Dana 70 axle compatibility

Clutch, transmission, rear axle

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bluef250
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Dana 70 axle compatibility

Post by bluef250 »

Are a 1967 f350 Dana 70 rear axle and a 1979 f350 Dana 70 rear axle compatible? The axle is a single wheel, not dual wheel. Are the parts the same? Are the perch distances different?
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basketcase0302
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Re: Dana 70 axle compatibility

Post by basketcase0302 »

The spring perches set wider apart on the dents to start with:
http://www.fordification.com/tech/chass ... arison.htm
I also know that on the dent era DRW D70-the axle shaft bearing journal got smaller-making it weaker.
A few guys here have changed to a newer Sterling axle, maybe Dustin or someone can chime in here on the benefits of doing that. :pray:
Jeff
http://www.fordification.com/forum/view ... 22&t=46251
SOLD-71 F-350 dually flatbed, 302 / .030 over V-8 with a "baby"C-6, B & M truckshifter, Dana70/4.11 ratio, intermittent wipers, tilt steering, full LED lighting on the flat bed, and no stereo yet (this way I can hear the rattles to diagnose)! SOLD!
Many Ford bumps / one 76' EB / and several dents through the years.
A lot of "oddball" Ford parts collected from working on them for 34 years now!
2008 Ford Escape 4 x 4
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averagef250
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Re: Dana 70 axle compatibility

Post by averagef250 »

The 73+ Dana 70 was actually a real Dana 70, the bump version is more like a Dana 60 with a little bigger ring gear.

A 79 F-350 2wd may have a 34" wide frame, I don't know. 73-77 F-350's used the narrow 34" frame rails and 2 1/4" rear springs just like bumps. I've never put a tape measure to a 78-79 F-350 2wd and a lot of wierd stuff happened in 78-79.

Yes, you can bolt in a sterling from a 1997 or older F-350 cab chassis truck. This would mean any F-350 that did not come with a pickup bed on it.
1970 F-250 4x4 original Willock swivel frame chassis '93 5.9 Cummins/Getrag/NP205/HP60/D70
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