Quote:
Originally Posted by Kurt in NJ
Anytime I try to drive 45 i end up over 50----the second day after I rebuilt it I knew it would go 67, I have original stock head, no overdrive, have driven over 65 all day...
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What rear end ratio are you running? With stock gearing (3.78's), at 67 your engine would be spinning ~3000 RPM (on paper). More in real life.
Quote:
Originally Posted by 30 Closed Cab PU
I thought 2200 - 2400 was max safe RPM on an A stock motor.
Yes, No?
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That is similar to what I have heard... At 50 MPH my engine is at 2200 RPM. (Using Tach and GPS).