Originally Posted by B1MAXX
I don't think that's a speed pro/ trw. Their pockets are equal in size. That one appears to have different size ones.





I used to borrow Jacks valve pocket cutter to put my own reliefs in. I had to for those old .750 roller cams. Lol

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.38@138.67


Livin and lovin life one day at a time