The Stovebolt Site Forums The Parking Lot Tons 'o Fun Cruising speed?

The mid '70's GMC with the DD 8V71 and 10 speed that I drove could do an ok job, I was loaded at 80,000 every night from Columbus to Ann Arbor, didn't seem to matter if it was Budweiser or Michelob Light, the light beer seemed to be just as heavy as the full strength Bud. Truck only had 500 or 600 thousand miles on it so maybe it was fresh enough to run, prior driver did have the wick turned up a little and it would run 3100 - 3200 rpm.