RSX302 Future--Engine Poll...

[RSX302]

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.

I'm not all that concerned that the block can't handle over GM's ratings, just wondered how they come up with it. There must be some reason why the LS3 block is rated higher then the LS1/2 & 6? I can only assume they go by the weekest link (block, sleeves, mains etc..) and rate it with some kind of engineering mathmatics?

From what I've heard and read, it looks like the LS6 & LS3 is the counterpart fix to the LS1 & LS2 with bay to bay breathing etc. The LS1/2 & 6 all kept the same rating of 450hp where as the LS3 jumps to 525hp? I'm sure GM didn't pull that out of their

[RSX302]

Ok...here we go with project RSX transplant. I will try and keep updated pics of the changeover. Should have the LQ9 shortblock from Texas Speed in a couple of weeks.