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#1
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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 |
#2
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This was touched upon in NJSteve's thread on his 1975 Firebird.
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1976 LeMans B09 Freeway Enforcer, 455/M40 Smokey 1977 Trans Am, 400/M21 Black/Gold Bandit. 44K actual miles 2017 Sierra SLT 1500 Z71 4X4 2019 Canyon SLT Crew 4X4 |
The Following User Says Thank You to 77 Canamman For This Useful Post: | ||
#3
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#4
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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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#5
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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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Scott Baggiore 66 GTO convertible 389/4 speed (parents bought new) 73 Firebird Formula 400/4 speed 74 GTO 455/4 speed 74 Grand Am |
#6
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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! |
#7
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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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Peter 1974 Trans Am, 400 4-speed, 3.42 rear. |
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