1972RedNeck

Dad and I are in the process of rebuilding an '89 cummins motor. The cam has some light pitting so we figured we might as well replace it. He will be running a Super HX40 or a Super B. We live at 4,000 ft. and travel up a lot.

What cam would you all recommend? Colt? Hamilton?

NE frmhnd

I'd get one that broadens the power curve and lowers peak torque RPM. But that's me. I'm going to go with a Colt stage 2 when it comes time.

Jim5870

A roller lifter and cam kit would be a neat upgrade, I wonder if such a thing exists?

dieselJon

Roller is negligible gains.

HAving talked to the man himself, my vote is for Zach Hamilton. When I get a cam, he is getting my business

NE frmhnd

When I talked to him he said Colt's stage 1 was probably a better fit for what I was wanting, lowest RPM possible at peak torque.