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    im almost out of ideas

    Hi, I have a 88 c1500 that I just put a 90 5.7 TBI swap in, I changed the computer when I did the swap. Basically the engine wiring harness was all plug and play, besides a few strange plug ins that I can't see plug into anything. Anyway, I just put my exhaust on, and a new 02 sensor (pretty...
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    Swapped 5.7 TBI in my truck, need help.

    I have taken the 4.3 TBI out of my 88 c1500 and put a 5.7 TBI in it. I used the 4.3 wiring harness, and swapped computers (not sure if I had to), anyways long story short, three truck starts and runs, but runs sluggish. Upon light acceleration it sputters bad until the rpms get up a bit then it...
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    4.3 tbi motor soon to be 5.7 tbi motor, question

    Thanks man, really appreciate it
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    4.3 tbi motor soon to be 5.7 tbi motor, question

    Swapping a 5.7 tbi motor in the place o my 4.3 tbi, like to get an answer from somebody who does actually know for sure (not just assuming). Will the original 4.3 harness that was in the truck work with my 5.7, a lot of people say no it doesn't but had equal amount of people say it would, need a...
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    4.3L to 5.7L

    Everything this guy said basically sums it up, doing the swap now, not very hard just time consuming
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    Engine swap questions

    I am underway in this same swap myself, I just removed my bagged out 4.3 and bought a low mileage unraped 350 tbi truck from an old man, if you have any questions just pm me, all the stuff I ran into I can tell you and how to fix them, good luck!
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    350 tbi to 350 carb swap

    Bump for interest
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    Burnout pics/videos thread...

    Badass burnout man
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    What brand of plugs are you running?

    Ac delcos
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    Computer question 4.3 to 5.7 tbi

    I am currently under way in a 4.3 to a 5.7 swap. Ive read I have to swap the computer from the 5.7 in the place of the 4.3 computer in my trick now, however the 5.7 was originally attached to a auto trans and I'm gonna be running a standard trans on the 5.7. Will I have any problems there ? And...
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    4.3l to 5.7l swap, need urgent answer to stupid question !

    A buddy of mine is running the same trans as I'm going to be without any problems, all I really need Is the answer to the question (not trying to be rude or hateful) thanks lol
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    4.3l to 5.7l swap, need urgent answer to stupid question !

    I have a 88 Sierra 2wd with a 4.3 in it, standard trans, bought a parts truck with a low mileage 5.7 in it, auto trans, I have the 4.3 and my manual trans out and am planning on removing the 350 this weekend. Where I am gonna put the manual trans on the 350, the flexplate (because it's auto)...
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    The Stupid Engine Questions Thread

    I have a 88 gmc Sierra 2wd, standard trans, 4.3l tbi. Recently bought a 90 gmc Sierra with a 5.7 tbi automatic. I already have my 4.3 and trans removed and am planning on putting the standard trans on the 5.7. Bought a new clutch kit, and it was brought up to me by someone that the 350 flexplate...

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