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-   -   ford 9 inch, axle spline count ID ? (http://www.hotrodders.com/forum/ford-9-inch-axle-spline-count-id-221292.html)

scfalk 07-04-2012 10:59 AM

ford 9 inch, axle spline count ID ?
 
hey everyone,I was wondering if anyone can tell me how to identify if an axel is 28 or 31 spline without taering it apart. Is there some outside marking that can tell you this? I believe it came out of a seventies pickup the tag reads2-75-9-844a which I think is ratio and ring gear size and whatever else.

OneMoreTime 07-04-2012 01:02 PM

Ford Rear Axle Assembly Identification - Page 01 - FORDification.com

Hope fully this will help you puzzle it out..

Sam

big gear head 07-05-2012 08:27 AM

The only way that I know of is to remove an axle. The tag says that you have a 2.75 gear in a 9 inch rear end.

scfalk 07-06-2012 07:36 PM

9 in axels
 
thanks for the info.I bought this rear end without really checking it out first.Found out its to wide for a model a.

big gear head 07-06-2012 07:47 PM

Narrow it. Have a chassis shop narrow the rear end to exactly what you need. The 9 inch is one of the easiest rear ends to narrow because usually you can respline the axles that you have and use them again. I don't recommend this for a high performance car, but for a cruiser it's just fine.

How wide does the rear end need to be?

scfalk 07-07-2012 08:17 PM

9 in rear end
 
I need it to be around 50 inches between backing plates.

S10 Racer 07-07-2012 09:58 PM

Quote:

Originally Posted by big gear head (Post 1571483)
The 9 inch is one of the easiest rear ends to narrow because usually you can respline the axles that you have and use them again.

Agreed but only if the axles are not tapered.


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