Quote:
Originally Posted by 40larry
Do the intake and exhaust valves have identical duration specs? Some MFRs list intake duration and exhaust duration specs separately.
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On most common vintage street cams the PROFILE on each lobe is the same.
The timing numbers can be different due to advancing or retarding the cam in relation to the crank.
No matter how much you advance or retard it, the lobe separation angle will remain the same.