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#1 |
Registered User
![]() Join Date: Aug 2020
Location: Lewiston, MI
Posts: 7
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WTB 70 6 lug axle shafts
My 70 GMC has the long (31-1/2") axle shafts with 6 lugs. The bearing surface on the axles are badly worn, and I'd like to replace them. I can find new axles, but they all seem to be 1/2" studs, while mine has the original 7/16" studs. Don't really want to have different size lug nuts front and back. Anybody on here do a 5 lug conversion and still have their good condition 6 lug axles?
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#2 |
67-72 parts collector,
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,701
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Re: WTB 70 6 lug axle shafts
I have a set.
Not sure how good the axles are. I can send you some pictures.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#3 |
67-72 parts collector,
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,701
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Re: WTB 70 6 lug axle shafts
I checked mine on the bearing surface with calipers and the measured 1.616”
31-1/2” long axles. I think shipping will kill the deal.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#4 |
Registered User
![]() Join Date: Aug 2020
Location: Lewiston, MI
Posts: 7
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Re: WTB 70 6 lug axle shafts
Thanks Keith. I will have to measure mine to what size they are at. I did measure them already, but only remember the difference between the worn and unworn bearing surface. You might be right on shipping, too. Zip is 49756 if you want to check cost.
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#5 |
Senior Member
![]() Join Date: Apr 2003
Location: Elberton Ga.
Posts: 3,470
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Re: WTB 70 6 lug axle shafts
you can use 4X4 axles out of 73-80 trucks too. same axle.
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#6 |
Registered User
![]() Join Date: Aug 2020
Location: Lewiston, MI
Posts: 7
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Re: WTB 70 6 lug axle shafts
I thought those were a direct fit, but all of them I've found have 1/2" studs. Has anybody found or are aware of any 7/16-20 studs that could be swapped into these axles? Haven't had any luck finding any yet.
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#7 |
Senior Member
![]() ![]() Join Date: Jan 2005
Location: CA
Posts: 5,569
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Re: WTB 70 6 lug axle shafts
I am in the middle of rebuilding a 1970 12-bolt rear axle assembly. I saw your post earlier this morning, and it got me worried. I've been waiting for some Moser 14071750 axle shafts to arrive from Summit. I spent the last couple of hours looking online for a 7/16 stud with a .530 knurl, but like you I couldn't find any. As chance would have it, FedEx just delivered the axle shafts half an hour ago, so I measured the stud holes, and they are actually the correct size for 7/16 studs. There is a question on Summit about the stud size, and there is a "Product Expert" comment that says these axles are for 1/2 studs, but that is not correct. I installed a Dorman 610-186 7/16-20 stud and it pressed in perfectly.
Last edited by pjmoreland; 03-19-2022 at 02:48 PM. |
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#8 |
Senior Member
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Location: CA
Posts: 5,569
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Re: WTB 70 6 lug axle shafts
More photos
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#9 |
67-72 parts collector,
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,701
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Re: WTB 70 6 lug axle shafts
I thought the 73-87 1/2-ton 4x4 axles used 7/16” studs also.
Am I wrong?
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#10 |
Senior Member
![]() ![]() Join Date: Jan 2005
Location: CA
Posts: 5,569
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Re: WTB 70 6 lug axle shafts
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#11 |
67-72 parts collector,
![]() Join Date: Nov 2002
Location: Mid-MO
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Re: WTB 70 6 lug axle shafts
The only 1/2” stud 71-87 axles are the 5x5 pattern axles.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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#12 |
Senior Member
![]() ![]() Join Date: Jan 2005
Location: CA
Posts: 5,569
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Re: WTB 70 6 lug axle shafts
For me, it was just a question of what size the studs were on reproduction axles.
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#13 |
Registered User
![]() Join Date: Aug 2020
Location: Lewiston, MI
Posts: 7
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Re: WTB 70 6 lug axle shafts
Well fellows I guess I need to apologize for the runaround. I had tried to find the stud size of the replacement axles, and like pjmoreland the only reference I found was Summit's "expert" claiming they were 1/2" studs. I had a question into Moser asking about the stud size, but still haven't received a response. Guess I will go ahead and get new axles ordered up from Summit, and a special thanks to lolife99 for all of your help.
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#14 |
Registered User
Join Date: Dec 2010
Location: livingston co.mi
Posts: 2,458
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Re: WTB 70 6 lug axle shafts
I have a set down here in Livingston county they been sitting for quite a few years..
Came out of my 67..
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California 65 GTO---Texas 64 burb 283 ---Oklahoma 67 CST SWB BBW wood bed 327 2004r---New Mexico 72 k10 350 350 auto---Georga 72 short step project |
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#15 |
67-72 parts collector,
![]() Join Date: Nov 2002
Location: Mid-MO
Posts: 22,701
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Re: WTB 70 6 lug axle shafts
67 axles will be shorter than the one year only 1970 6-lug axles.
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Keith Convert to disc brakes. http://67-72chevytrucks.com/vboard/s...d.php?t=444823 |
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