Topic. right now, the ls3 has 376 ci and I'd like to upgrade to the 454 ci that the lsx454 has but without having to buy the whole engine. I plan on adding LT's, new cam, headers, forged pistons, etc. as I save up the cash to the stock LS3 but the bigger project later on is to get the 454 ci somehow and still keep the cam,LT's, etc that I put on the Ls3 so I don't waste them. Would this even be possible or do I have to actually buy the whole lsx454 to get the displacement upgrade?
