What oil were you using. So far so good with my solid lift cam, edm lifters, brad penn, and a zinc additive. Coming apart after 3 years for freshening and possibly a roller cam

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