Quote:
Originally Posted by von guido
umm,you really think there is a comparison between a bbc and sbc? you have to build a radicle street sbc to get 500 rwhp and a bbc on the same power level would be MILD. I have a 30.1 inch rear tire with a 3.08 gear and with a MILD 454 I can flash the convertor at 40 and break the rear loose...and my cam is right @.500 lift so VERY tame for a bbc.
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500
rwhp is not mild in a bbc. that equates to approximately 650-700 hp at the crank. Now it is easy to build that with a bbc and it will be milder than a comparative hp sbc, but it isn't exactly "mild". That is a very healthy motor indeed.
I do agree with pretty much with jrcaprai. If you are going to 500-550, a small block is fairly easy to do. Other than visual factor, a 500 hp bbc is almost a waste these days; on funds, fuel and the cubes that motor can provide. over 500, and the bbc really shines.
My 383, as spec'd in the Aug. 2010 issues of super chevy, puts out 480hp and 495ftlbs. I too used a scat bottom end but with AFR 195 heads and a flat tappet cam. With a little more cam (mine is a .490 lift) or even a roller, it would easily go over 500hp.
The other route would be an LS or LQ motor. With their heads, they can do 550-600 hp as easy as a BBC, if not easier. Of course there are other costs associated with swapping in one of those.