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Old 07-17-2003, 10:54 AM   #1
69sixpackbee
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Join Date: Jan 2001
Location: Sabinal, Texas
Posts: 1,706
The cam and the distributor are spinning at 1/2 engine speed FYI. Yes, RPM is the actual revolutions in 360 degree increments per minute of time of the reciprocating assembly. If you could see the front of the cranksshaft spin once completely around in one minute that would be 1 RPM and the camshaft would have gone just half-way around. It is a 2:1 ratio.
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