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| | | | Joined: Apr 2009 Posts: 36 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2009 Posts: 36 | I want to change my 47 3/4 ton AD P/u front axle to a 1/2 ton I have a chance to buy an axle off of a 55 will it work. I'm gonin to change the rear but there not hard to find. I'm having a little trouble finding the front stuff. | | | | | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | Okay you're dealing with the two years that have two models... You say the '47 is a an AD which I'm assuming is an Advance Design and not an Art Deco. But what '55 is the axle coming off?
If the '55 is a 1st series (Advance Design) the axle swap should be workable, but if its a '55 2nd (Task Force) I don't think its a reasonable swap.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 |
Steve,
The 41-55 1/2 ton axles are the same but the 3/4 ton axle changed in 1953 (same from 46-52). Do you know what changed? (I know this is not relevant to the question but it would be interesting to know).
Tim
| | | | | Joined: Mar 2004 Posts: 874 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 874 | Tim,
I believe in '53 the 3/4 ton front axles changed to a thrust bushing. '52 and earlier had a thrust bearing. The bushing being much thinner than the bearing, the difference was made up in the length of the king pin boss area on the axle, if that makes any sense.
I have both style axles and have compared/studied them before. I'll take another look at them tomorrow to make sure. | | | | | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | I didn't know about the change in the 3/4-ton axle, but since the question was about going to a 1/2-ton axle I think my answer is still good...
I've only owned one 3/4-ton and its been gone for years. It was a '47. There is a '54 3600 with a Hydra-Matic in my shop today (not mine), and if both where here I could examine the difference.
If I understand the description of the difference it sounds like the spindles would be the same for either one?
Was there a similar change on the 1-tons? I do have a variety of those I could compare.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | | | | Joined: Apr 2009 Posts: 36 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2009 Posts: 36 | Thanks guys I found a set of axles on e-bay I have not yet bid on because I don't know if they will work it's a set of oem spring and axles front and rear from a 55 1/2 ton I have the 47 3/4 ton. I'm still trying to decide what to do 3/4 ton brake parts the huck stuff is tuff to work with, no one sells a disc brake conversion kit for it. | | | | | Joined: Nov 2001 Posts: 1,517 'Bolter | | 'Bolter Joined: Nov 2001 Posts: 1,517 | Check your Private Messages.
What part of Calif. are you? Im helping with an estate sale of 37 year collection of old chevy truck parts.Mostly 47-54
Loads of trans.engine parts,heads,bell housings,rear ends,front axles,drums,manifolds,sheet metal,hard to find small parts,doors and parts,etc....etc....
Marty | | |
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