Trailing arms

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Sep 25, 2013 | 09:27 PM

SHARKBIT77

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Instructor

Joined: Mar 2013

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From: Cincinnati OH

Trailing arms

Are all C3 trailing arms the same? I have an 77 but would like to swap in a set of loaded 81s that only have a few miles on them. Seems like I remember reading something about the half shafts being different. Any help would be a appreciated.

Sep 25, 2013 | 09:37 PM

'75

Le Mans Master

Joined: Dec 2007

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From: McHenry Illinois

The trailing arms are the same, the yoke the outer end of the half shaft attaches to is different. Up thru 79 has a 4 bolt flange, 80-82 have a yoke that accepts u-bolts to hold the u-joint. You can swap your flanges on to the 80 trailing arms.

Sep 25, 2013 | 09:49 PM

Dodosmike

Le Mans Master

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From: Powassan ON

'68-'79. Example of 4 bolt flange.

Dodosmike

Sep 25, 2013 | 09:51 PM

SHARKBIT77

Thread Starter

Instructor

Joined: Mar 2013

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From: Cincinnati OH

If I swap my flanges over do I have to reset or check the bearings or the run out. I am trying to avoid this since I obviously don't know what I am doing?

Sep 25, 2013 | 09:58 PM

SHARKBIT77

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Instructor

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From: Cincinnati OH

I see the difference thanks for the pic. Same question can I swap that flange with out doing anything else? Thanks for the help.

Sep 25, 2013 | 09:59 PM

Dodosmike

Le Mans Master

Joined: Apr 2008

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From: Powassan ON

I'd think getting them off might be a challenge. I think they're pressed on.
Might be easer to swap half shafts.

Others will chime in I'm sure. Sorry not much help

Dodosmike

Sep 25, 2013 | 10:24 PM

MakoJoe

Burning Brakes

Joined: Apr 2013

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From: Castle Rock CO

I am no expert but in the near future I am going to be rebuilding my entire rear suspension on my 1977 and have done quite a bit of research on the parts I need and want to buy for my rebuild since I will be doing it myself. This is link for a new trailing arm expensive yes which is why I will tear mine down and rebuild it myself. Ecklers and other online resources will send you a rebuilt trailing arm for half the cost with a core charge Model years covered are 1968 Through 1982. The half shafts are different and the U-Joints can be different during these model years depending on L82 and Big Blocks but in the L48 engines in my research pretty consitant for most of the parts. I will be buying tools for my rebuild. Some sites will rent the tools you require for the work your about to perform. I also bought some books on it. This book gives me some details