Advance Timing.

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Nov 2, 2007 | 01:15 AM

Bro107

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From: Cantley

Advance Timing.

I'm running a single pattern cam(roller) lift .498 adv. duration 282 with shaved H.O. heads. My timing is set at 10*and I'm wondering if I should run it at 12*and how many RPM's at idle? My idle is set at 700.

80 F150

Nov 2, 2007 | 01:22 AM

Bro107

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From: Cantley

By the way the engine is a 302 Mustang GT with a 600 cfm Edelbrock and performer air gap intake.

80 F150

Nov 2, 2007 | 04:12 AM

HemiEater

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run as much timing as you can.......when it startes to ping just back it off a little....

Nov 2, 2007 | 05:52 PM

baddad457

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From: south louisiana

Ditto, run as much timing as the fuel you're using will tolerate. Sounds like you've got an E303 cam.

Nov 3, 2007 | 11:34 AM

Mr. M

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From: Redmond, WA

Depending on how much your heads were worked... you should be able to run 18* or more on premium fuel and 13-15* on 87 octane.

Like hemi said, advance it until you hear it ping, and then retard it a little.

Nov 5, 2007 | 10:15 AM

clgreer

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ive always been curious what exactly a "ping" sounded like. ive tried to do this on my 302, and never really heard a ping. of course ive only advanced it to about 12-14 myself..

Nov 5, 2007 | 04:44 PM

baddad457

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From: south louisiana

Pinging is also refered to as "valve clatter", this is usually heard in accelleration. When I first fired off my 331, the tank was full of 87 octane, in that instance, it didn't ping, it was more like gravel being crushed in the cylinders.