I would like to upgrade the open Dana 70 differential (4.10 gears) in my '76 F350 with 460 and C6. I don't want a locker, or a limited slip with clutches. I prefer a geared limited slip. Has anyone done this; if so, can you tell me what manufacturer you used for parts/components.

Thanks

 

Doesn't look like Torsen makes one for the 70:

http://www.torsen.com/files/Torsen%2...2010-09-28.pdf

I find Detriot Lockers, and Power Lock (ramp and clutch), but no TruTrac for the 70:

POSI & LIMITED SLIP > DANA 70 > SP 707028X

Stand by for more replies, maybe.....

 

Thanks for your quick reply. That's kinda what I've discovered. Had I ordered this truck with a LSD, what would I have gotten? I know it would have been a set up with clutches, but not sure exactly what it would have been called posi-trac??), and would Dana have been the manufacturer.

 

I have a Lock Right from Powertrax in mine and it is the greatest. Very low maintenance, easy installation (hour and a half), acceptable price ($487)
For a Dana 70 you need to know the spline count on your axle shaft, 35 or 37.
35 is the most common, but it only takes 10 minutes to check.
Happy wheeling.

 

The Dana engineer I spoke to at the SEMA show last week, also recommended the PowerTrax unit. Now tell me how I can get an axle shaft spline count in 10 minutes.

Thanks