How to ID Rearend?
Racer
Joined: Jan 2009
Posts: 482
Likes: 0
From: Near Round Top (pop. 90) Texas
Dana 44.
If you mean ratio,
Standard was 3.70 there was an optional 3.36
If your trans has a 2.43 low gear then it was originally 3.70 ratio.
If your trans has a 2.64 low gear could be either 3.70 or 3.36 ratio
Remember that a PO could have changed the gears out.
If you mean ratio,
Standard was 3.70 there was an optional 3.36
If your trans has a 2.43 low gear then it was originally 3.70 ratio.
If your trans has a 2.64 low gear could be either 3.70 or 3.36 ratio
Remember that a PO could have changed the gears out.
Team Owner
Joined: Feb 2003
Posts: 54,137
Likes: 9,447
From: Sitting in his Nowhere land Hanover Pa
2024 C2 of the Year Finalist - Unmodified
2015 C2 of Year Finalist
put the car out of gear, put a mark on the drive shaft with the valve steam of the tire at the 12 o'clock. rotate the drive shaft and count the number of times the tire moves past the 12 0'clock
Safety Car
Joined: Sep 2005
Posts: 4,063
Likes: 104
From: Southeast, Tennessee
St. Jude Donor '09 thru '26
there is a code stamped into the bottom of the case. if you get it up in the air, there should be a two letter code stamped on the bottom of the case in front of the spring. if i remember correctly (and am not confusing years) it should start with the letter "O" and then be something like OM (3:36 i believe) or OK (that should be the 3:08 for the automatic applications). there is a post somewhere on the forum that has a link to all the codes. PM me if you can't find it i think i have all that in a file on one of my computers and i'll be more than happy to send it to you. (of course you realize you have a posi rear, i assume you are just looking for brand and gear info??)
Thread Starter
Intermediate
Joined: Nov 2010
Posts: 41
Likes: 0
From: EVERETT WA
Code stamped bottom of diffierential?
Ok got up under car rear differential it had (OH 151) & (W9E1) stamped on the bottom fwd of the spring....
there is a code stamped into the bottom of the case. if you get it up in the air, there should be a two letter code stamped on the bottom of the case in front of the spring. if i remember correctly (and am not confusing years) it should start with the letter "O" and then be something like OM (3:36 i believe) or OK (that should be the 3:08 for the automatic applications). there is a post somewhere on the forum that has a link to all the codes. PM me if you can't find it i think i have all that in a file on one of my computers and i'll be more than happy to send it to you. (of course you realize you have a posi rear, i assume you are just looking for brand and gear info??)
Melting Slicks
Joined: Sep 2004
Posts: 3,227
Likes: 671
From: Northeast
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