1962-1963 GMC K1500 hubcap

[factorystock]

This factory photo shines some light on 3/4 ton 4x4 hubs. IMO, a specific wheel size must required a cap with a hole, where as, other wheel sizes did not require a cap with a hole.

[60-66]

Originally Posted by factorystock

This factory photo shines some light on 3/4 ton 4x4 hubs. IMO, a specific wheel size must required a cap with a hole, where as, other wheel sizes did not require a cap with a hole.

If you go back to post 10, it says in the parts book that the cap with the hole is for 17.5 and 19.5 wheels. Great photo FactoryStock !

[factorystock]

Thanks. I thought I knew GMC's well, then the parts book says N series, J series, G series and F series, I'm at a complete loss. Side note, I noticed the front wheel on your '65 K 20 is the correct deeper offset 17" wheel, however the rear wheel appears to be the shorter offset 17", more commonly seen in pre '60 3/4 tons.

[60-66]

Originally Posted by factorystock

Thanks. I thought I knew GMC's well, then the parts book says N series, J series, G series and F series, I'm at a complete loss. Side note, I noticed the front wheel on your '65 K 20 is the correct deeper offset 17" wheel, however the rear wheel appears to be the shorter offset 17", more commonly seen in pre '60 3/4 tons.

N=1960 1961
J=1962
G=1963
F=1964-1966

Parts book refers to this hubcap as J and in a previous comment I mentioned it was a "1962" only or possibly only made one year hubcap. I think they later figured out it wasn't necessary to make a 4x4 hubcap ? As the hole size took out the entire GMC stamping anyway.

That left rear on the 65 , I think, was a spare from another truck that the fire department used at some point . It came with the other correct 4th rim but the "original" tire was shot

[factorystock]

Thanks for the clarifications on GMC series identification, never knew that tid bit of info before. I agree on the cap, one year wonder, then discontinued.