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Old 03-03-2017, 02:05 AM
michael j michael j is offline
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Default Spot weld

I have a 74 trans am and I am wondering why is nut on the upper a arm shaft
spot welded to the shaft. I think I read something about this on these forums but can't find it. Thanks

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Old 03-03-2017, 09:53 AM
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77 Canamman 77 Canamman is offline
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This was touched upon in NJSteve's thread on his 1975 Firebird.

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Old 03-03-2017, 06:02 PM
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Here you go: http://forums.maxperformanceinc.com/...664082&page=16

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Old 03-04-2017, 01:59 AM
michael j michael j is offline
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Gentlemen thank you all for the service bulletin, pictures and instructions. Like always, this site is tops for information.

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Old 03-04-2017, 11:46 AM
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I had a 74 GP years ago that had welded nuts. I went to replace the bushings, having no idea the nuts were welded (the control arms were caked with grease). I used a large breaker bar and was able to break the nuts loose, but no matter how much I turned them they wouldn't come off. That's when I discovered the spot welds. I then cut the shaft and replaced them. If I was doing the job now, I would have cleaned the parts, and noticed the welds lol.

I always wondered who would have welded them and why.....now I know.

Importsmasher

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Old 03-04-2017, 12:57 PM
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I love learning new trivia about these old birds.

BTW, I bought the new AC Delco bushings and center bar with the offset to allow for more camber adjustment. I installed them with the offset facing toward the wheels and brought it to the alignment shop. The car did not need a single adjustment shim! It was exactly in spec with just the new offset bars alone!

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Old 06-13-2022, 10:19 PM
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Digging up an old thread....

Both upper A arms have a spotweld on one end of the shafts on my 74 TA. I have the A arms off the car to replace bushings, ball joints etc.

I see mention in the 75 service bulletin (see above) of a 'procedure' on page 3-25 of the 75 Service Manual - does anyone know what that procedure is?

What is the best approach here - or should I just buy new shafts and replace them?

TIA!

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