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86c20 · 03-15-2012, 08:47 PM

in my 86 c20 at 70 i get 20mpg and that is a 350 sm 465 and 3.42 rear gears and that is on the lower side of things have gotten up to 23+ but it was with better gas and a fresh tune

03-15-2012, 08:47 PM	#46
86c20 Registered User Join Date: Mar 2012 Location: edgartown mass Posts: 852	Re: Special Economy Truck? in my 86 c20 at 70 i get 20mpg and that is a 350 sm 465 and 3.42 rear gears and that is on the lower side of things have gotten up to 23+ but it was with better gas and a fresh tune