OK, so 51x3 front brakes with 2-1/2" springs tells me you have the 7000 front axle.
We already figured you have the 15,000 Chevrolet Rear axle so your max GVW is 22,000 pounds.
"22,000 gvw has 8.25 x 20 10 ply front, 8.25 x 20 12 ply rear; 7,000 pound front axle with 3.500 pound springs; 10,400 pound rear springs; HD Frame for GVW."
Seems to me there sould be a plate on the truck stating the max GVW is 22,000 pounds, otherwise how would the DOT guy know what the truck is rated at?
Mike B
