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Old 02-12-2017, 06:02 PM   #23
learyw
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Join Date: Dec 2015
Location: Westminster, CO
Posts: 26
Re: 78 K20 Gas Milage Suggestions

I pushed the timing to 12 deg this morning and re tuned with vacuum. I read a few other posts confirming I need to run around 12 because of my altitude here in Denver. It feels better than it has in the year or so Ive owned it. We'll see if it makes a difference in milage. Either way, I feel like I just got a great kick in power.
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1978 K20 Camper Special, stock 350, TH400, np203, 265/75R16, GMC 10.5" rear, Dana 44 front 3.73, Q-jet.
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