tbi

  1. C

    1992 GMC Sierra ZZ4 Engine Swap Question

    Working on a 1992 GMC Sierra Regular Cab Shortbox. Pulling the original motor and replacing with a GM ZZ4 crate motor I removed from a 1969 Camaro a while back. My question is? Can I make the engine swap and remove and reinstall the factory throttle body on the ZZ4? I intend to use all the...
  2. Treyes

    4.3 tbi v6 cam and lifter questions (1992)

    Got myself a 1992 4.3 tbi single cab as my first truck and it does its job, but as a highschooler i want it to be as fast and loud as it can be so im looking to buy a cam and anything else i can afford but i need yalls help figuring put what is best for the money so any recommendations im all...
  3. C

    Would like advice/info on engine swap

    Hi, I currently have a 92 c1500 with a 305 TBI, 700r4 combination. The 305 is feeling pretty weak and i've been researching new engines. I thought about rebuilding the 305 but id rather drive the truck up until a new engine is ready and it just doesn't seem worth it in the long run and resale...
  4. T

    Cam upgrade??

    Hi all! I have a 94 K1500 with a 5.7L, NV4500, 14-bolt-3.42 gear ratio, E-cab, stepside. It now has new top end gaskets and fuel pump and it runs much better than when I purchased it. I could not pass it up. I had been looking for one of these trucks for a while and when I found this one with...
  5. Curtis Woodhams

    Dads 94 steppie rough running

    So I went to get dads steppie yesterday and it will idle great go to give any gas it spits and sputters and falls on its face. Dad had a stroke in November so it has been sitting since. Just before that I rebuilt the tbi. He put a good used fuel pump in it and new fuel filter. New plugs, wires...
  6. Y

    How to remove the throttle shaft from a TBI unit?

    Hello, Recently made a wrong turn breaking down my truck's TBI unit. I wanted to completely take everything apart and de-grease it but didn't realize the small screws connecting the butterfly valves to the throttle shaft were blunted to the back of said shaft. I've broken all of them off and was...
  7. Blanco_obs

    350 tbi ideas

    Okay so I’m newish to the hole 350sbc tbi think. To be honest I mainly felt with Honda stuff then got a job at a Chevy dealership and rebuilt my truck exterior wise to what it is. Now I want to do my engine. I have a sbc tbi setup. I’m the 2nd owner. 100k miles. Now I could get my hands on a...
  8. B

    Blowback our of the TBI

    Got a 91 K2500 5.7/350 TBI. Just put new edelbrock cylinder heads and intake in. New distributor and ignition coil, as well as starter and battery. All new parts on accessory drive. TBI is the original one. Went to start it up and it’s cranking but it’s blowing back fumes out of the TBI every...
  9. Treyes

    4.3 tbi wont start, need help!!!

    Got a 92 4.3 tbi that wont start even after replacing spark plugs, starter, fuel pump, did the timing, and distributor (all of it). I don't know what else it could be. it does crank but doesn't want to actually start. Help me out.
  10. S

    New Injectors, now runs bad

    Hey all! If you guys remember one of my previous posts from awhile ago I was trying to chase a random shake/miss? at idle, and extended crank time before start. Otherwise ran fine. Well, alot of parts and sensors have been replaced. 94 C1500 TBI 350 IAC Knock sensor TPS TBI Rebuild New Delco...
  11. M

    4.3 TBI timing not advancing

    At the end of my rope with this engine, it's a 93 4.3 pulled from a 4x4 manual S10 and transplanted into a Jeep Wrangler YJ. Still running a simplified harness and TBI from the S10. The main issue I'm facing is I can't get the computer to control the timing advance. I've set the baseline to 6...
  12. V

    '92 K2500 5.7 TBI - Crank for days and no start after intake gaskets...

    Got a frustrating one here! We could really use some expert help figuring this out... BACKGROUND: 1992 K2500 Sierra SLE 5.7l TBI w/147K miles Bought in 2017 for son and I to have as a work and "project" truck We have been repairing, upgrading, and restoring the usual - A/C compressor...
  13. V

    Grateful to have found this Forum!

    I ran a '69 Pontiac with a 350 "back in the day"... Learned most of what I know about old school wrenching from that car and the few that followed her. Recently got into vintage GMC truck world with my teenage son... We bought a "barn find" '92 K2500 and have been having fun with the basics -...
  14. S

    At my wits end.. Looking for any idea.

    Okay, this may be a long post so apologies in advance. I have a 94 1500 with the 350 TBI. I have owned this truck a little over a year now. I bought it with a blown motor because P.O decided to run it hot and then put water in the coolant and it froze and busted the block. Regardless, found a...
  15. studigggs

    350 TBI: Scanner Shows Knocking on Acceleration

    1990 5.7 TBI. So I just picked up an MT2500 scanner and have been playing around with it. I notice that the knock sensor is going off whenever I accelerate (even with mild throttle). Is this normal? Engine runs smooth, no CEL, no modifications from OEM. I'm guessing this is the way its supposed...
  16. L

    454 TBI Problems

    I have a 1993 k3500 454 NV4500... The engine is a semi fresh rebuild(50K miles) with a small cam. I have replaced the following some parts multiple times... The truck has a stumbling rough idle. Seems to lack power to me but im not sure. If i take the truck for a short drive when i come back and...
  17. Aelfred-cyning

    262 VS 350: An obvious, difficult choice.

    Hi everybody, first post so good to meet y'all. I have a '95 C1500 W/T that I grew up with since I was an infant (we even have the same birthday). It's in decent shape for the year, at least for a Michigan saltmobile. I finally got myself a replacement frame so that I can start my restoration...
  18. 9

    1994 k2500 Overdrive Shutter

    Hey guys! Been having a weird issue with my truck that I'm having some problems figuring out. Basically, for about a year now I've been having this issue where in TC lockup in either 4th or 3rd gear if I give it any more than 1/4 throttle the truck will shake violently. You can see what it's...
  19. N

    350 TBI Woes

    Hey guys, Ive used this forum in the past and have been able to find answers for what I need but I cant seem to figure out whats going on with my truck now so I finally joined up so I can post. So heres what I got. Back in december I bought a 1988 k1500 350 TBI. Drove it home an hour and a half...

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