Quote:
Originally Posted by Oldmics
I just pulled this from a 55 Bird. Not sure if it was the original assembly or not.
As you can see mine is marked with a "C" prior to the 44 casting.
I was under the impression that they are Dana 45 assemblys.
Using the smaller bearing , lighter duty axles than the big brother Dana 44.
Oldmics |
The DANA 45 was a heavier assy. It was used on MERC SW mid-fifties or so.
Quote:
Rear Dana 44 solid axle
Dana 41
The Dana 41 was the precursor to the Dana 44 and was used from the 1930s to the 1950s. The ring gear on the Dana 41 is nearly one inch smaller than a Dana 44.
Dana 44
The Dana 44 rear axle first saw use in the 1940s and is still in use today. The Dana 44 has a GAWR up to 3,500 lb (1,600 kg) and is a semi-floating type, having one bearing on the end of the axle shaft which carries the weight of the vehicle on the axle and also allows axle rotation.
There is an 8.9" diameter Dana 44 ring and pinion that is very different from the standard Dana 44. This ring and pinion is significantly stronger with a better pinion to ring gear tooth contact patch and angle. It was typically used in the back of jeep JKs, Isuzus and Nissan pickups. This ring and pinion does share some components and can be adapted into an earlier Dana 44 but requires some work, different bearings and spacers. The benefit is the larger ring gear, better angle cut on the teeth and Dana 60 diameter pinion shaft.
The Dana Spicer Max momentary output torque FT-lbs
- Low pinion Dana 44 30 spline............3460 [ft/lbs]
- High pinion Dana 44 30 spline...........4170 [ft/lbs]
- Low pinion rear 8.9" Dana 44 32 spline..5340 [ft/lbs]
Dana 45
The Dana 45 was introduced during the 1950s as an upgraded Dana 44 with larger 20 spline axle shafts. Since the Dana 45 is no longer being made you can use the Dana 44 gears in the Dana 45 housing if you use model 53 pinion bearings and plenty of shims.
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SOURCE-
https://en.wikipedia.org/wiki/Dana_44
The 'C' appears to be stamped?