dana 70 3.07 swap

[jjohns816]

I found a Dana 70 from a Dodge Cummings 1st generation 88-92 with 3.07 gears. I am wanting to swap this in for my Sterling. How much width difference is in these axles? I know the vss sensor is in my rear end now and the Dana 70 does not have one. Can I drill the case and install one? Any information about this would help. Thanks.

[madpogue]

No direct experience, but I doubt the VSS would work just by mounting it. The sensor counts teeth on a tone ring (aka reluctor) on the diff gear, and if that Dana diff was never intended for a speed sensor, it probably doesn't even have that ring.

[terryknight]

brett (brettmavrick) built a tone ring for his truck. you could ask him. or you could put higher gears in your rear.

[JSchuricht]

One option I have seen is to mount the tone ring to the drive shaft but if you go that way, normal tire calculations for speedometer setup won't work because the gears will come into play.

[Diesel_brad]

Why go thru all that work, why not just regear your sterling to a 3.08

[jjohns816]

Originally Posted by Diesel_brad

Why go thru all that work, why not just regear your sterling to a 3.08

If you can find a vendor or a machine shop that can make one. I am unable to locate a 3.08 for mine. I have been reading up on people that add a tone ring for speedometer. I normally drive by RPM since my speedo is slightly off now. I also thought that the 3.08 sterling was in 92 and older trucks and there was a change in the 93+ ones so the 3.08 would not work. Just trying to figure this out. Thanks.

[Diesel_brad]

3.08 gears
OEM part # E5TZ4209A

Motive part # F10.25-308

Alloy USA # F10/308E

[jjohns816]

Originally Posted by Diesel_brad

3.08 gears
OEM part # E5TZ4209A

Motive part # F10.25-308

Alloy USA # F10/308E

The Motive part # says it is for an 86-92. The Alloy part # is for a 99+. If I am able to order these will they fit in my 96? Is there a write up? Thanks.

[Diesel_brad]

Call someone like randys ring and pinion or your local shop that sets up axles