RSX302 Future--Engine Poll...

[93Polo]

I would not be concerned with what GM rated the blocks at, so many have blown past those #s on all 3 blocks. There is a guy over on performancetrucks that claims he put down over 600rwhp on a turbo 4.8. The pic I linked into Gokou's topic was a local truck manifold twin turbo 5.7 ls1 or ls6 block running a stock crank that eventually went up to 900rwhp.

On the heads, when I was researching a maggie build in place of the heads and cam I did on my C5, the 72cc chamber truck heads had a larger diameter chamber than a 5.7 (3.9") block bore making the chamber a mushroom.

I also like Vengeance Racing localy for LS motorand mods. Last I heard, they have Pro-line do the assembly which builds Tim Lynch's and other racers Outlaw 10.5" tire turbo motors. Ron Mowen is the guy to talk to at Vengeance. They do ship anywhere.