454 Tbi Years

Post truck shows, events and gatherings here. 1990 SUBURBAN FACTS, SPECS AND STATISTICS. Naturally, the truck-based 454s were tuned for torque, so having nearly 500 pound-feet wasn’t a big. 1974--Full-time 4wd was now standard on all V8 models. The United States has a VIN code of 1 or 4, while countries such as Japan (J) are designated with letters. Should I expect a rebuild soon, or do these engines make 300,000? Looking for input from people that have experience, no 14 yr olds. Do this and you should get well into the 300hp range. 454 tbi specs 454 tbi specs. have done everything short of pulling the wiring harness and ECM, new sensors, fuel pump, tune-up, gaskets, pressure regulator, engine and body grounds, vaccum hoses. PowerAid 91-95 C/K 454 TBI. The one ton truck 454's have the peanut heads which make high torque but not a lot more horsepower than the standard truck 350. I just installed a 454 TBI long block in my Silverado. TBI 350 and 454 and currently have two 7. Guys, sorry I know there are some threads on this subject but nothing directly asking what a 1996-1997 454 XLI fuel pressure should be with the Pierburg pump 7. It works fine. 355 TBI/WC T-5/ 9 Bolt 3. '96-'99 with the Vortec 350s are the ones with the intake gasket issues, but it's not something you have to replace every couple of years once it goes. you need diffrent heads, diffrent cam, a quadrajet would bolt right on and that is your best bet for induction. The 454 wielded massive horsepower and torque for two years before General Motors detuned its engines beginning in 1972 to accommodate stricter federal emissions and safety standards. 00 Chevy 383 / 350 HP 4 Bolt Performance TBI Balanced Crate Engine Truck Camaro $ 3,395. Would suggest, given it needs to be more specific, a fuel pressure regulator to ensure the proper pressure is maintained. 3L TBI - Idle troubles. TBI Injectors If you have any other injectors numbers add them to the list. The bank quickly developed into an organization with an asset base of USD 19. they switched in 95. Sterndrive Models (LH rotation), 4 bolt mains. 3 engines all years used but run strong starting at $500 Rebuilt engines all Chevrolet sizes and machined blocks heads etc ready to go. How to articles are usually in the form of step-by-step instructions on how to accomplish a specific task on a GMC Sierra or Chevy Silverado. The recipe was simple: take a regular production car, offer it with the best suspension and most powerful engine you can cram into it, then sell lots of them to the younger generation. Dinunzio was a founding member of 454 Big Block, previously playing with Wrecking Crew. SRP pro series are light weight and come with a hardened ringset ( sealed power T-N-T's i think ) that is my suggestion. When the car heats up and I accelerate, I get. 4208730-5520114. but by the time you do all that, it still isn't. 7l tbi perfectly. These are the easiest to use. Posted By: wolfe10 on 09/30/13 07:07am As Dave points out, with a 1996 coach you could have either the very last of the "old" 454 or one of the first Vortec 454's. 7l engine it has. The fuel pump is attached to the fuel gauge sender assembly. 1989 was the first year that TBI was available in the BBC. TBI: Former finance employee arrested, charged with stealing around $51,000 from customers Serena Swindle, 41, resigned from her job at the finance firm after she was accused of stealing. The number and rate of TBI-related hospitalizations also increased among persons aged ≥75 years (from 356. the only mod I have done so far is a tbi spacer. the 350 tb is only good for 350 cfm i believe, and the 454 throttle body is good for 500+cfm. The parts we selected from Edelbrock, K&N, March Performance, and Jet Performance Products installed in a. hello everyone, i have a 1975 c10 suburban 2wd with a 454 and th400 auto tranny all stock, i plan on taking out the motor and putting a more fuel efficient EFI 350 in it and taking the 454 and putting it in a 74 Volkswagen bug and making it a street beast or running it at baja not sure yet. 3TBI is 96+ vortec heads, Edelbrock 2114 Intake with a carb to TBI adapter, 454 TBI housing with larger 2" bores and start with your stock injector pod with 5. The later model 454 use a Vortec casting that is supposed to be better than the old peanut ports. 3L is better, making 45hp more than the 150hp TBI 4. 4L Chevy, GMC (454), # 5235231 - $149. (This part are oem not aftermarket one). Thinking about replacing the pontiac 455 in my trans am with a fuel injected motor and was wondering about the power potential of these motors. Due to the fuel crisis in 1973, the massive 454 was primarily offered in heavy-duty General Motors trucks from 1974 to 1996. 1989 Winnebago Prices, Values and Specs Select a 1989 Winnebago Series. The General Motors' power train division changed and improved this engine over the years, and their primary influence over the Vortec name started in 1996. Cerebral autoregulatory dysfunction after traumatic brain injury (TBI) is strongly linked to poor global outcome in patients at 6 months after injury. 1974--Full-time 4wd was now standard on all V8 models. Edelbrock 3764 - Edelbrock Performer 454 TBI Intake Manifolds Compare Intake Manifold, Performer TBI, Aluminum, Natural, Throttle Body, Chevy, GMC, 454, Each. (TBI) (Gen. 2L (I4) all the way up to 8. com bore it to match a 54mm bored 454 TBI unit which he will bore out for me as well for this project. Note: For the IAC pins C5 and C6 are reversed on the 454 vs the SBC so swap those 2 pins if using a 454 TB with the bolt on IAC. Chevy 454 7. The injectors are different sizes. The Vortec 4. CASTING DATE. It needs almost all new TBI parts. Just food for thought. I've seen the. Yes just like the title says i wanna get rid of the tbi on my gmc and convert to a carb with an hei. Just needs a little more "cam" to. Find CHEVROLET 7. you bought the wrong truck for what you want. As with the Inboard models throughout the 1980's the 7. In Europe, the annual incidence rate of hospitalized and fatal TBI is about 235 per 100,000 person years. Not only that but all the parts used in our Fuel Injection System Kit from Performance Fuel Injection Systems are off the shelf parts available at any. Now it has 33's and i will prob put on a narrower 35 in tire. I have swapped TPI and TBI engines for a few years. not a high rpm engine, which is why hp numbers are low. The other that was a small-block unit based on the thick-web 350 that was. The 454 uses the larger 81# injectors. Kinda hoping that someone in the Bangshift world has some experience with these. 