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Thread: carb v8 to efi v6

  1. #1
    Join Date
    Apr 2008
    Posts
    2

    carb v8 to efi v6

    Hey i'm looking to put the motor out of a 93 Chev truck into my 77 chev pickup, actually the motor trans and computer, and i was wondering if anyone had any tips because its not impossible but i've never done anything of the sort, its a v-6 replacing a 350 and 5 speed replacing a turbo 350 please anything to point me in the right direction

  2. #2
    Slimsilverado Guest

  3. #3
    ff_jeff Guest
    most people go the other way, Not sure on how to swap that one.

  4. #4
    Join Date
    Sep 2007
    Location
    Texas
    Posts
    5,301
    April fools

  5. #5
    Join Date
    Apr 2008
    Posts
    2
    yeah but i'm looking for more gas milage and i picked this one up cheapp.....it'd be the same for any old motor to new motor swap wouldn't it

  6. #6
    ff_jeff Guest
    the tranny should be close, but im preety sure you will need different motor mounts. As for everything else... Driveshaft is different I think. Youll need a complete harness for the v6. Have no clue but im sure the exhaust should work with a little modification after the headers. you might need a different yolk for the drive shaft, or rear end. Im sure the engine will fit but to be honest with you my wifes 4.3 is a 97 with 95k miles and it only gets about 20-22mpg... If I baby my 4.8 in my extended cab I can get 20mpg ( If I dont spray or race) As for internally, The 350 and the 4.3 should be the same minus 2 pistons, rods , and plugs. I think they are even the same bore and stroke. just 6 slugs instead of 8... although the year difference might cause it to not fit... I would not be suprized if it bolted right up... sorry for the novel. but this is the first of this kind I have heard of man.

  7. #7
    You would likely get the same milage or better from a 4.8 v8 or a 5.3 that is in the LS generation. I had a 90's efi v6 that thing drank more gas than my Trans-am GTA with a TPI 305. Not to mention how much mileage are you really gonna gain a couple hundred bucks a year?. . . . . .
    99RCSB Broke because I wasted thousands and thousands of dollars on my truck.

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