What to look out for?

[Phily]

Originally Posted by edcasey

That's right the axles are 1.5 inch 35 spline which were also used in Dana 70's. Ford also used the same size axles from 1998 to 2003. Other than that Ford and GM (1992 to 2005) used 1.60 37 spline axles in their Dana 80's. Some had 8 lugs and some had 10.
One of the misconceptions is that the axles used in second gen. Dodges are the same as the axles used in the Dana 80 hybrid. Our trucks with Dana 70 rears are actually Dana 70U's. They have a smaller 1.41 inch 32 spline axle than a standard Dana 70. They also have smaller pinion bearings.

So is a Dana 70HD a standard Dana 70? I thought a Dana 70U was slighty more common than a Dana 70HD.

I don't know. The older Dana 70's, the Dana 70u and Dana 70 HD are pretty much a cluster f---. They also had 3 different pinion offsets from what I've found.

There is so much grey area with axles, and the variations don't help either. But that's what's good about these forums, discussions like this help clear things up.

[Phily]

Originally Posted by edcasey

That's right the axles are 1.5 inch 35 spline which were also used in Dana 70's. Ford also used the same size axles from 1998 to 2003. Other than that Ford and GM (1992 to 2005) used 1.60 37 spline axles in their Dana 80's. Some had 8 lugs and some had 10.
One of the misconceptions is that the axles used in second gen. Dodges are the same as the axles used in the Dana 80 hybrid. Our trucks with Dana 70 rears are actually Dana 70U's. They have a smaller 1.41 inch 32 spline axle than a standard Dana 70. They also have smaller pinion bearings.

Ford used 35 Spline D80's too? I was under the assumption Dodge was the only company to have 35 Spline Dana 80's unless I'm misreading.

[edcasey]

Originally Posted by Phily

So is a Dana 70HD a standard Dana 70? I thought a Dana 70U was slighty more common than a Dana 70HD.

I don't know. The older Dana 70's, the Dana 70u and Dana 70 HD are pretty much a cluster f---. They also had 3 different pinion offsets from what I've found.

There is so much grey area with axles, and the variations don't help either. But that's what's good about these forums, discussions like this help clear things up.

The Dana 70 HD also used 1.5 inch 35 spline axles. The difference is it uses larger pinion and carrier bearings than the standard Dana 70.

__________________
2000 3500 4x4, auto 4.10,BHAF, 4" MBRP, Power Puck, Converted to SRW, Walbro, DiPricol FP, PSC DSS, triple disk, billet trans

[edcasey]

Originally Posted by Phily

Ford used 35 Spline D80's too? I was under the assumption Dodge was the only company to have 35 Spline Dana 80's unless I'm misreading.

Check out this guide locker guide.pdf it's pretty accurate. If you look under Ford F/E 350, 450, 550 you'll find a 1998 to 2003 Dana 80 with 1.5 inch 35 spline axles. They were also 8 lug.

__________________
2000 3500 4x4, auto 4.10,BHAF, 4" MBRP, Power Puck, Converted to SRW, Walbro, DiPricol FP, PSC DSS, triple disk, billet trans

[Phily]

Originally Posted by edcasey

Check out this guide locker guide.pdf it's pretty accurate. If you look under Ford F/E 350, 450, 550 you'll find a 1998 to 2003 Dana 80 with 1.5 inch 35 spline axles. They were also 8 lug.

That has some odd listings. 40 Spline D-60's, Dana 70 front end's in F550's. I'm gonna have to look into that alittle more.