Mopar Action 408 Build

I'm not sure what part of the engine you are worried about for durability, but would NEVER use a stock rocker on that head. EVER. Trick Flow relocated that rocker shaft saddles on that head and I'm waiting to see what the geometry looks like with that rocker.

Buy a good rocker, like the PRW stainless rocker and contact Mike at B3 racing engines to get his geometry correction kit. Read all the tech articles on his webpage. He also sells the rockers.