The 14-bolt comes is two versions, a full-float and a semi-float, and the full-float comes in at least two distinctly different widths.

The 14-bolt under my '55 1st GMC looks to have the pinion exactly centered under the frame.

The project isn't finished so I've not experienced any problems like you mention. At least not yet...


1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble...