Re: 77 gmc c35 dually 4-53t detroit
Lots of looks when its up high in the rpm. I was getting about 17 mpg but I found a fuel leak so that's fixed. I drive 30 miles a day I filled up on sun and I still have a full tank. Its a 15 gal tank I am guessing 20's. The rpms are at 1900 at 65.
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