I know I had to get my Wisco pistons that were made for 440-1 heads re-cut for my B1 heads. Different valve angles. It cost me just under 100 dollars but that was years ago.


1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time