The Dana in the charger is a 70 model out of a challenger, and has 35 spline axles in it. The one I am building i bought in a box of parts and am using a Strange housing to utilize the side bearing adjusters. Anyway, Im going through the Trac Lok and axles and see they are a course 26 spline axle. I didnt know the Danas used that on the earlier models.


Is there a good source for torque specs on the carrier, and for pinion preload? Or will my Yukon cheat book work for the specs?

The Bee is a mild 434, 383 with 440 crank, and I am running 3:54 gears, so I am not concerned at all about the axles, I just had the opportunity to buy the Dana parts cheap, so went that rout VS my 8-3/4.

Mopar had Dana Corp. change the size of the axles beginning in 1970 from the smaller course 27/26 spline to the larger diameter 35 spline axles for all the cars that came with Dana 60 in 1970 and 1971
BTW, I have a new set of factory Dana clutch type posi unit side gears for 30 spline axles that I will sell so you can use the 8 3/4 axles on one side, Dana passenger axles have a short and long axle stock

pre-1970 "Powr-Lok" was 23 spline. 1970-up "Trac-Lok" was 35 spline.
35 spline would be factory for a '70 E body.

Not sure precisely when the change was made, but do recall the '70 model year.

If you do have a 23 spline Powr-Lok, it would, by most folks, be considered an upgrade over the later, usually considered less desirable Trac-Lok diff.
If you want to use it, you can order some 35 spline side gears from Dr. Diff to use it with the later axles.

For general service specs, I think the factory service manuals at mymopar dot com should have more than what you need.

Thanks guys. Ive got great axles, and ordered the Trac Lok rebuild already from Dr Diff.

Pretty sure my lil 434 wont hurt this set up! LOL If it does, then Ill upgrade to the 35 spline stuff.

Thanks guys.