4 Engines 1985-91 (w/o the 4L60-E or 4L80-E transmissions): Our harness upgrades to the 1988-90 CK truck computer. Also had the 4l80E. Read on for further details along with more tech questions and. [SOLVED] 95 Chevy S-10 4. 7L LS6 2001-2204 and vin code E 7. ThrottleBodyInjection. what was the last year that chevrolet installed carburetors on the 454 454 was 1986. Online Repair Service Manual for your GMC Truck V8-454 7. FILTER RESULTS. Yes just like the title says i wanna get rid of the tbi on my gmc and convert to a carb with an hei. There was 4 or 5 different ones used through the years not counting marine and medium duty truck units. You can use a late 80's or early 90's GM TBI definition. VehicleSpecific Products. It has run open loop for years to putter and plow the driveway on an estate. 7l engine if you are looking for regular cab muscle truck you found it. VI) GM 454 V-8 1996. Pace Performance Products in Ohio put together a decent upgrade. the 350 tb is only good for 350 cfm i believe, and the 454 throttle body is good for 500+cfm. 350 tbi 4x4 Sunurban engine. Dim: UN 3/8 X 16. have done everything short of pulling the wiring harness and ECM, new sensors, fuel pump, tune-up, gaskets, pressure regulator, engine and body grounds, vaccum hoses. The Chevrolet Big Block V8 Engine The Chevrolet Big Block V8 In its most familiar and long-running format, the Chevrolet Big Block was Introduced in 1965 as a 396 CID powerplant and from that time forth, it has earned its own place in automotive history as one of the most well known tour-de-brute-force engines on the market. It runs good, no smoke but has 190,000 miles. See also Chevrolet Blazer (disambiguation). 7 TBI from a '93) going. This is one of the first electronically-shifted transmission applications. 4LX EFI UJ 1996-1997, start Gen VI, GM TBI intake. El sistema TBI - Free download as Word Doc (. Larry's Chevelle is looking and running better than ever with his newly-installed Holley Sniper Stealth 4150 EFI System. Engines covered: Pre-Optispark small block Chevy V8s with TPI or TBI injection and HEI ignition with electronic spark timing (seven or eight pin HEI module) Much of this article will apply to other 1980s era GM cars including injected big blocks and even fire V6s. 454 light truck 454 1968-1990: 496 truck upgrade for tired 454's Available in MK4, Gen 5 and 6 as depicted: 454 turnkeys are also available with TBI and Multiport Injection: 540 in progress: How many 540's did you really want? 454 w' rectangular port heads: Big block marine engines are on the marine page Vroom, vroom. The Sniper uses four 100-lb/hr injectors and will feed up to a 650hp naturally aspirated engine. SRP pro series are light weight and come with a hardened ringset ( sealed power T-N-T's i think ) that is my suggestion. INTAKE MANIFOLD – If you are installing this TBI on a production TBI 2. 8 2011 Dodge Ram 1500, 5. ( = information not available) - [ Return to Engine Codes Index]. 0 was 300hp/360tq. 4l Chevy Gmc 454 5235231. Or say the opposite zero degrees. The later model 454 use a Vortec casting that is supposed to be better than the old peanut ports. Post-Traumatic Brain Injury Syndrome, also known as PTBIS, is a set of symptoms that a person may experience for weeks, months, years or life after a traumatic brain injury (TBI). I interested in exploring tbi options as I didn't realize tbi could be had for less than $2000. 7L - 350ci - 8cyl:. The United States has a VIN code of 1 or 4, while countries such as Japan (J) are designated with letters. This is a motorhome. I backed it off after 15 mins and it ran pretty rough (didn't want to stay running). Rough running. 8 TBI manifold with a 4. A larger TBI throttle body unit with a better intake would wake that beast up a bit. I think the main issue with the 2. V) D805069-F304999 1992-94 454 Mag. Each TBI has a complete one year warranty. The Chevrolet Big Block V8 Engine The Chevrolet Big Block V8 In its most familiar and long-running format, the Chevrolet Big Block was Introduced in 1965 as a 396 CID powerplant and from that time forth, it has earned its own place in automotive history as one of the most well known tour-de-brute-force engines on the market. Not a ton of horsepower (probably less than 300) but has more than enough torque to get the tires spinning in low gear at 20-30 mph. Go to Dynamicefi. Will it make more horsepower than their recent Ford budget build? The dyno will reveal the answer. Auto Math: Classifieds: Forum. This is one of the first electronically-shifted transmission applications. Has 210k miles but wouldn't trade it for anything. 0 intact ran good has no issues pulled from 2001 SILVERADO $1000 totally complete. 93 chev 3500, 454 TBI, 2-whl, 5-speed. 37' might be a little too much for the 454. 1992 Chevrolet "SS 454" Short-Bed 2-Door 1500 Pickup, Limited Production -and- Investment Quality! Professional Built Original 7. Introduced for the 1960 model year, the C/K series was marketed. In persons aged 65 and older, TBI is responsible for more than 80,000 emergency department visits each year; three-quarters of these visits result in hospitalization as a result of the injury. Engine Serial Number: The serial number tag is located near the starter, by the flywheel housing; or, on the rocker arm or flame arrestor cover. The 454 test motor was equipped with an HEI distributor and 8-mm plug wires from Speed Master, though a stock HEI will work just as well. 4L/454 Engine Rebuild Kits and get Free Shipping on Orders Over $99 at Summit Racing!. In 1987, they went to (TBI) throttle body year that chevrolet installed. I'm interested in two options, and would appreciate any guidance. The purpose of this technology is to ensure that the fuel/air mixture is even. 050" If the engine is changed alot from stock then please post compression, cam, power adder, etc and I can give you a better setting for that combo. The first generation of Chevy big block engines was introduced in 1958, with the 2nd generation being introduced for production vehicles in beginning in 1965. It will run off of starting fluid if I spray it in the TBI but then quit after I stop. S10 Dually Conversion Kit. INTAKE MANIFOLD – If you are installing this TBI on a production TBI 2. The best it would do for fuel mileage was 9mpg. 8l 0 tbi300 17078272, 17079255, 17082061, 066; 17084061, 500-2000 066; 17085061, 17086108, 17110362, 17110759 1990-87 2. To create the pickup Chevrolet plucked its big-block V-8 from the heavy-duty-truck line and stuffed it into a short-box C1500 Sportside pickup. 4L Compatible With GMC CHEVY C/K Pickup Truck Van Camaro 305 350 454 HEI652R Red Cap 4. 