Quote:
Originally Posted by 1976gmc20
What size tires do you have now?
If say 8.25-20 maybe go to 900-20 or 1000-20 for a little less highway rpms ???
(I hate seeing these big trucks cut down  )
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Presently 9.00x20 - Originally equipped with a 292 I6. Even with 12.00x20, the rpm would be 'howling' at highway speed (3,574 @ 65 mph).
The heaviest Hauling planned is a car trailer with a Military Ambulance for Shows and Parades.