Originally Posted By cudaman1969

RBs From 65 up 440-6 only, 64 down Max wedge.
Same pistons year to year, no


I want to make sure I understand your information, so only 6 pack engines had pistons with valve reliefs from 65 up and only Max Wedge pistons had valve reliefs is 64 and older. And 440s did not use the same pistons from say 65-71.

Thanks

Careful, your character's showing!