5 comp/oval port heads/. They added a custom made huge radiator, ran the stock clutch fan with aux e fan pusher. Kinda hoping that someone in the Bangshift world has some experience with these. TBI recorded an annual profit of USD 454 million during 2016. VehicleSpecific Products. In the United States, at least 1. The problem I have is that the picture in the manual showing the lower tab shows it on the LH side at 7 o'clock (and the verbiage references the LH side of damper) It then goes on to say use plugs 5 or 8 when using that tab. 7L - 350ci - 8cyl:. V) F305000-F801699 1995-96. Specify carbureted or fuel injected and if detonation sensor hole is used For more power, call about 496 strokers, 502 and 540 CID motorhome upgrade engines DCKM2 $2,390. Find CHEVROLET 7. Chevrolet C 2500 Suburban 2wd Workshop Manual (V8-350 5. 1,055,273 units were produced surpassing the 1972 Ford sales record. 7 -A new pump is in order to be replaced. There are about 4 different 454 TBI units to my knowledge. Multiple effective interventions have been identified, and CDC has developed the STEADI initiative (Stopping Elderly Accidents Deaths and Injuries) as a comp …. Engine started running rough, took to local dealer. Short but pretty. I have a 454 TBI alsothe first and easiest thing to do is advance the timing maybe 4*. Around 93 they changed the IAC from the screw in to the one that bolts on with 2 screws, and 94-95 was the high pressure unit with small injectors. It has about 150,000 miles on it, ran great but donor had a bad clutch and rust. It's Chevy's turn as Mike and Joe build a classic 454 big block engine on a skimpy budget of 25-hundred dollars. A while back I had a backfire and then loss of power. im in central ky. You can buy a TBI to 4bbl adapter plate. Other than the Factory discontinued Perf Plus 454SS "Hot" cam GM Part 12361316 Below seems to be recommended cam for a stock 454 TBI to make it pull as good as it can without extensive mods to the fuel pressure (upgraded in-tank pump and adjustable regulator and compression and head changes and lots of custom programming:. I have a 454 TBI alsothe first and easiest thing to do is advance the timing maybe 4*. (TBI) this was a proven great system for years and there were and still are thousands of these vehicles out there. The '92 454 is a plug and play option for me. I had been driving it periodically around town for a few weeks when one day I went to move it from the side if the house to the driveway. Our's flows 720cfm. Otherwise stock 454, mild cam, headers, edelbrock dual plane intake, and the stock fuel pump is maxed out (no more than 14PSI) on a truck I work on. Post-Traumatic Brain Injury Syndrome, also known as PTBIS, is a set of symptoms that a person may experience for weeks, months, years or life after a traumatic brain injury (TBI). TBI 454 255hp @ 4000rpm 405 lb/ft torque @ 2400 rpm 454SS(91-93) and 94-95 3/4 and 1 ton trucks used 90 lb/hr injectors at 28-32 psi (high pressure system) Vortec L29 454 290 hp 410 lb/ft torque The Vortec 454 uses 8 24 lb/hr fuel injectors that are sequentially fired. How to articles are usually in the form of step-by-step instructions on how to accomplish a specific task on a GMC Sierra or Chevy Silverado. recommended 454 I have made some changes to this page after learning a lot the hard way of course with my 1991 454SS project truck. Complete TBI Conversion Kit for Stock Big Block Chevy 454 7. Its going in my. If that is indeed the case, don't worry. The problem I have is that the picture in the manual showing the lower tab shows it on the LH side at 7 o'clock (and the verbiage references the LH side of damper) It then goes on to say use plugs 5 or 8 when using that tab. Both engines can benefit a LOT from higher flow cylinder heads and cams. The restraint type is specified as character seven of the American GM VIN for passenger cars. 6916779 and up. The 454 wielded massive horsepower and torque for two years before General Motors detuned its engines beginning in 1972 to accommodate stricter federal emissions and safety standards. They added a custom made huge radiator, ran the stock clutch fan with aux e fan pusher. 3L is better, making 45hp more than the 150hp TBI 4. 4 liter engine is commonly known as the "454 Big Block". Holley carburetors powered every Monster Energy NASCAR® Cup team and nearly every NHRA® Pro–Stock champion for four decades. AB = Air Brakes, AR = Air Injector Reactor, CA = California, HD = Heavy Duty, hdc = heavy duty clutch, HP = High Performance, LP = Liquid Propane Gas, PG = Powerglide, mt = manual trans, mt-3, 3 speed manual, SHP = Special High Performance, TH = Turbo Hydramatic, ti = transistor ignition. TBI 454 255hp @ 4000rpm 405 lb/ft torque @ 2400 rpm 454SS(91-93) and 94-95 3/4 and 1 ton trucks used 90 lb/hr injectors at 28-32 psi (high pressure system) Vortec L29 454 290 hp 410 lb/ft torque The Vortec 454 uses 8 24 lb/hr fuel injectors that are sequentially fired. Most people tell you not to do this. The original 1970 LS5 version of the big-block Chevrolet 454 engine produced 390 horsepower that drove the Chevrolet Corvette. TBI: Former finance employee arrested, charged with stealing around $51,000 from customers Serena Swindle, 41, resigned from her job at the finance firm after she was accused of stealing. 87-90, 91-92, 93, then 94-95. Two versions of the optional 454 were available in 1-ton Chevy trucks. Plus, a trip to the annual NHRA Hot Rod Reunion in Bowling Green, KY. I just got back from my first RV camping trip, loved it. engine, or from pre TBI cars such as the 307 Olds engine. 4L/454 Cylinder Heads with Cast iron Cylinder Head Material and get Free Shipping on Orders Over $99 at Summit Racing!. 1987 Chevrolet R-30 crew cab dually in good used shap, please read the paragraph below or give me a call at 517-320-342, I bought this truck back in 2003 and it was an 'A' title at that time which means 1 owne, but it had been wrecke, they jack knifed a 5th wheel while hauling their drag ca, so we / I've done. The 38's and 4. 4 L (454 cu in) V8 was a truck version of the Chevrolet Big-Block engine. 7l tbi perfectly. 1l xxxxxxx - color / color - 45pph - 4. for a GM TBI application to read the data, or to check for stored codes. The Vortec 7400 L29 7. It has about 150,000 miles on it, ran great but donor had a bad clutch and rust. Annually 14. 