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Dana said

Are you saying that quech does not exist?

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I'm saying if the CR is where you want it, and you are at say .050 quench, screwing around to get it down to .040 won't make a pinch of **** diffence in either detonation resistance or power. Not one bit. BTDT.

Look at a Hemi. It doesn't have quench, but they run on 32 total. Look at the small block MoPar. They run on 35 total with the piston .100 down the hole, and you have to WORK to make it rattle.

Now, look at a SBC from the same era. Double quench, needs at least 40 total to run, and will rattle the rods right out of the block. Quench won't fix that.

Chamber shape and plug location are much more critical than quench. It's Chevy think.