I put the EDM solid lifters in my 600 plus lift cam in my 422 small block. They seem to be working but the next time this engine comes apart I'm upgrading to a bigger roller cam. ( R3 block grinding necessary )

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