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Thread: Engine Swap

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  1. #1

    Default Engine Swap

    I have an 07 classic with the 4.8 in it, is it possible to swap the 4.8 out and put a 5.3 in? Ive heard the blocks are the same, but wouldnt i need the wiring harness and computer to run the 5.3?


    07 silverado classic
    4.8 vortec
    2 1/2" drop shackles
    Diablosport Predator :)
    custom air intake

  2. #2
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    U would need the ECU or a custom tune.. wiring is the same for the 4.8L, 5.3L, and 6.0L.
    Mike

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  3. #3

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    basically this is a direct bolt in then? im trying to find out as much as i can cause im thinking about buying a 5.3 and modifying the engine. im not sure if i want to stroke the engine or just bore it over.

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    Basic bolt in yep.. same tranny, and motor mounts. And plugs for the wiring. With a modified motor you will want a custom tune either way.

  5. #5

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    i knew if i get the ecu for the 5.3 i still would have to get a custom tune since i was going to modify the motor. ive also heard the 6.0 would be a bolt up too, but i want to take a smaller displacement motor and build it.

  6. #6
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    Well the 5.3L is the way to go, there are a lot of aftermarket parts available for it. And why not just build you 4.8L up as much as possible then go with forced induction for another 40-50% power increase???

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