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Class of 69 · 03-29-2003, 08:03 PM

Did you change the speedo adaptor to compensate for the new gears?? The speedo might be registering a lot more miles than you are really traveling, hence the mileage improvement.

03-29-2003, 08:03 PM	#2
Class of 69 Registered User Join Date: Mar 2003 Location: Stillwater MN Posts: 1,166	Did you change the speedo adaptor to compensate for the new gears?? The speedo might be registering a lot more miles than you are really traveling, hence the mileage improvement. __________________ 69 GMC K10 ..some restoration required....still..