4 454 Short Block 1991-1995 4-Bolt TBI. 350 tbi 4x4 Sunurban engine. Introduced in 1996, it was produced for five years, until replaced by the Vortec 8100. what was the last year that chevrolet installed carburetors on the 454 454 was 1986. I need to replace motor in my currently tbi 350 1990 chevy truck. what other mods(not internal) would give me a bit more power to move this beast. On my SOB, a '91 Rockwood 28' I had the 454 with factory fuel injection. Compare The Facts. Ok guys, this isn't my first rodeo, and I'm truly stumped here. However, during the 1986 model year, AC spark plug changed the center electrodes in there plugs to copper. 4L engines had 30psi regulators and smaller injectors. The LE8 454 was the most common from 1973 to 1991. 8 2011 Dodge Ram 1500, 5. My Engine Turns Over OK But It Won't Start If your engine won't crank or turn over, go HERE. Whereas motor-vehicle crashes were the leading cause of TBI-related deaths in 2007 in both number and rate, in 2013, intentional self-harm was the leading cause in number and rate. 4L - $1,049. ThrottleBodyInjection. In the first year of operation TBI was associated with a consortium of international banks led by JPMorgan Chase. But it appears my current intake will work with these 2 item. Read on as Jeff Smith help a reader resolve an issue with his 1989 Chevy K2500 engine concerning the installation of TBI heads. It is recommended a TBI from about the same size engine to be used in your conversion or larger for high performance built engines. This thread is archived. 4 L (454 cu in) V8 was a truck version of the Chevrolet Big-Block engine. if both ecms/harnesses just controled the engines/transmission, i might consider it. air conditioning compressor brackets for all years and models Eckler's Corvette understands that quality air conditioning brackets are not just key for proper performance, but also for that perfect engine compartment look. we just scored these from cnc recycling for some upcoming horsepower builds. In 1970, GMC introduced its own model of the truck, called the. Looking at Throttle cables. It had TBI but now has a quadrajet. Also had the 4l80E. and 14 years and accounts for 35% of all TBI. Jan 27, 2014 #10. Two versions of the optional 454 were available in 1-ton Chevy trucks. truck has very low original miles and runs and drives great. I had been driving it periodically around town for a few weeks when one day I went to move it from the side if the house to the driveway. The increase in the number of fall-related TBIs in older adults suggests an urgent need to enhance fall-prevention efforts in that population. Do this and you should get well into the 300hp range. This regulator features a steel insert on the adjuster to prevent stripping and is easy to install. I also have a tbi adapter plate i would like to get rid of. One tan and one black. in 2007 and 2013, by age, per 100,000 population. It is machined out of billet aluminum which ensures extreme durability. Universal Products. have done everything short of pulling the wiring harness and ECM, new sensors, fuel pump, tune-up, gaskets, pressure regulator, engine and body grounds, vaccum hoses. Only problem is that 454's from those years are usually. To some, the Chevrolet 454 big block was the right engine at the wrong time. TBI survivors almost all experience some level of. The Gen-V 454 was run on the engine dyno with a set of 2. The first generation of Chevy big block engines was introduced in 1958, with the 2nd generation being introduced for production vehicles in beginning in 1965. I have had a fuel pressure regulator spring break in my TBI housing and this is not in the Crusader parts book. One tan and one black. in my oppinion, tbi is the better system. On my 94 when you pop the hood it is obviously a TBI, but, the original window sticker says 5. There's information showing the largest GM TBI comes off the 454 engines prior to 1994, so 1993 or older is suppose to have dual 2" butterflies rated at 645 cfm. TBI can be caused by a number of principal mechanisms, including motor-vehicle crashes, falls, and assaults. I have a 93 c3500 cclb with a350 tbi that we bought about 18 years ago. VEHICLE FITMENT. 73 locking rearend 109xxx miles I put better, rebuilt heads, on it last year Edelbrock 454 TBI aluminum intake, port matched to heads Installed Comp cam, and lifters Rebuilt the TBI unit, with new injectors New cap, rotor, wires, plugs, and an MSD coil 2" steel cowl hood. com bore it to match a 54mm bored 454 TBI unit which he will bore out for me as well for this project. This MABBCO® Remanufactured Short Block is for a GM Chevy 7. com as they have a setup to convert the stock TBi ecm to a flash memory and have tuning software. tbi fuel injectors buick 4 cylinder 1986-82 1. Each TBI has a complete one year warranty. 350 TBI engine totally intact 4 bolt runs great $800 LS 6. 7L 350" 8 Cyl, 1992-1994 Chevrolet Caprice …The Edelbrock Power Package Top End kits feature the best combination of dyno-proven components at an affordable cost!. The multi-port design is so superior that, in 2017, Edelbrock discontinued production of their E-Street TBI kits in order to fully concentrate on the continued development of its Pro-Flo multi-port EFI product line. The Marine Mechanic I'm going to connect you with knows all the tricks and shortcuts. 1990 Chevrolet 454 SS pickup truck Turbo 400 trans, 3. Re: 454 Chevy temp sensor 01/18/2016 12:50 AM In the first design of the 366-427 engine, all coolant monitoring was done by water temperature sensors installed in the intake manifold in the short water runners between the thermostat housing, and the front of the cylinder head. 4l tbi P30 chassis (mileage: 106,439). How many hours should a freshwater only Crusader 454 inboard last if it is properly maintained? Iv herd of them lasting 3000 plus hrs In some cases,and iv also herd that anything over 1500hrs. I put a Noid light on and there was no pulse. This kit incorporates a harness designed specific for placing the ECM under the seat or in the center console as the Wagoneers are very crowded for room under dash. chevy forum at Car Dealer Forums; Truck runs great, but recently when the engine comes off the enriching circuit. The General Motors' power train division changed and improved this engine over the years, and their primary influence over the Vortec name started in 1996. mine has a quadrajet carb(1986, last year for carb, and i love it). Throttle Body Injection (TBI) for a pre-TBI 350 Why: After running my '65 Chevy pickup for a couple of years with the stock '83 drive train (350/700R4), I got tired of the constant battle I was having with the Quadra Jet. Answered 9 years ago. 3TBI is 96+ vortec heads, Edelbrock 2114 Intake with a carb to TBI adapter, 454 TBI housing with larger 2" bores and start with your stock injector pod with 5. 