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07-15-2014, 09:00 PM
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#1 |
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Registered User
Join Date: Jul 2014
Location: wichita, kansas
Posts: 2
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upper a arm
I have a dumb question on the upper a arms on a 1972 chevy 1/2 ton truck are they held on by bolts or studs? I cannot get up in there far enough to see.
 I have gone through all of my sockets and have found nothing that fits. any help would be awesome.Thanks Craig |
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07-15-2014, 09:14 PM
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#2 |
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Senior Member
Join Date: May 2004
Location: johnstown, NY
Posts: 2,393
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Re: upper a arm
They fit on studs that are attached to the crossmember. Let me see if I can find a picture for you...
Last edited by jlaird; 07-15-2014 at 09:19 PM. |
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07-15-2014, 09:25 PM
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#3 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: upper a arm
The studs stick through the a arm and have nuts and shims on them for alignment purposes.
  The studs go through the 2 holes on the upper shaft.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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07-15-2014, 10:17 PM
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#4 |
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Registered User
Join Date: Jul 2014
Location: wichita, kansas
Posts: 2
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Re: upper a arm
Thanks for the awesome picture. I thought they were studs but could not see them. They just spin when I try to take them loose. Can I replace them with bolts when I take them out?
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07-16-2014, 08:22 AM
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#5 |
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Registered User
Join Date: Nov 2001
Location: Springfield, MO
Posts: 2,930
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Re: upper a arm
I dont know why not but you will want to tack weld them in place otherwise they will be tough or impossible to tighten. The guys at the alignment shop would hate you lol.
They are a knurled end just like a stud for your wheels. They will need to be grade 8. I cant remember if I replaced mine or not when I had them out I think they are kindof a "specialty" fastener a little hard to find the correct ones. If they are spinning then your hole has enlarged so unless you weld some on your hole chances are the new ones will also spin. Good luck David
__________________
Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!" |
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07-16-2014, 01:14 PM
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#6 |
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Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: upper a arm
Yes and no. You need really strong bolts (at least Grade 8, and I'd try to find an ARP or better bolt. It holds your wheel on.)
Also be cautious about welding the bolt. David is right above that if you don't tack them they might be hard to tighten, but the head of welding might wreck the hardness of the bolt. Maybe a tack will be ok, I don't know. And don't breathe the fumes from a cad plated bold being welded.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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07-16-2014, 03:45 PM
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#7 |
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Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Re: upper a arm
I would agree on this also. I don't know if I would weld them are not. Just tack them in so they want spin would be enough. I would try finding the correct kind of stud and looking really close to the frame and seeing if you can weld the frame up enough to hold the studs. This maybe a better opition.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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