That 60' is WAY off. Was the cam degreed in as the numbers look almost like the cam is retarded. That's a lot bigger cam than mine especially when your do the 1.6 rocker calculation.

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