Upper control arm bushing extra part?
So... I'm not sure if a 74 e body with a 360 would be considered a high performance model but I do know that those sleeves were not on it when I did my front end. I will be looking at my 68 to see if it has them. After watching the video, I'm thinking they are necessary. Hopefully I'll finally get to my disc brake upgrade this winter.
When I replaced the bushings on my Dart's UCAs I noticed the collars/sleeves only on the rear bushings, which were still in good shape but the front bushings were both shot.
I could not notice any significant difference in my manual press when pressing the front and rear new bushings on the UCAs but probably the front had a reduced grab due to having the bushings replaced a few times before (the old front bushings did not appear to be loose before disassembly but I had some of that noise occasionally).
The contact area between the UCA and the bushing is small and if it is a bit worn out it could allow some movement and then develop an even worse problem.
This happened in my case after driving only about 60 miles after replacing the bushings.
Due to the UCA moving on the front bushing back and forth as seen in my video, it squeezed the bushing pretty bad becoming loose.
I removed both UCAs and ordered new bushings to replace them. Also found a standard size steel pipe that seems to be the same size as the factory collars (so I can cut the pieces and make the collars).
I will now check if the UCA need some weld filling to get to it's original diameter in the area where the bushing is pressed but they do not seem to need much.
I think if I had pressed the collars on the front bushings too in the first time, they'd be fine now, avoiding having me doing this again.
For me they are a good preventative measure specially on old/used UCAs.
Another important detail is checking if the UCAs are bent due to running loose on the bushing. Mine need to be pulled apart about 0.20" to go back to speck so they will fit in the mounts without having a fight.
Just my person opinion.
