Re: Fuel Mileage
Before about a 500 mile road trip, I "super-tuned" my '66 GMC 1000, 1/2 Ton Short Bed with a 305E, 3-Speed on the column. Not sure of the rear gears, but they were the typical stock type gears of those years (It was revving at 60, lol).
The engine was 100% pure stock. I filled the tank to the top to get the most accurate reading and I got 15 1/2 MPG on that trip.
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Drove and owned many, but some of the more interesting ones were:
-'60 GMC 2500 Dump, 305 V-6
-'62 GMC 4000 Flatbed, 305 V-6
-'62 GMC 6500 Flatbed Dump, 478 V-6
-'67 GMC 7500 Box, 6V-53 Detroit
-'71 GMC 9500 Flatbed Dump, 637 V-8
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