Quote:
Originally Posted by Advanced Design
Dumb question for my learning...how were you able to tell the cam was ground for mechanical lifters? Guessing the shape or timing of the ramp?
Thanks for taking the time to share your knowledge.
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There are no dumb questions, but there are a lot of dumb answers.
My friend Pete who did the machine work on my engine is an expert in matching components for an engine. The most expensive go fast parts in the world won't make any power if they don't work together. Pete looks at the engine as a whole and the purpose of the engine and picks a cam profile that is compatible with same. He has most of his performance cams custom ground and being someone who takes nothing for granted he checks them for accuracy. By putting the cam between centers and using a dial indicator he can plot the profile and compare it to what he ordered. The differences in mechanical and hydraulic flat tappet cam profiles are subtle and this is the only way to tell as far as I know.