C2 - Upper Control Arms

[Donald H.]

I bought a really nice pair of upper arms off Ebay about a year ago. They have very nice ball joints and boots. I am intending to use them on my 66. The ones off my 66 are not nearly as nice, plus they have the wrong cross shaft with square areas around the mounting bolt hole instead of the round.

As I recall, they were advertised as 63-82 corvette. Before I go to the trouble of restoring these, I want to be sure they are correct. Were the upper A-Arms the same across the C2s and C3s?

The first picture show the Ebay purchase on the left and the one I just removed off my chassis on the right. They look the same to me. But I'm to much a novice to be sure.

The second picture is a close up of the rivets on the one that I removed from my chassis, and the third picture is of the rivets on the Ebay purchase. They are much different. The ones off my car are more typical of what I have seen with a somewhat convex shape when it was set. The Ebay one looks much different.

Did Chevrolet/GM change the style of riveting these in the later years?

Thanks,

DonDSC_0133.jpgDSC_0134.jpgDSC_0135.jpg

[Gene M.]

Re: C2 - Upper Control Arms

Over the years I've seen both rivet head peen. And some that are almost round too. Did you know that full size chevy and 64-72 vette shared the same A arms?

I would be cautious of used ball joints. They could look fine but be loose when installed.

[Donald H.]

Re: C2 - Upper Control Arms

Over the years I've seen both rivet head peen. And some that are almost round too. Did you know that full size chevy and 64-72 vette shared the same A arms?

I would be cautious of used ball joints. They could look fine but be loose when installed.

Thanks,

The ball joints are very stiff. The A-Arms look to be very lightly used. Not sure what they came from, but they have little to no rust and the Paint is almost all there in in good shape. So, I don't think they had much use.

Is there any other way to check them? I may have to forget it anyway. I ripped one of the boots today.

Thanks,

Don

[Gene M.]

Re: C2 - Upper Control Arms

Don
No movement when you build the front end is good. If they are bad the guy will know when you get the front end aligned.

[Tony S.]

Re: C2 - Upper Control Arms

Don, not all '66's had the round cross shafts. There was a transition during the '66 model year from the square to rounded. What's the build date of your car? Tony

[Joe L.]

Re: C2 - Upper Control Arms

I bought a really nice pair of upper arms off Ebay about a year ago. They have very nice ball joints and boots. I am intending to use them on my 66. The ones off my 66 are not nearly as nice, plus they have the wrong cross shaft with square areas around the mounting bolt hole instead of the round.

As I recall, they were advertised as 63-82 corvette. Before I go to the trouble of restoring these, I want to be sure they are correct. Were the upper A-Arms the same across the C2s and C3s?

The first picture show the Ebay purchase on the left and the one I just removed off my chassis on the right. They look the same to me. But I'm to much a novice to be sure.

The second picture is a close up of the rivets on the one that I removed from my chassis, and the third picture is of the rivets on the Ebay purchase. They are much different. The ones off my car are more typical of what I have seen with a somewhat convex shape when it was set. The Ebay one looks much different.

Did Chevrolet/GM change the style of riveting these in the later years?

Thanks,

Don[ATTACH=CONFIG]60184[/ATTACH][ATTACH=CONFIG]60185[/ATTACH][ATTACH=CONFIG]60186[/ATTACH]

Don------


1963-82 UPPER control arms were the same.

[Joe L.]

Re: C2 - Upper Control Arms

Over the years I've seen both rivet head peen. And some that are almost round too. Did you know that full size chevy and 64-72 vette shared the same A arms?

I would be cautious of used ball joints. They could look fine but be loose when installed.

Gene------


The full size Chevy passenger car arms that were the same as 63-82 Corvette were only the 1958-64 upper control arms. However, the 1958-62 passenger car upper arms were of a different part number but interchangeable with the 63-64 passenger car and 63-82 Corvette.

The 1958-64 passenger car arms were not exactly the same as 1963-82 Corvette. They were very similar but there was some difference. I do not know what the difference was, though.

[Donald H.]

Re: C2 - Upper Control Arms

Don, not all '66's had the round cross shafts. There was a transition during the '66 model year from the square to rounded. What's the build date of your car? Tony

My car is a July 66 build. Very late. I'm assuming some where along the line someone put in the square shafts.