Timing Sweet Spot

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Dec 5, 2005 | 05:37 AM

ImNotFreud

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Joined: Dec 2004

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Timing Sweet Spot

I have a 302 Installed in a 1977 F-100. Also has 670 double Pumper Carb.Performance intake. Dual Exhaust. Mustang 3 Speed. I installed a Cam with the following Specs.
Adv Dur----260-260
Dur @ .050 .212-212
Valve Lift .447-.447
Lobe Sep 110.0
Looking for the timing Sweet Spot. I have started from one end of the Spectrum to the other and still seem to get pinging upon acceleration. Any help and suggestions are appreciated.....Thanks...

Dec 5, 2005 | 10:33 AM

Blurry94

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From: Calhoun GA

Premium gas will allow you to run more timing, and reduce detonation.

Dec 5, 2005 | 10:52 AM

Torque1st

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Moved to proper forum.

Dec 5, 2005 | 12:40 PM

Kemicalburns

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Joined: Jul 2002

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From: Bend,OR

10*btdc with vac advanced off would be a good starting point.

Dec 6, 2005 | 07:02 PM

F-150Guy

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Joined: Nov 2004

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I just rebuilt my 302 with an Rv cam..it has similiar specs to yours, at first i ran it at 10 degrees...but it sounded like a diesel it pinged so much, then tried 8 degrees, still pinged. I took it down to 6, and it runs great with no pinging, my gas mileage improved as well. Check the box that your cam came in..is there a sticker on it with the specs? mine actually told me where i should set the timing