045" MSD box. There was 4 or 5 different ones used through the years not counting marine and medium duty truck units. GM introduced its Vortec line of engines in the mid-1990s, in I4, I5, I6, V6 and three V8 configurations in various displacements from 2. I wanted to show that you can put a carb on a tbi motor. Many critically ill patients with a traumatic brain injury (TBI) are unable to communicate. it broke down on my daughter so I picked it up and replaced the fuel filter and some bad injector pigtails that needed to be replaced. not a high rpm engine, which is why hp numbers are low. The Mark IV is found on 7. 1992 Chevrolet "SS 454" Short-Bed 2-Door 1500 Pickup, Limited Production -and- Investment Quality! Professional Built Original 7. SET OF TWO FACTORY REMAN TBI Injectors 1987-93, 7. Go to Dynamicefi. As with other manufacturers during the muscle car era, General Motors was pushing for more raw power. The purpose of this technology is to ensure that the fuel/air mixture is even. 20 Briefly, eligible patients included all mechanically ventilated moderately or severely brain-injured patients, ≥16 years of age, who were admitted to UCLA Medical Center within 24 h of injury. So would a nice flowmaster added to it. T8-160A Common Numbers 17087021 17089092 17087257 17089093. Just would like some input on if I'm on. Free shipping on 3 Year. I have an engine Mercruiser ID #, "OD 517074" big block 454,that is supposed to be a 1991 model. Online Repair Service Manual for your GMC Truck V8-454 7. The bank quickly developed into an organization with an asset base of USD 19. 7 TBI's are all the same CFM with 1 11/16th bores. In the United States, at least 1. 4 L (454 cu in) V8 was a truck version of the Chevrolet Big-Block engine. He quit while the band was touring for the second album. Please list your TBI number to ensure you receive the exact TBI. my dads 92 chevy truck is tbi. 6 Master Engine Rebuild Kit 1957, 1958, 1959, 1960. Do this and you should get well into the 300hp range. 4L-454ci-V8 Engine Torque Specs. 2L (I4) all the way up to 8. 8l 0 tbi300 17078272, 17079255, 17082061, 066; 17084061, 500-2000 066; 17085061, 17086108, 17110362, 17110759 1990-87 2. OEM TBI Fuel Injectors Set (2) 5235206 for 1987-1996 GMC Chevy 5. I've had two other 454s and they both responded well to a little more advance in the timing. Serving our valued customers for over 30 years. The Chevrolet 454 engine was a part of the 2nd generation of Chevrolet big block engines. In 1970, GMC introduced its own model of the truck, called the. Woodgrain trim panel on tailgate of top trim levels. 5:1 the wider LSA on most TBI engines is to allow the sensors to detect less overlap at low rpms which tends to cause errors in the data due to reversion pulses in the intake runners, adding displacement and longer stroke tends to reduce that effect some anyway, and increase the low rpm tq Big block Chevy 454 with 550 Hp performance aluminum. The LS5 engine remained available in cars until 1976, while the LS6 was phased out after only 1 year. INTAKE MANIFOLD – If you are installing this TBI on a production TBI 2. 4 million TBI occur annually—1. In the '70 Monte Carlo SS454 I had I found in my work notes of her running good using Autolite #25 plugs running. 93 chev 3500, 454 TBI, 2-whl, 5-speed. 2 years ago. El sistema TBI - Free download as Word Doc (. ThrottleBodyInjection. It would pull just fine until I floored it and then it seemed to loose power. 4l vin n tbi ALLDATA gives you all available troubleshooting solutions, updated four times a year to meet changing factory service and repair information. Dim: UN 3/8 X 16. Some symptoms may manifest a substantial period of time (months or years) after TBI. Add our Performer High-Compression heads #60499 for even greater power gains. 99 Add to cart; 454 IAC Adapter Cable, Square to Flat connector, Throttle Body Injection TBI/TPI $ 14. The fuel pump is attached to the fuel gauge sender assembly. Set Of Two Factory Reman Tbi Injectors 1987-93 7. All applications are truck engines. this efi system can be operated with computer controlled spark advance using the late model gm v-8 distributor, or it can be. 250hp from a 7. com Alright, I have an '88 crew cab with a tbi 454. This may work for other years and vans as well. The problem I have is that the picture in the manual showing the lower tab shows it on the LH side at 7 o'clock (and the verbiage references the LH side of damper) It then goes on to say use plugs 5 or 8 when using that tab. 93 chev 3500, 454 TBI, 2-whl, 5-speed. 4L V8 is just laughable. But if you make some changes to the exhaust/efi/cam you can get that up to where it should be (350-400) and get the exact same fuel milage. Do this and you should get well into the 300hp range. (This part are oem not aftermarket one). Re: TBI 454 tear apart and redo. My son's has a. 3l engine NOTE: Some came with 2 differant size injectors? 5235279 - White / Green - 54pph - 5. What is the typical life expectancy of a typical Crusader 454 XL engine? Mine has 950 hours and are 16 years old. In persons aged 65 and older, TBI is responsible for more than 80,000 emergency department visits each year; three-quarters of these visits result in hospitalization as a result of the injury. 14 bolt rear 4. 4L - $1,049. 4l tbi P30 chassis (mileage: 106,439). Introduced in 1996, it was produced for five years, until replaced by the Vortec 8100. the truck has 72,000 miles on it. Chevy Truck Forum. Surveys from two states suggest that 20-25% of adults have experienced at least one TBI with loss of consciousness sometime in their life. My '91 454SS with 4L80E, 4:10 & TBI got just under 14mpg on a 1K trip through the mountains (March 3). Have always been able to find an ECU to fit the needs of the project. It seems we have to do more on the 454's as far as gaskets are concerned, but the 350's are more likely to throw a rod or have a piston burn up or we have to replace the camshaft. they switched in 95. April 11, 2017 Eugene Stugart Off Auto Repair Questions, GMC, My 1992 GMC 3500 started developing a skip under load. The multi-port design is so superior that, in 2017, Edelbrock discontinued production of their E-Street TBI kits in order to fully concentrate on the continued development of its Pro-Flo multi-port EFI product line. It was not the ideal time to introduce a large cubic. 4LX Bravo (TBI)(Gen. It needs almost all new TBI parts. 