1970 GMC Other Repair Question
Topics covered: Miscellaneous.
Mileage: 10 miles.
Mileage: 10 miles.
Asked on February 1, 2011
Poor gas mileage
Have 1970 c10 gmc p/u w/350ci v-8 & 4Bbl Holley carb & AutoTrans which gets 10mpg. A friend w/ same setup gets 20mpg. Both have 3.70 gears. Why? What can I do?
Asked by Bumpa