Gears
Post Fiend
Joined: Jun 2003
Posts: 5,643
Likes: 8
From: NE Texas
On the door tag (on the door frame) there will be a space under "AXLE" with a number like 61 or an alpha/number like B5.
On the rear axle there should be a tag that tells you the size.
More than likely a Ford 10.50"
There's alot of info in the Sticky at the top of this page.
On the rear axle there should be a tag that tells you the size.
More than likely a Ford 10.50"
There's alot of info in the Sticky at the top of this page.
Posting Guru
Joined: Nov 2003
Posts: 1,931
Likes: 5
From: Allen, Tx
Or you can look at the sticker on the door jamb under "AXLE". Two numbers is an open diff, a letter and a number is a limited slip. The second character tells you the ratio. 1 is 3.73, 2 is 4.20, 3 is 4.30 so for ecample a C1 is a limited slip 3.73 and a 33 is an open diff 4.30. There are two tags on the right side of your rear diff, one is the oil weight requirement and the other is the axle ID tag. It read something like this:
3V 435H
3 L 73 10 5 3E06
Yours will probably have a 3S in the first position (Plant code in this case Sterling Heigths Michigan axle plant.)
The 435H is the axle model and revision.
The third item is your ratio. 3 73 is 3.73 obviously but there will be an L there if your axle is a limited slip. Without the L, it's an open diff.
The 4th item is the ring gear diameter, 10.5". The 5th item is the axle's build date, 3E06 means May 6th 2003. If your axle was made say March 24 2000, your code would be 0C24. Comprende?
3V 435H
3 L 73 10 5 3E06
Yours will probably have a 3S in the first position (Plant code in this case Sterling Heigths Michigan axle plant.)
The 435H is the axle model and revision.
The third item is your ratio. 3 73 is 3.73 obviously but there will be an L there if your axle is a limited slip. Without the L, it's an open diff.
The 4th item is the ring gear diameter, 10.5". The 5th item is the axle's build date, 3E06 means May 6th 2003. If your axle was made say March 24 2000, your code would be 0C24. Comprende?
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