9" rear id tag info..

[ChevyMan1972]

Help,

 

Googled could not find anything about mine... Here is what it say's on it..

 

WDC - CA5 3CA

2.75 9 040A

 

Any info would be great!!!

 

Thanks,

Dan

[flyinbrian]

According to this link I saved-

 

http://www.kevinstang.com/Ninecase.htm

 

3CA is the date code. 3=1963, C=March, A=1st week of the month.

2.75 is the ratio. If it had an "L" between the 2 and the 75 the rear would have a trac-loc.

[ChevyMan1972]

Now how do I figure out which axles I have 28 or 31 spline, without taking it apart? I know that the axle flange has 3 acess holes for the c clip does this help?

[Guest Removed]

if its a car. its more then likely 28...and they all have 4 holes.

 

you need to know if its small or large flange.

http://i5.photobucket.com/albums/y196/gearhead559/diagram.gif

small flange = 28's. large could be either.

[flyinbrian]

There are no C-clips in a 9" Ford rear.

Unbolt the four bolts pictured above by Gearhead and yank an axle to see what you have. It takes no time to do.

 

Being a 2.75 open rear I'd just about bet the farm you have a 28 spline.

[ChevyMan1972]

Found....

 

Pulled out the axles and 3rd member, someone changed the ring and pinon to a 3.73, but it looks like it's an open rear, also 28 spline axles..

 

Everything is going to Babbit Bearing today for an upgrade. Also changing the lug pattern to 5 on 4 1/2" so I can get some good wheels!!!

 

Thanks for all the info!!

 

Daniel