Cam timing adjustment question:

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Nov 11, 2001 | 05:49 AM

marky mark

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Burning Brakes

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Cam timing adjustment question:

Can someone please refresh my understanding of how to adjust the cam to be other than "straight up"?

Is it: if you advance it, the power comes on quickly? And if you retard it the power comes on in the higher range of rpm? Any help appreciated. :chevy :flag

Nov 11, 2001 | 11:59 AM

tsw71

Drifting

Joined: Mar 2001

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From: Indiana

Re: Cam timing adjustment question: (marky mark)

Quote:

Is it: if you advance it, the power comes on quickly? And if you retard it the power comes on in the higher range of rpm? Any help appreciated. :chevy :flag

Yeah, that is correct. Figure on about 500rpm difference/2 degrees. This will apply to the entire power range of the cam. Or in other words, taking a cam that is good for 1500-5500 and retarding it by 4 degrees should cause it to run between 2500-6500. Some cam manufacturers grind 2 degrees advance into the cam at the factory to make it more streetable. Talk to the cam company's tech people about this before advancing a cam.

Tom

Nov 11, 2001 | 03:50 PM

marky mark

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Burning Brakes

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Re: Cam timing adjustment question: (tsw71)

Thanks for the info Tom.

Crane said the cam comes with 4 deg. advance ground in. I am happy with cam, but have more than enough torque down low and it gives out about 4500 rpm. So, by moving it back 2 to 4 deg. that should just about be perfect. Cam was installed "straight up".

regards, mark :flag :chevy

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