The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Carb tuning AFR, and 10-1 compression

**MySons68C20** · 09-16-2021, 08:56 PM

What is your total mechanical timing (vacuum disconnected) at 3000 rpm?
I would start at 34 deg total and see where initial is as a baseline.
As far as afr at cruise light throttle 14 ish is fine.

09-16-2021, 08:56 PM	#2
MySons68C20 Senior Member Join Date: Sep 2014 Location: Wenatchee, Wa Posts: 897	Re: Carb tuning AFR, and 10-1 compression What is your total mechanical timing (vacuum disconnected) at 3000 rpm? I would start at 34 deg total and see where initial is as a baseline. As far as afr at cruise light throttle 14 ish is fine.