Originally Posted by bigbadswingdaddy
2. 4.11 gears in your housing. They can be found in 67-72 3/4 tons with automatic transmissions
Some of those trucks have a Dana rear instead of the Eaton. The Dana gears will not swap.

The Eaton has a large round center section while the Dana is very angular in its shape.

I know a couple of people who have been searching craigslist and ebay for these gears for years without success.

One of them bought a set that proved too worn to use. Another bought a set that turned out to be the 4.57 gears instead of the 4.11.

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...