Quote:

Quote:

Sorry didn't mention the reason for custom pistons is the heads have 55cc chamber and I will need a custom piston with a larger dish to suit our 98 pump premium and still not not affect the .040" quench, hence me considering the 6.250 rod......if that makes some sense.



Just talk to Diamond... I had them reduce the dish
volume, move the pin height and open the valve relief
on a shelf piston... I have a 59cc chamber




I was thinking of using an off the shelf Chev forging and having it modfied...........most piston manufactures tell me it is sill a custom piston price though.