I remember this thread also, and this axle was a Hd, not Hp, Dana 44. I do believe that there is a typo.

 

Well, several of you tried to help me...thanks, especially now that I have located a stamp on the axle. Apparently I didn't look very hard the first few times. It's the "446C" stamp, so it looks like I can sleep at night knowing it's a Dana 44. Yup, low pinion and not wonderful...but if it were the D60 low pinion it wouldn't have been much better. Much better than the Dana 30 on my 70 Bronco!

The question I now have, but won't lose sleep over, is whether the rig came with a Dana 60 to begin with. Some of you say the Marti Report is plain wrong, but we know it could be ordered with a 60; and the data plate on the door says it was. The rivit is half covering the axle code, but it's B4P...the "P" being the front axle code, just like the Marti Report says.

Number Dummy wrote: I'm not disagreeing with you--or should say I shouldn't disagree with you--but the shop manual I have for 1975 trucks says P=3,550 GVW Dana 60F. The GVW capacity matches the door tag, too. Possible that there was a mistake in the paperwork and tags, I guess, because it seems odd that a (roughly) 75 Dana 44 low pinion closed knuckle axle would go in to replace a near equivalent Dana 60 of the same year.

Also: Blown 331 asked: I need to do a cylinder check, like Bullitt390 suggests, but until then I’m going by a couple of things that may be considered circumstantial, yet compelling enough to me for the time being: a) the amount of money put in the engine (carb, intake manifold, etc.) really doesn't look like it would be justified for a 390 and b) the oil dipstick part number is for a 428CJ. I'll continue to investigate, though.

Thanks again for helping me figure this truck out! Dan.

 

It says in the first tag "4.09 Dana 60 front"

 

I asked my dad about the 428 thing and he said that 390s were internally balanced and 428s are externally balanced. So you should be able to just look at the balancer to tell them apart. If one side of the balancer has more material (weight) then the other then it would be a 428. If the balancer is uniform then it would be a 390 (or 360 etc).

 

The low pinion D60's only came in the 74-77 crew cabs.

 

Same balancer, it's the flexplate that is different. Other than that the 428 SCJ has the "hatchet" style crank spacer. But the balancers are the visually identical.

Josh

 

yes.....all dana 44s and dana 60s before 1977 1/2 were low pinion. late 77 thru 79 and later have been all high pinion . Also any 3/4 ton with a dana 60 was either a 1 ton or snow fighter option.

 

Yeah, that's what I've heard on this site...so what do you make of the VIN plate that says it came with a low pinion D60?

 

Looks like a Dana 44 HD to me.
1/2" nuts on the cover..

Your pic



A 74/75 Dana 60.





HD Dana 44 (yes it's 76/77 but same pumpkin)

 

Your pic



HD Dana 44




74/75 Dana 60 (Notice the ribs vs the 44)

 

mines a factory d60 front axle closed knuckles on my 75 crewcab. it has hyd ram steering. and drum brakes.

 

Never seen that before...

 

Can you take some picture for me?

 

here they are.

 

Could I get you to take a few more?
Like these -> Dana 44 Solid Front Axle: Reverse Spiral and Standard Housing info..

Would you be willing to e-mail me the original pics?

Any chance you could get the BOM?