We need to know what rear you have under the truck. There is not a 6.17 available for the factory Eaton rear. The original rear would have 4.10, 4.57 or 5.14 gears.

There is a locker unit available for the Eaton rear. It was factory installed in some trucks and probably shows up here in the swap meet or on eBay.

I've seen them for sale but don't know of any right now.


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...