500hp & 600hp Bench Racing thread

My 2 cents s in the small blocks.

Rat Bastid said

3.58 stroke is 360 so I’d be setting it up to shift at 7000-7200. It would take a fully ported head and a solid lifter cam that’s at least 265 @ .050 to do that. Minimum 11.25:1.

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I’d follow this as well. A lot depends on the cylinder head on hand which can change the camshaft selection. Currently the 340 I’m working with is on a 108 LSA, well ported aluminum heads and a 2.08/16.0 valve set up. It’s not a 500 hp build, though I expect a good street machine engine.

For the 4 inch stroke I’d drop the RPM back to 6500, I’d probably be 272 @ .050 and I’d bet it would be on a 103 LSA.

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I’m doing this now (parts collection actually, I have most of it) the cam I have for this is a Ultradyne solid FT @ 272@050 intake. On a 102. It’s a NF lobe. I’m sure it’ll sore past 500 hp. We will see what the dyno says.