Originally Posted by jasonapr78
Well I'm just trying to figure out if it'd be cheaper overhauling the engine and trying the swap and going from there or modding the 3.8. My concern with the 3.8 is if it can handle 500HP at the wheels. That is my goal for the car. I have the money to do it but trying to figure out the best solution to attain that kind of power and have the car running great and not be messed up because of it.
Our turbo car has dynod over 619 at the wheels and up to 30lb of boost. The iron block of the 3800 will probably hold more boost than the aluminum of the LS4. Your right however that yoru starting with more on the LS4 and in fact we are looking into turbo applications for the GP GXP. Your main issue will be the PCM in the bonneville not able to handle the DOD requirements of the LS4, and an LS4 PCM not being able to handle the BCM in the Bonneville.