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Author Topic:   Trouble Degreeing Cam
69-er
Member
posted August 19, 2001 08:42 PM
I'm having trouble degreeing my camshaft. I'm using a timing gear set with the three-keyway crank sprocket. (-4, 0, +4 degrees) When checking the cam at the 0 degree mark, all opening and closing points come out to 4 degrees advanced compared to the cam card. When checking it at 4 degrees advanced, all readings come out to a total of 12 degrees advanced. Now, when checking it at 4 degrees retarded, the readings come out correct at 4
degrees retarded. Other than the opening and closing points being wrong, the other readings match the cam card within a degree or two and .002" max.

I tried other types of timing sets, all Dyna Gear brand, with the same results. I even tried compensating by retarding the cam a tooth off and using the +4 keyway, (which was a total of +12 degrees, remember) but wound up with -4 degrees.

My questions are:
Does anybody have any ideas what might be going on here?

If I can't find a solution, what would be the result of running it +4 or -4 degrees?

I know advancing the cam is supposed to boost low end torque and retarding boosts upper RPM torque, or something to that effect.

Thanks!

Larry

sdhnc29
Member
posted August 19, 2001 11:45 PM
Call me at 828-286-0780 between 8:30 - 5:30 Eastern time . I'll be happy to help , and it would probably be easier than writing back and forth .
Ask for Steve or Bill Hendren
Hendren Racing Engines


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