Re: MPG for a 402
'72 GMC, LB; I average around 10 MPG, but I have (honestly) gotten almost 12 MPG on the freeway on a long trip while "feather footin'" the throttle.
BTW, my '69 with a 355 does just about the same. Both trux have 4.11:1 rear ends.
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'69 Chevy 1/2 T LWB Stepper: Daily Beater
'72 GMC 3/4 T Fleet: Another Daily Beater
'72 Plymouth Gran Coupe: ?
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