4 barrel tbi installation page 1 350, and 454 v-8 engines. On my SOB, a '91 Rockwood 28' I had the 454 with factory fuel injection. raumatic brain injury (TBI) is an important public health concern in the United States. It failed to start one day and I noted there was no fuel coming from the TBI injectors. TBI 454 255hp @ 4000rpm 405 lb/ft torque @ 2400 rpm 454SS(91-93) and 94-95 3/4 and 1 ton trucks used 90 lb/hr injectors at 28-32 psi (high pressure system) Vortec L29 454 290 hp 410 lb/ft torque The Vortec 454 uses 8 24 lb/hr fuel injectors that are sequentially fired. With better heads, intake and a 4-port TBI system the stock 454's can make @450HP pretty easy with a mild cam. 3l engine NOTE: Some came with 2 differant size injectors? 5235279 - White / Green - 54pph - 5. 7L SFI LT1 1995 1,2F. ENGINE CODE POCKET GUIDE 1955-1991 454 1970-Date Big Block. Each TBI has a complete one year warranty. I checked the fuel pressure at the TBI and it is 10 psi which is withing specs. I'll have to look more to see what else I used. ECU Swap On 1991 TBI 454 / 4L80E. You can use a late 80's or early 90's GM TBI definition. 3L TBI - Idle troubles within the Automotive Support forums, part of the Tech Support Forum category. The Chevrolet Performance Vortec TBI Intake Manifold is designed to deliver maximum horsepower and efficiency with throttle body fuel injection and EGR usage on small-block Chevy engines. Variants The 1970 debut of the 454 was Chevrolet's effort to raise the bar in muscle car performance. Tbi Fm #120, Denison, TX 75021 is a lot/land. She was 27 years old. With the complete Edelbrock Total Power Package 0-60 times improved by 1. 7L engines from 1996-2002 have been found to be very sensitive to fuel deposits in the fuel injectors. -6AN Adapters for TBI Throttle Body Fuel fittings – Black Anodized $ 20. I'm thinking of doing the same thing, new 350 in my 91 Sierra 4x4, considering it has 151,000 plus miles on it, mostly hi-way. what was the last year that chevrolet installed carburetors on the 454 The last carbureted 454 was 1986. HARMONIC BALANCER. 1987 Chevrolet R-30 crew cab dually in good used shap, please read the paragraph below or give me a call at 517-320-342, I bought this truck back in 2003 and it was an 'A' title at that time which means 1 owne, but it had been wrecke, they jack knifed a 5th wheel while hauling their drag ca, so we / I've done some work to it. I'm curious as to the technical effects that this has on the engine as I'm not a engine builder. 97 Chevrolet c3500 454 V8 7. Annually 14. 4L 4 Answers. GM 1992-93 Camaro 5. 454 carb to TBI conversion start 3 Perry Fager. An near stock 305 TBI with 1 5/8" x 3" headers, 2 1/2" duals with X-pipe, 5,200 RPM Governor in the 700r4, 1. While most commonly associated with pickup trucks, the model line also included medium-duty and heavy trucks. No point in checking the timing unless that is unplugged. 7% withdrew/refused/unknown for 1 in 4, the known. I have a 89 chevy silverado with a 454 and a TBI. The TBI unit used for the project is simply a salvage-yard part scavenged from any of the millions of GM trucks built from the mid-1980s through the mid-1990s, including the 4. 7l tbi perfectly. 4L XW 1996-1997, 6WX, start Gen VI, GM 4-bbl intake. RV's often have an older engine model year than the coach year, as the chassis can sit on the manufacturer's lot for a very long time. Each TBI comes complete with injectors, TPS, air control valve, and throttle body bushings. 7L MFI LT1 1992 IY CAR 5. No code on this page verified by a second source. 402, 427, 454, 109cc chamber, Large or small hex spark plugs used, crate motor usage in years after. Oct 02 2015, 8:20pm. 6170297-6916778. Jan 27, 2014 #10. Currently I'm pushing about 325HP with many bolt-on accessories and a new 4L60e transmission. Cerebral autoregulatory dysfunction after traumatic brain injury (TBI) is strongly linked to poor global outcome in patients at 6 months after injury. Howell Fuel Injection Conversion TBI Kit Offroad 1981-1986 Jeep CJ5, CJ7, CJ8 w/258 6-CYL 4. 350 tbi 4x4 Sunurban engine. INTAKE MANIFOLD – If you are installing this TBI on a production TBI 2. It is claimed that coil near plug is worth power and mileage compared to a distributor. I'm curious as to the technical effects that this has on the engine as I'm not a engine builder. More power for 454 tbi - Off-Road Forums & Discussion Groups. I have swapped TPI and TBI engines for a few years. As with other manufacturers during the muscle car era, General Motors was pushing for more raw power. boofighter 724,577 views. Answered 9 years ago. Cerebral autoregulatory dysfunction after traumatic brain injury (TBI) is strongly linked to poor global outcome in patients at 6 months after injury. She has 5 years experience as a psychotherapist providing individual, group and marital counseling and 12 years experience as a vocational rehabilitation counselor providing vocational counseling, job seeking skills training, case management and expert testimony. A new four-quart oil pan (PN 12495360) for GEN V and GEN VI big-block Chevrolet V-8s has a smaller sump than the six-quart truck pan installed on H. It is far better "ported" to a 4 barrel intake than the plate style adapters and can likely be had for the same price. Other than the Factory discontinued Perf Plus 454SS "Hot" cam GM Part 12361316 Below seems to be recommended cam for a stock 454 TBI to make it pull as good as it can without extensive mods to the fuel pressure (upgraded in-tank pump and adjustable regulator and compression and head changes and lots of custom programming:. for a GM TBI application to read the data, or to check for stored codes. 4L TBI engines. 4% known outcome – 10. com bore it to match a 54mm bored 454 TBI unit which he will bore out for me as well for this project. My '91 454SS with 4L80E, 4:10 & TBI got just under 14mpg on a 1K trip through the mountains (March 3). In the first year of operation TBI was associated with a consortium of international banks led by JPMorgan Chase. 366 - 454 Codes: TBG - YZ Legend: A. The multi-port design is so superior that, in 2017, Edelbrock discontinued production of their E-Street TBI kits in order to fully concentrate on the continued development of its Pro-Flo multi-port EFI product line. If you have access to a scan tool use a hook up for a 1990 350 cu. 87-89 454 TBI trucks had a heated adapter to bolt a throttle body to a quadrajet style intake. 