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Re: 305V6 differences
Appears to have the original optional heavy duty multi piece 17" rims. Truck tire shops should have no problem mounting new tires with tubes. The diameter of a 7.50- 17 tire is equivalent the diameter of a 8-19.5 tire. Taller is better on 3/4 tons. Standard ratio of a V6 GMC 3/4 ton is 4.10 compared to standard ratio of a Chevy 3/4 ton at 4.57.
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