Title: Message
John,
 
It's been a while since I replaced the rearend in my '70, but I remember running into the same problem you describe, even though I used stock control arms.  I believe I ended up grinding a little material off of the control arm.  On the picture from the front, you'd be grinding in the 7 or 8-o'clock area, and on the back picture, in the 4-5 o'clock area. 
 
Although if I had bought aftermarket units like yours, I'm not sure I'd want to do that without checking with the vendor first.  Be glad you don't have the body getting in the way.  :-)
 
-Dave
 
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of John Usher
Sent: Friday, November 07, 2003 9:21 AM
To: [EMAIL PROTECTED]
Subject: [Chevelle-list] Currie upper control arms don't fit

I recently bought the currectrac upper control arms for my 69 Chevelle SS with a 12 bolt rear with 3.73 gears. When I tried to install them I ran into a problem in that the casing on the differential that is on the driver's side is closer to the bushing mount than on the passenger side. This means that the currectrac control arm doesn't fit this bushing mount since its tab interferes with the differential case so the holes don't line up.

I hope I have explained this appropriately.

The differential case is not symmetrical so the clearance available on one bushing is the not the same as the other. Is this true of all 12 bolt housings? These were suppose to fit. 
 
Any ideas what is going on?  
Here are some pictures  at the links:
 
 
 
 
John Usher
Starkville, Mississippi

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