I am going to be replacing the cab on my '63 C-10 with a cab from a '61 C-70. I know that the cab mounts are spaced differently because of the different style frames, but I noticed one other difference between the cabs that I am having a hard time finding information about. The transmission hump is in two pieces on both cabs, a front part that covers the bellhousing, and a rear part that covers the transmission, but on the original cab, the front part is spot welded on, and on the new cab it is bolted on.
I need to replace the front part, and if I knew why they were different it would help me know what to look for. I noticed that there is a cover plate on top of the C-70's bellhousing that my truck doesn't have, so my current theory is that the big truck transmission humps were bolted on to allow access to the bellhousing, and the smaller trucks were spot welded, since they didn't need access.
I would like to get a bolt-on type if that is possible, but if my theory is correct they only put the bolt-on type on big trucks, but my truck has a standard 3-speed, and thus a low transmission hump, and I don't think any big trucks had the low hump. If that is the case, I can cut the spot-welded one off of the '63 cab and weld it on, but that sounds like a major headache. If anyone can confirm or deny my theory, or give me any other information on the subject, I would be very grateful.
Thanks in advance!
