I know that I am a little late to the party on this, but here is what was on my 1954 3100 Hydra-Matic truck when I purchased her back in 1976. (See pics below.) The wheels are 15" 6-lug w/clips (6 clips total). According to information obtained from the GM Heritage Center and from the previous posts, these 15" rims were a RPO back in 1954. However, from a discussion I had from an old gentleman on E-Bay, he said that the 1954 trucks had three clips. Does anyone have an answer to this? Are these wheels not original?
As you can see from one of the pics, the dog dish hubcaps that my truck came with are the step down bowtie hub caps that came on the passenger vehicles. Was this another option that was maybe offered by the dealer and not listed in the RPO documentation? I am presently purchasing the correct hubcaps from Jim Carter, but does anyone know the answer to this? Could the passenger vehicle hubcaps have been offered? I do know that my truck is not the only truck I have seen with these. Like Awesome Grandpa, I am just now getting kicked off with my restoration efforts and I have seen several like mine. Could they have been part of the Hydra-Matic package. If so that would explain why Greg's "54 H-M Rolling Chassis" had the 15" rims. Mine are not split though, riveted but not split. Greg, do you remember what style of hubcaps were on the chassis before you shipped it off?
I know that I have provided more questions than answers, but I thought maybe these questions might be relevant to this discussion.
Thanks, SLC
Cruisin' in the Passing Lane Former owner of a 1954 3100 w/Hydra-Matic "To know what you know and what you do not know, that is true knowledge." - Confucius