5.7 vs 6.4 SRT build and swap

6.4 block is beefier than the 5.7. The 5.7 has a cast crank; the 6.4 crank is forged. 6.4 is a much better platform to start with. Add some "drop in" forged rods / pistons and you have a real nice short block.


Agreed, with flow numbers in the 340 range, no porting is really required either. 600 would be easy to attain.