new lazy lifter....

318willrun said

My opinion is the new fast lobes of today are hard on valve train. period. Require higher spring rates, and more people are failing at cam break in.

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Don't suggest an old school grind like a Crane. You'll be in trouble with the ranks. Back in the day they used duration to make power. Easy on drive train though. We didn't have lifter, spring, and flat lobe issues like we have today.