Quote Originally Posted by 2ndclasscitizen
550hp N/A from a 383? Easy. An LS2 is just under 383 (I'm pretty sure) and the standard exhaust + intake + cam + tune would net you 550hp easy. On say an old SBC you could still do it, maybe do some head work as well, put the compression up as required and tune it for higher octane fuel.
High compression and pump gas?
The LS2 is a 364 and has a few advantages over the older engines.