4L 454 cid Marine Engine •Gen VI with 1pc. If you own a 3rd generation F-body, you’re familiar with the 305. Patients were admitted to the study and medically treated as has been described previously. Vortec is a trademarked name for a line of small block engines for General Motors trucks. Re: timing ignition 454 tbi 1995 « Reply #10 on: January 26, 2016, 01:27 PM » Hi guys, this is the wire to disconnect, the plug wire is the number 5, thank you very much from Italy. Guaranteed Carburetors (GC) expressly warrants for 2 years that all rebuilt carburetors and throttle body injectors (TBI's) will be free from defects in material and workmanship. Posted By: wolfe10 on 09/30/13 07:07am As Dave points out, with a 1996 coach you could have either the very last of the "old" 454 or one of the first Vortec 454's. To create the pickup Chevrolet plucked its big-block V-8 from the heavy-duty-truck line and stuffed it into a short-box C1500 Sportside pickup. I've got a 454 from an '89 Chevy SS pickup truck. CASTING DATE. In ANY event, it still is a bad ass mofo of a truck, and I would be proud to have one, regardless of year. Designed for 1987-95 TBI-equipped big-blocks, these new 50-state emissions legal (E. Excess fuel is returned to the fuel tank through the fuel return line. American restraint types []. I interested in exploring tbi options as I didn't realize tbi could be had for less than $2000. Find great deals on eBay for 7. The LS6 version produced in the same year and installed in the Chevelle was rated at 450 horsepower. I'm fairly certain that the TBI unit on my '95 454 needs rebuilding. Surveys from two states suggest that 20-25% of adults have experienced at least one TBI with loss of consciousness sometime in their life. In this engine, power reached 460 HP / 490 ft. LT1) using TunerCATS. chevy tbi throttle body 454 To Carb Adapter over 35 years. That’s one of the most fun parts as it’s usually accompanied with a bit of bench racing and dreams of how the project will perform in the end (be it a boat, hot rod, pickup or bar stool. 425 HP, 500 ft/lbs TQ This big block 454 HO is an awesome value, ready for an easy transplant into your classic muscle car or street rod! It is a Gen VI-based block with a conventional-style mechanical fuel pump boss, and it sounds much like the performance big blocks of the 1960s. AB = Air Brakes, AR = Air Injector Reactor, CA = California, HD = Heavy Duty, hdc = heavy duty clutch, HP = High Performance, LP = Liquid Propane Gas, PG = Powerglide, mt = manual trans, mt-3, 3 speed manual, SHP = Special High Performance, TH = Turbo Hydramatic, ti = transistor ignition. this efi system can be operated with computer controlled spark advance using the late model gm v-8 distributor, or it can be. Make an offer!. It is a variable resistor. GM 1994 Camaro - Impala SS - Corvette 5. I managed to. selling my fathers 1987 c20 silverado 454 tbi with a turbo 400 trans. Should I expect a rebuild soon, or do these engines make 300,000? Looking for input from people that have experience, no 14 yr olds. what other mods(not internal) would give me a bit more power for 454 tbi - Off-Road Forums & Discussion Groups. throws black smoke out the exhaust and smoke out of the dipstick looks white any answers. Only problem is that 454's from those years are usually. It would pull and pull and ran on pump gas. I have a 1987 chevy silverado 20 454 tbi with a turbo 400 with 72,000 original miles 7 Answers. I have had a fuel pressure regulator spring break in my TBI housing and this is not in the Crusader parts book. Other than the Factory discontinued Perf Plus 454SS "Hot" cam GM Part 12361316 Below seems to be recommended cam for a stock 454 TBI to make it pull as good as it can without extensive mods to the fuel pressure (upgraded in-tank pump and adjustable regulator and compression and head changes and lots of custom programming:. Around 93 they changed the IAC from the screw in to the one that bolts on with 2 screws, and 94-95 was the high pressure unit with small injectors. Please Read - Important Notes: 1) During ordering please enter the phone # that is easiest to reach you. In persons aged 65 and older, TBI is responsible for more than 80,000 emergency department visits each year; three-quarters of these visits result in hospitalization as a result of the injury. Up for sale is a used ROCHESTER THROTTLE BODY 7. Moderate-to-Severe Traumatic Brain Injury Requiring Inpatient Rehabilitation. No point in checking the timing unless that is unplugged. The test kit I purchased ($50) included a adapter near an inch and a half long and has a schrader port to connect to the gauge hose. Introduction. If it really bugs you, buying a 1981-1986 truck and retrofitting the still-plentiful TBI from a 1987+ Chev truck is not that difficult, and likely more easy than trying to find the one-year only standard cab TBI, if thats what you want. Re: Vortec 454: School me! I think the heads being referred to as peanut port are the ones used on the TBI engines. 1990 Chevrolet 454 SS pickup truck Turbo 400 trans, 3. 3L VIN T (2004)). As with other manufacturers during the muscle car era, General Motors was pushing for more raw power. I'm impressed. SET OF TWO FACTORY REMAN TBI Injectors 1987-93, 7. ABANDONED Cadillac DeVille will it. what was the last year that chevrolet installed carburetors on the 454: [email protected] 7's run a 3/8 supply and a 5/16 return. it broke down on my daughter so I picked it up and replaced the fuel filter and some b. 7l engine if you are looking for regular cab muscle truck you found it. probably start with the small inexpensive parts for now. I adjusted the IAC (which I shouldn't have) to get the engine up to 1500 rpm's for about 15 minutes. Shop with confidence. im building two and i dont know which one will have which motor ones going to be a 383 and the other the. No codes, cranked fine, plenty of fuel flow through the TBI. Edelbrock 3764 TBI intake as I don’t like the HEAVY iron mess GM installed that holds too much heat and I am having Vic at rvmorsemachine. Fuel is pumped at a positive pressure ( 83kpa or 12 psi) from the through the in line filter to the pressure regulator in the TBI unit. The Chevy 454 was developed for distribution in the company's 1970s line-up. INTAKE MANIFOLD – If you are installing this TBI on a production TBI 2. Read on as Jeff Smith help a reader resolve an issue with his 1989 Chevy K2500 engine concerning the installation of TBI heads. After messing with my brothers 1992 454 TBI dually truck and now my 1991 TBI 454SS, I am going to say, I am not a big fan of the 91-95 GEN V big block engine. Both engines can benefit a LOT from higher flow cylinder heads and cams. The Firebird Formula was born with the same intensity and spirit that had brought about the creation of the famed Pontiac GTO six years earlier way back in 1964. I put a Noid light on and there was no pulse. So I did the normal spark plugs, wires, complete distributor, coil, test drove and still skips under load. 030 over/Compcams magnum 280 cam - roller rockers. But if you're looking for gobs of power, it requires modifications (I want to say a stock 454 TBI is factory rated around 230-240 hp, and 370-390 lb/ft of TQ or so). 