I read that link posted above and my planned 3 year rebuild never happened last Winter so I lowered my shift rpm from 7000
To 6700 rpm and ran it for a forth year. Everything must be ok as it was still cranking out 6.0 passes. Still same EDM lifters and Penn Grade (old Brad Penn) oil and a zinc additive for extra insurance.

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