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I don't know if this will help you or not, but I'm working on a 75 440 that's out of a truck, and the pistons measured .0160 to .0162 down, so compression would be quite low from factory. Not to hijack this post, but could I deck the block and re-use the factory pistons or get earlier year 440 pistons to get a better compression ratio. Looking to do a budget build, Thanks...



You can buy new KB hyper pistons from summit for 310 bucks with a .075 quench dome or 320 for flat tops (I have no idea why the flat tops are 10 bucks more).