4L Chevy, GMC (454), # 5235231 - $149. 4L/454 Engine Car and Truck Complete Engines when you shop the largest online selection at eBay. 6916779 and up. Most small and big block Chevy engines have 3 starter mounting holes drilled in the block from the factory. Shop with confidence. It is claimed that coil near plug is worth power and mileage compared to a distributor. That is a TBI unit and it does not flow very well above 3500 rpm or so and power falls of rapidily. The process for tuning OBD1 GM products is pretty much the same for all 86-93 model years. I have a 454 TBI alsothe first and easiest thing to do is advance the timing maybe 4*. 50 Add to cart; Seals-It Split Grommet 3″ OD, SGS35 $ 27. Used (normal wear), Full throttle body from mercruiser 454 7. The later model 454 use a Vortec casting that is supposed to be better than the old peanut ports. It's a pretty nice setup. Patients were admitted to the study and medically treated as has been described previously. The test kit I purchased ($50) included a adapter near an inch and a half long and has a schrader port to connect to the gauge hose. 1989 was the first year that TBI was available in the BBC. 7L Chevrolet truck. TBI 454 255hp @ 4000rpm 405 lb/ft torque @ 2400 rpm 454SS(91-93) and 94-95 3/4 and 1 ton trucks used 90 lb/hr injectors at 28-32 psi (high pressure system) Vortec L29 454 290 hp 410 lb/ft torque The Vortec 454 uses 8 24 lb/hr fuel injectors that are sequentially fired. General Motors (GM) 7. The recipe was simple: take a regular production car, offer it with the best suspension and most powerful engine you can cram into it, then sell lots of them to the younger generation. Best thing I ever did. The TBI isn't the 'biggest' restriction to overcome on a stock late-80's/90's 454 - it's the heads The TBI 2-port throttle body (flow @600cfm), the intake and the Peanut-port heads are barely capable of 350HP MAX. Essentially the same. 4 Master Engine Rebuild Kit 1979, 1980, 1981, 1982. Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. Engine Serial Number: The serial number tag is located near the starter, by the flywheel housing; or, on the rocker arm or flame arrestor cover. save hide report. The Code is divided into 50 titles which represent broad areas subject to Federal regulation. Electronics/Marine ( 416 ) 751-7326 home page Outdrive cross reference model number, make, cid, cylinders, model year and serial number for gasoline V8 engines. Every TBI will be Flow Bench tested, calibrated, and idle adjusted making it ready for easy installation. On my SOB, a '91 Rockwood 28' I had the 454 with factory fuel injection. Chevy 454 7. 4L MPI (Gen. 1988 was the last year of carburetors on GM's passenger cars. You'll need the 350 accessory drive pulleys and related accessory brackets as well as the TBI components. If your pulling heavy loads go with the 454. 1987 Chevrolet Other Pickups I took these pics a couple months ago. Over 35 Years of Satisfied Customers. It is a variable resistor. Re: Coolant Bypass on 454 BB Chevy 07/04/2010 2:31 AM I think you have the Q-Jet mixed up with the popular Widebeast V-9 of about the same time frame, about 1965 to 1988. My reasoning for looking at the larger TBI was started when I read the 350 TBI setup is only capable of feeding up to 275 HP. Headers, cam, intake and larger TBI setup will give you some gains, but involve a lot. Read on as Jeff Smith help a reader resolve an issue with his 1989 Chevy K2500 engine concerning the installation of TBI heads. ATK HP31 Chevy 350 87-95 TBI Base Engine 290HP, Call 866-721-2315 to Speak with an ATK Crate Engine Specialist. MERCRUISER INBOARD/OUTDRIVE MODEL IDENTIFICATION GM V8 427, 454, 502, 540 & 572 (STERN DRIVE) Cont. 5:1 the wider LSA on most TBI engines is to allow the sensors to detect less overlap at low rpms which tends to cause errors in the data due to reversion pulses in the intake runners, adding displacement and longer stroke tends to reduce that effect some anyway, and increase the low rpm tq Big block Chevy 454 with 550 Hp performance aluminum. The parts we selected from Edelbrock, K&N, March Performance, and Jet Performance Products installed in a. I had been driving it periodically around town for a few weeks when one day I went to move it from the side if the house to the driveway. The 454 big block became the industry standard for high HP and torque curves, with a boatload of useable power and room to grow as the budget allowed. I was wondering if anybody can tell me what sort of bottom end the 1988 - 1990 TBI Mark IV 454's have? I am looking at one for sale on the net. I wanted to show that you can put a carb on a tbi motor. I backed it off after 15 mins and it ran pretty rough (didn't want to stay running). VI) L010003-UP 1998 7. Annually 14. We started this high flow service in 1997. TBI has two fuel injectors in the throttle body, hence Throttle Body Injection. A truck TBi will usually have a 7747 ECM. I'll have to look more to see what else I used. The best it would do for fuel mileage was 9mpg. raumatic brain injury (TBI) is an important public health concern in the United States. I have had a fuel pressure regulator spring break in my TBI housing and this is not in the Crusader parts book. 6-8lbs boost on 93 pump gas. Chevy 454 / 450 HP High Performance Balanced Crate Engine $ 4,195. Specify carbureted or fuel injected and if detonation sensor hole is used For more power, call about 496 strokers, 502 and 540 CID motorhome upgrade engines DCKM2 $2,390. Every TBI will be Flow Bench tested, calibrated, and idle adjusted making it ready for easy installation. Practical advice on a particular subject that gives advice or instruction on a truck maintenance or service. $19,157 MSRP † PART NO. 6218037-6916778. According to multiple media reports about the subject, Katherine Williams-Dunning died in a car crash on Saturday evening on a highway in Henry County, Tennessee. Edelbrock 3764 TBI intake as I don't like the HEAVY iron mess GM installed that holds too much heat and I am having Vic at rvmorsemachine. (new $300-$500 dollars) (Used $50-$150). As Couponxoo’s tracking, online shoppers can recently get a save of 50% on average by using our coupons for shopping at 454 Whipple Supercharger For Sale. 4L TBI engines. I had a '99 Yukon and I have a '98 Suburban.