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#1 |
Registered User
Join Date: Jul 2010
Location: central michigan
Posts: 1,192
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Upper A-Arm compatibility?
So my upper a-arm bushings are squeaking and I don’t want to deal with replacing the bushings . I’d rather replace the whole a-arm. I can’t fnd 67-72 stock type arms, but could I use 73+ ?
Thanks |
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#2 |
Registered User
![]() Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: Upper A-Arm compatibility?
From what I understand you have to change the front complete under carriage assembly to get the updated rubber bushings in the front end.
The 67-72 all used metal bushings in the upper and lower A-arms, Get a front from a 73-87 and rebuild it. Unless someone knows of a supplier of control arm shafts that are upgraded to the rubber bushing type? Most aftermarket stock style is all steel for 67-72. |
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#3 |
Registered User
Join Date: Jul 2010
Location: central michigan
Posts: 1,192
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Re: Upper A-Arm compatibility?
I was hoping to just bolt a 73-87 upper arm on
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#4 |
Moderator
![]() Join Date: Jun 2017
Location: Cherryville, NC
Posts: 2,162
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Re: Upper A-Arm compatibility?
Both early metal style and later rubber style arms use the same bolt spacing where they bolt on to the cross member...
I usually grab the entire cross member from a later truck, rebuild it on the bench jig then install it into the early frame. Hope this helps... ![]() ![]() ![]() ![]() ![]() ![]() |
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#5 |
Registered User
Join Date: Jul 2010
Location: central michigan
Posts: 1,192
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Re: Upper A-Arm compatibility?
So will the 73+ upper arm just bolt on to my stock setup?
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#6 |
Registered User
Join Date: Oct 2014
Location: Princeton Texas
Posts: 40
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Re: Upper A-Arm compatibility?
I used my factory 70 C-10 crossmember and used 82 control arms, upper and lower with no mounting issues. JUST be sure you get all the upper mounting washers with newer arms.
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#7 |
Senior Member
![]() Join Date: Jun 2002
Location: Murray, Kentucky
Posts: 3,409
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Re: Upper A-Arm compatibility?
They will work if you use the correct balljoint for the spindle you are using.
Rg
__________________
Roger '68 Short step - https://67-72chevytrucks.com/vboard/...d.php?t=849675 '69 ('70?) 2wd Blazer '70 GMC Jimmy 2wd |
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