8" or 9" how do u tell

J

jahen65

New Member

Sep 29, 2004

16

0

0

ontario

Apr 30, 2005

#1

• Apr 30, 2005

• #1

can anyone tell me how to know what kind of rear end i have, it is an open diff that unbolts from the front not the back. it is on a 65 mustang. any feedback will help thanks.

 

geostang351

Member

Mar 30, 2005

946

0

17

Danb., CT

Apr 30, 2005

#2

• Apr 30, 2005

• #2

they both unbolt from the front. usually the backsided has a bump in it for the ring gear, the 8" has a smooth backside

 

gbarber

Member

Jan 26, 2004

158

0

17

delaware, ohio

Apr 30, 2005

#3

• Apr 30, 2005

• #3

This is a pretty good site:
http://www.kevinstang.com/Ninecase.htm

 

1

10secgoal

Active Member

Dec 1, 2003

2,801

3

49

San Diego

Apr 30, 2005

#4

• Apr 30, 2005

• #4

you can't put a socket on the bottom two bolts with a 9in. An 8in you can.

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

6

0

south louisiana

Apr 30, 2005

#5

• Apr 30, 2005

• #5

geostang351 said:

they both unbolt from the front. usually the backsided has a bump in it for the ring gear, the 8" has a smooth backside

Click to expand...

And the early 9" rears did as well.

 

taylor4g63

Founding Member

May 6, 2002

921

0

0

Asheboro, NC

Apr 30, 2005

#6

• Apr 30, 2005

• #6

If you have to use a wrench to get to 2 of the nuts its a 9".

 

84convertablegt

New Member

Nov 6, 2004

589

0

0

Columbus, OH

May 1, 2005

#7

• May 1, 2005

• #7

what kind of engine do you have. if it is a c code car, most likely you have a 8 if its original, an 8" 2.79. 9" were rare and only in the higher end models. doesnt mean someone hasnt replaced it, but what other mods are done to the car