This 451 will be a 10.25:1 street strip motor with a goal of around 500hp, and will likely see between 6000 & 6500 RPM.

413 crank turned down to "B" std.; 400 Block w/ fresh mainline hone.; Cleavite P bearings, std.: ARP main studs.

I don't own a micrometer & bore guage. Plastiguage says I'm between .015 & .020, and is consistant at all journals. Am I too tight? Should I take the crank back to have the main journals polished a bit?