I had five years on my EDM lifters from Hughs on a .650 lift cam in my small block. I didn’t mic everything yet but they look good and the car was still running 6.0’s.

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