Re: [AMC-list] Differential number

[Ken Ames <ameskg@xxxxxxxxx>]

Stamping code letters started about 1970. Before that it was a tooth count. 
40 ÷ 13 = 3.0769... which rounds up to 3.08.
3.08 is a 6 cylinder size AMC model 15 diff. The equivalent model 20 would be
43/14 for 3.07:1

Ken


Quoting Joe Fulton <piper_pa20@xxxxxxxxxxx>:

> Chad,
> 
> Your car has a 3.07 to 1 axle ratio.   That's sort of an in-between gear:  
> highway friendly but still able to deliver some torque to the rear wheels.  
> 
> 
> If you have a tag, your car probably has the AMC 15 rear, right?  Normally,
> the 
> AMC rears had an alphabetic code stamped into the housing boss near the 
> passenger side axle tube (at the rear).  Joe
> 
> 
> 
> ----- Original Message ----
> From: "chadchadwick@xxxxxxxx" <chadchadwick@xxxxxxxx>
> To: amc-list@xxxxxxxxxxxxxxxxx
> Sent: Tue, January 25, 2011 12:31:59 PM
> Subject: [AMC-list] Differential number
> 
> Joe I checked  the defferential housing on my javelin  and i could'ent find a
> 
> number, but the tag is still there  it reads 13/40 does that help.  chad
> 
> 
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