Rear swap from 90 dodge truck into m715

[JCRJ]

I recently acquired a M715, I’m also new to the forums, first timer here. I have a 1990 d350 with 6bt. I’m thinking about swapping the entire drivetrain into the 715. Has anyone ever used the Dana rears from the dodge pickup?

[ray steadward]

Rears are pretty easy if they are wide enough to clear the spring packs....Measure between the backing plates.

[jhartings]

Welcome! Many Zoners have done similar swaps and it’s alot of work but should be a good project. Some custom mounts and will probably have to redo the axle perches but should work. Might want to check axle width. M715 hub to hub /axle width is pretty wide.

[Mikel]

Originally Posted by ray steadward

Rears are pretty easy if they are wide enough to clear the spring packs....Measure between the backing plates.

IIRC, way too narrow from brake backing plate to backing plate, but that's what disk brake conversions are for

[JCRJ]

So the dana60/70 in the rear of the dodge truck won’t fit under the M715? I’m measuring it all today so I’ll know by this afternoon. That will be a bummer.

[TXfirefighter]

I used an early '90's Dodge D-60. The WMS to WMS was great, Backing plates were wide enough but I did have to move the spring perches on each side and relocate the shock mounts.

[JCRJ]

That’s great to know. Thanks for the info.

[TXfirefighter]

Watch your pinion angle. If you use an NP205 or other high rear output t-case you'll need to pitch the pinion up to about a 10 degree slope or more.
Mine is going to live with what I have for now and solid u-joints.
It's right on the edge of needing a double cardan joint in the shaft and that would require raising the pinion to 15 degrees.

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