1972 GMC 2500 Timing Degrees? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dyingdeadman · 09-30-2004, 04:34 PM

Any Ideas? Fully stock. 6 degrees? 8? little help please

dyingdeadman · 09-30-2004, 05:08 PM

sorry, would help if i put the engine displacement in there, it's a 402cid
sitting at about 4 degrees btdc, trying to make the deiseling stop

Longhorn Man · 09-30-2004, 06:24 PM

Is it idling high? You running low grade fuel?
It shouldn't do that with 4 degrees. I'm thinking (but not sure) that iyt is supposed to be 6 or 8 degrees, which would make your engine behave worse.

09-30-2004, 04:34 PM	#1
dyingdeadman Registered User Join Date: Aug 2004 Location: san marcos,tx Posts: 266	1972 GMC 2500 Timing Degrees? Any Ideas? Fully stock. 6 degrees? 8? little help please __________________ 72 GMC sierra 3/4 ton 402 bb 68 GMC 3/4 ton 2010 camaro rs: daily driver

09-30-2004, 05:08 PM	#2
dyingdeadman Registered User Join Date: Aug 2004 Location: san marcos,tx Posts: 266	sorry, would help if i put the engine displacement in there, it's a 402cid sitting at about 4 degrees btdc, trying to make the deiseling stop __________________ 72 GMC sierra 3/4 ton 402 bb 68 GMC 3/4 ton 2010 camaro rs: daily driver

09-30-2004, 06:24 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Is it idling high? You running low grade fuel? It shouldn't do that with 4 degrees. I'm thinking (but not sure) that iyt is supposed to be 6 or 8 degrees, which would make your engine behave worse.



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