How much quench can I run?
I would shoot for .040. Just use the .039 felpro gaskets. You may still loose some quench effect with your pistons. Here is a pic of my piston thats going in my 440. Its a KB piston with a quench pad for open chamber BB heads. I will be using them with my milled 906's and I went with the Cometic gasket. The quench pad sticks .055 above the deck and my chambers are .020 deep. So with the .074 gaskets I got it will have right about .040 quench and 10.0 comp. If your piston flat matches your closed chamber head it may still have good quench effect. Ron
I would shoot for .040. Just use the .039 felpro gaskets. You may still loose some quench effect with your pistons. Here is a pic of my piston thats going in my 440. Its a KB piston with a quench pad for open chamber BB heads. I will be using them with my milled 906's and I went with the Cometic gasket. The quench pad sticks .055 above the deck and my chambers are .020 deep. So with the .074 gaskets I got it will have right about .040 quench and 10.0 comp. If your piston flat matches your closed chamber head it may still have good quench effect. Ron