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1970 GMC Other Repair Question


Topics covered: Miscellaneous.
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?
Avatar Asked by Bumpa

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