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rocket8843
12-15-2014, 06:58 AM
Is there a 12 bolt rear end that will bolt to a 57 2 door hardtop without changing the spring locations? I have a 55 posi-traction 353:1 currently installed but it has developed a whine.

NCW
12-15-2014, 07:22 AM
A direct bolt in, sadly, no. Spring pads are never our friends.

markm
12-15-2014, 09:31 AM
I agree with above, however some of the coblers on other board claim a 2nd gen Camaro perch local works on these cars. In that case hp 70 Camaros had 12 bolts. Camaro springs are wider and perch's are designed totally different. A second gen Camaro is also 61 inch wide rear as opposed to 60 in 55-57.

Bihili
12-15-2014, 02:49 PM
Is there a 12 bolt rear end that will bolt to a 57 2 door hardtop without changing the spring locations? I have a 55 posi-traction 353:1 currently installed but it has developed a whine.
As you may know, posi traction was not available in 1955 so someone has installed it.
Whine noise usually means a bearing is going bad.
Twelve bolt rear ends are hard to find and expensive.

Here is the repair manual:
http://chevy.oldcarmanualproject.com/booklets/57top30/5730smindex.html

A good place for parts:
http://www.tomsdifferentials.com/


(http://www.tomsdifferentials.com/)

markm
12-17-2014, 05:57 PM
I have never paid very much for a 12 bolt or a positraction carrier but I am always shoppimg.