Not trying to be a smart azz but check to see if you have the uppers on the uppers and the lowers on the lowers. It should be marked on the back of the bearing shells.

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