upper A-arms

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Me and Butch
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Joined: Thu Nov 10, 2016 10:09 am

upper A-arms

Unread post by Me and Butch » Fri Mar 17, 2017 4:24 pm

how does one tell the difference from the left and right upper and lower a arms, and is it possible to put it together on the wrong sides, what is the result......help :dontknow: !!!!!!

65 corsa
1965 Corsa Convertible
Bellevue Nebraska :chevy:

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wbabst
Posts: 215
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Location: Lake Stevens, Washington

Re: upper A-arms

Unread post by wbabst » Fri Mar 17, 2017 10:11 pm

The upper A-arm on the front suspension are Left and Right Handed. The shaft for the A-arm has to be installed with a certain orientation. If you look at the pictures of my upper A-arms you can see their handedness. So that you know the large external bushing goes to the rear on each side when installed. I hope my pictures help out somewhat.

Image

Image

Image
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61 Monza Cpe
61 Lakewood
62 Buick Special Conv


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Me and Butch
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Joined: Thu Nov 10, 2016 10:09 am

Re: upper A-arms

Unread post by Me and Butch » Sat Mar 18, 2017 5:17 pm

:helpsos: :helpsos: I'm confused, are these pics from an early model, mine is a 65 and all upper bushings are the same :helpsos: :helpsos:
1965 Corsa Convertible
Bellevue Nebraska :chevy:

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wbabst
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Location: Lake Stevens, Washington

Re: upper A-arms

Unread post by wbabst » Sat Mar 18, 2017 7:07 pm

My apologies, yes those are EM upper A-arms. I can only tell you from looking at my parts catalogue that the Upper A-arm assembly is handed, two separate part numbers. For 1965, Part # 3865962 Right, and 3865961 Left. Those are the part numbers for the Assembly with shaft bushings and ball joints. You might check with Clark's, they sell the assemblies overhauled and the tech guy may be able to tell you what specific feature makes it left or right and how you can identify which is which.
Current owner
61 Monza Cpe
61 Lakewood
62 Buick Special Conv


61 Progress here
https://www.facebook.com/pages/Chevrole ... 7898185672
https://www.facebook.com/pages/Goose-N6 ... 8869056897

Me and Butch
Posts: 18
Joined: Thu Nov 10, 2016 10:09 am

Re: upper A-arms

Unread post by Me and Butch » Sun Mar 19, 2017 5:48 am

:wave: thanks, I hope somebody chimes in today so I may move forward, again thanks for your help.
1965 Corsa Convertible
Bellevue Nebraska :chevy:

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acarlson
Posts: 125
Joined: Wed Nov 02, 2016 5:54 pm
Location: Dahlonega, GA

Re: upper A-arms

Unread post by acarlson » Sun Mar 19, 2017 7:41 am

According to California Corvair's, this is the handedness of the A-ARMS for an LM:
.
A-ARM.jpg
.
http://californiacorvairparts.com/2141- ... a-arm.html

Not sure if this helps or not...

Alec
1965 Regal Red Corsa 4 Speed Turbo Convertible

Me and Butch
Posts: 18
Joined: Thu Nov 10, 2016 10:09 am

Re: upper A-arms

Unread post by Me and Butch » Sun Mar 19, 2017 7:56 am

are these early model a arms.....my 65 arms do not have different bushing sizes :dontknow:
1965 Corsa Convertible
Bellevue Nebraska :chevy:

66vairguy
Posts: 1078
Joined: Tue Dec 21, 2010 3:44 pm

Re: upper A-arms

Unread post by 66vairguy » Sun Mar 19, 2017 8:53 am

The 65 bushings ARE the same on each side.
The "A" arms ARE DIFFERENT. It's subtle. This is why it's good to take lots of pictures BEFORE dismantling things.

The ball joint plane is different from the bushing shaft plane. When installed in the car the ball joint mounting surface should be in about the same plane as the car body rocker line. The "A" arm at the bushing shaft slants down from the front of the car towards the rear. Hard to describe, better to go look at another car.

I've probably got a picture, but no time to look now.

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acarlson
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Re: upper A-arms

Unread post by acarlson » Sun Mar 19, 2017 11:16 am

Me and Butch wrote:
Sun Mar 19, 2017 7:56 am
are these early model a arms.....my 65 arms do not have different bushing sizes :dontknow:
They are listed as 65-69 A-ARMS on the California Corvairs website.

Alec
1965 Regal Red Corsa 4 Speed Turbo Convertible

Me and Butch
Posts: 18
Joined: Thu Nov 10, 2016 10:09 am

Re: upper A-arms

Unread post by Me and Butch » Thu Mar 23, 2017 2:53 pm

::-): I found some old posts that cleared my questions, thanks to all that helped
1965 Corsa Convertible
Bellevue Nebraska :chevy:

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