'66 Axle and Transfer case ID help

[cottonme173]

Hello! I have a friend selling a 1966 frame. I am looking to identify the Axles and transfer case before I buy.

66 Front Axle by UNFORGIVEN173, on Flickr

66 Rear Axle by UNFORGIVEN173, on Flickr

66 Transfer case front by UNFORGIVEN173, on Flickr

66 Transfer case rear by UNFORGIVEN173, on Flickr

Cheers!

[scoot_mcgrute]

Front axle looks like a Dana 44, rear looks like a Dana 60. Not sure on the transfer case, not too familiar with the pre-New Process stuff.

[cottonme173]

Originally Posted by scoot_mcgrute

Front axle looks like a Dana 44, rear looks like a Dana 60. Not sure on the transfer case, not too familiar with the pre-New Process stuff.

Thanks Scoot!

I was told that the Front and Rear were both Dana 60's and the transfer case was a Spicer.

[scoot_mcgrute]

Originally Posted by cottonme173

Thanks Scoot!

I was told that the Front and Rear were both Dana 60's and the transfer case was a Spicer.

The 44 and 60 front diff axles look very similar in separate pictures but when you see them side by side, it's easy to spot which is which. The front Dana 60 used in Chevys didn't come out until the late 70s and they all had the passenger side spring perch cast into the center section and 2 threaded holes to hold the spring pad in place in the center section as well. Dana 44s used 2 u bolts like what you have there.

If you could get a picture of the knuckles, that would be the best way to ID the axle, open knuckle Dana 44s used ball joints where the Dana 60s had king pins.

[Captainfab]

My money is one the front being a Dana 44. Is this a 1/2 ton frame and running gear or a 3/4 ton? The transfer case I believe is a Rockwell T-221. The rear disff could be either a Dana 44 or a 60. If it is a 3/4 ton it is a Dana 60. A 1/2 ton could be either a Dana 44 if the frame is a GMC or a Dana 60, typically a Chevy diff but rare in a 1/2 ton.

[cottonme173]

Originally Posted by Captainfab

My money is one the front being a Dana 44. Is this a 1/2 ton frame and running gear or a 3/4 ton? The transfer case I believe is a Rockwell T-221. The rear disff could be either a Dana 44 or a 60. If it is a 3/4 ton it is a Dana 60. A 1/2 ton could be either a Dana 44 if the frame is a GMC or a Dana 60, typically a Chevy diff but rare in a 1/2 ton.

Is far as I know this was a 1ton K30.

[cottonme173]

I can check tomorrow and look for the VIN on the frame. That was a thing in 66 right?

['63GENIII]

Originally Posted by cottonme173

Thanks Scoot!

I was told that the Front and Rear were both Dana 60's and the transfer case was a Spicer.

If you look at the webbing on the front diff, there should be a very slight raised number in the casting. My money is on it being a D44 front and D60 rear.

T case is a Spicer 23 or 24. I had one in a 57 Napco 1 ton years ago. IIRC the 23 was Ford and the 24 was GM or something like that. Could be the other way around. Its been a while. If there is a tag on it, it may have the Spicer name printed within the Dana diamond that we are familiar with.
Looking at the x member that's supporting it, Im guessing it's not original to the truck either. Decent T case. A little noisy but plenty strong. I ran one in a '76 CC Dually that I converted years ago. That truck was flogged anytime it was driven.

The 221 has shorter shift shaft "nubs" and its inspection plate is on top. One more dead giveaway is that the 221 input is on top and the output for the rear is on the bottom and at the same level as the front output. I suppose that this is the reason that the 221s run hotter than most. Power is transferred though an idler even in 2wd instead of being coupled to the rear yoke like the 205 or the Spicer units which basically use the T case like a center support bearing in 2wd.

[cottonme173]

Originally Posted by '63GENIII

If you look at the webbing on the front diff, there should be a very slight raised number in the casting. My money is on it being a D44 front and D60 rear.

T case is a Spicer 23 or 24. I had one in a 57 Napco 1 ton years ago. IIRC the 23 was Ford and the 24 was GM or something like that. Could be the other way around. Its been a while. If there is a tag on it, it may have the Spicer name printed within the Dana diamond that we are familiar with.
Looking at the x member that's supporting it, Im guessing it's not original to the truck either. Decent T case. A little noisy but plenty strong. I ran one in a '76 CC Dually that I converted years ago. That truck was flogged anytime it was driven.

The 221 has shorter shift shaft "nubs" and its inspection plate is on top. One more dead giveaway is that the 221 input is on top and the output for the rear is on the bottom and at the same level as the front output. I suppose that this is the reason that the 221s run hotter than most. Power is transferred though an idler even in 2wd instead of being coupled to the rear yoke like the 205 or the Spicer units which basically use the T case like a center support bearing in 2wd.

Great info thank you!

Cheers!

[cottonme173]

Originally Posted by '63GENIII

T case is a Spicer 23 or 24. I had one in a 57 Napco 1 ton years ago. IIRC the 23 was Ford and the 24 was GM or something like that. Could be the other way around.

All of the outputs have a C23-XXX number on them, so this would be a 23?