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Sell those 915's to Ademon for $500 since he LOVES them so much and use the money more wisely. What makes you think he needs to do any grinding on the 452's? Remember he's wanting 400hp not 600 and with 3.55 gears and a 2000 stall converter on a 5000# car your thinking way outside the box! 400hp with stock valved 452's is easy with a simple cam swap and headers! 915's don't flow better than 452's and to take advantage of quench with closed chamber heads requires domed pistons milled to spec which
A: costs alot of money at shop rates
B: puts the compression outside of daily driver/pump gas usage.
The speedpro 6pk pistons are good pistons but their too heavy IMHO Just trying to keep it light (old habit)

Oh and JohnRR I think his shop is thinking about chevy's with the piston flip.

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