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Author Topic:   Trouble Degreeing Cam
69-er
Dirt Full Roller

Total posts: 39
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
Dirt Full Roller

Total posts: 74
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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