The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 88-90 454 gas mileage

Colt Cobra · 02-07-2010, 03:31 AM

7, all day everyday, wether Im driving 3 miles or 300 miles, I avg 7 in mine, 1988 C3500 Extended Cab Dually with 74,400 on orig. Motor Trans and Rear End...

02-07-2010, 03:31 AM	#3
Colt Cobra Registered User Join Date: Sep 2009 Location: East Texas Posts: 253	Re: 88-90 454 gas mileage 7, all day everyday, wether Im driving 3 miles or 300 miles, I avg 7 in mine, 1988 C3500 Extended Cab Dually with 74,400 on orig. Motor Trans and Rear End... Last edited by Colt Cobra; 02-07-2010 at 03:32 AM.