Quote:
Originally Posted by THI
There were two different GVWR for the 3/4-ton trucks with the heavy Duty being 8600 GVW. The 8600# GVW trucks came with LT235/85R16E tires while the Light Duty versions came with LT215/85R16C - forget if the light duty 3/4-ton is 6600 GVW or 7200 GVW. I do know the RPO C6P would be the 8600# GVW option.
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My 1976 apparently came with 16.5" wheels and something like 8.25 (pretty small) bias tires. At least that's what it had on when I got it 20 years later. First thing I did was go to a junk yard and trade out for some 16" wheels and LT245/75r16E used tires.
My 1973 K/20 was 7500 GVW and came with 7.50-16 8 ply tires on split rims. As far as I know, the only difference with the 8600 GVW was that it came with 10 ply. I routinely overloaded it and did manage to blow a couple rear tires
But the truck itself was Tough!