OHC-6 TECH Over Head Cam projects, questions and advice.

          
 
 
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Old 09-30-2017, 10:05 AM
azmusclecar's Avatar
azmusclecar azmusclecar is offline
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Join Date: Jan 2009
Posts: 295
Default Question I could NOT answer as to why our OHCs won't rev higher than pushrod engines

I was showing a neighbor the OHC and he is like me, has more questions
than answers. He asked me the redline for the OHC and I stated what I thought
was like 5200-5500.

He asked why it doesn't rev higher since the limiting factor to most pushrod
engines is valve float which we should not have.

We both walked away stumped for an answer since we both know the valve is
being moved just by the lobe on the cam. So why won't it rev higher?

I realize the heads have a lot to do with it and cam grind but just for clarity, why won't our OHCs buzz up there in the 6500 range?

Not that I want to do it, just curious as to why the limitations?

What say yee? Inquiring minds want to know.
Thanks,
AZ

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