C80 Spec Tags

[C10 - C90 Bill]

Originally Posted by factorystock

Another C 80 with data plates. Same 25K GVW, but has the 9K front. IMO, it should be a 27.5K GVW. '63 was the first year Chevy mediums automatically came with narrow fenders, unless you got the 9k or 11k front axle. All '60-'62 Chevy mediums came with large front fenders whether they really needed them or not.

Right, that's why I separated '60-'62 and '63 to '66 above.

For some reason, Axles don't always add up to the GVW. My '67 7500 had 9 Fronts and 22 Rears, which should have had a GVW of 31,000, but the plate stated 27,500. May be a good question for Bob.

[factorystock]

To add more fuel to the C 80 max. 25K GVW mystery, a heavy duty 60 series, known as the C 60H comes in at 24K GVW. In my book, a C80 with 11K front and 23K rear ( maximum optional axles) is a conservatively rated 30K GVW rig. Great extra heavy duty truck to find without having to get a CDL.

[Bob B.]

Originally Posted by C10 - C90 Bill

Right, that's why I separated '60-'62 and '63 to '66 above.

For some reason, Axles don't always add up to the GVW. My '67 7500 had 9 Fronts and 22 Rears, which should have had a GVW of 31,000, but the plate stated 27,500. May be a good question for Bob.

Not sure about back in those days, but these days it is common to see a class 7 truck that would normally have a 30,000#+ GVW downrated to just under 26,000#'s. It's a CDL cheat, idea is to get a more durable truck without requiring a class A license to drive. Chevy even has a downrate package currently available on the 7500 LCF. You get the higher rated axles and tires but the GVW is the same as the 6500 model. Going back to the 60's era Chevy yes sometimes the only difference between the 60H and 80 was the availability of the 409 engine as Bill pointed out.