What is Quench

Building for quench takes a lot of detailed measuring and machining. In all cases there's value to building for it. But it
s not always enough value to make it worthwhile. Building for it with any open chamber Mopar head is just that: a cost-prohibitive waste of effort.


I agree. Ain't no way I'm going to believe once you get to ~.050ish the rest is just picking the poop out of the fly pepper.

Guys get all whacked out about quench and then use valve notches that are too big, rings that are too thick and everything else.

If I'm at .050 quench and have the compression I want I leave it. If everything else is correct it is no more prone to detonate than anything else.

I've been doing this **** since 1980 and even with the piston .080-.100 down the hole I couldn't get them to detonate if you have the correct plug, a decent timing curve and a tune up in the carb that wasn't dumb as a bowl of soup.