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| How to tell '73-up UCAs? https://slantsix.org/forum/viewtopic.php?t=37472 |
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| Author: | '74 Sport [ Sun Oct 11, 2009 9:16 pm ] |
| Post subject: | How to tell '73-up UCAs? |
I know the '73-up UCAs are the ones hunted for by those wanting to upgrade to disk brakes, but I don't know how to tell the difference in them vs. the earlier ones. Doesn't it have something to do with the size of the ball joints - what do I look for? Anything for me to measure so I will know? Jerry |
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| Author: | 2 Darts [ Fri Oct 16, 2009 8:48 pm ] |
| Post subject: | |
The difference is in the size of the ball joint in the upper control arm. The 73 +> A-body disk brake cars used the same ball joint as the 68-70 B-body cars. The tool catalogs say the size for the 66-72 A-body is 1.809 and the 73 +> disk brake is 1.915. |
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| Author: | '74 Sport [ Sat Oct 17, 2009 8:03 am ] |
| Post subject: | |
Thanks, man. I have two sets of UCAs that came in a pile of parts I bought. Comparing the two, I see what you described. The UCAs look the same; however, there is a significant difference in the ball joints. I appreciate the info, Jerry |
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