Ok so let's say I'm shooting for an 8.8:1 compression ratio.

And yes. Hank piston being milled where the chamber opens was exactly what I was talking about. That way it doesn't mess.with quench.

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By ending up with .015" quench, that is all you need to do to get your compression where it needs to be.

I'm afraid I don't understand what you were trying to say. 0.015" is well under the recommended range you mentioned.


69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.