What is Quench

Quench and squish is better explained in terms of two strokes, except it's not exactly the same. You change the width of the squish band on a two stoke and it affects power. I've seen guys fault mill a 2T head, up the compression and lose power. The squish band was too narrow and it no longer matched the pipe and port work.

Quench in a 4 stroke isn't nearly as critical. In fact, the testing we did only showed enough power gain that you could say the power came from the raise in compression.

That's why I don't get worked up over it. Especially with Chrysler open chamber heads. They are not nearly as bad as most people think and are miles and miles ahead of the junk **** chambers Chevrolet used on their stuff from the same era.