Help decoding differential numbers
Thread Starter
Racer
Joined: Dec 2009
Posts: 347
Likes: 48
Help decoding differential numbers
The differential is out of a late '63 convertible.
The numbers on the front of the main case are 3899143. The date code on the side of the front nose of the casing is C 2. On the bottom of the casing is AWW 065 E 1.
The rear cover is 3830308 with GM4.
From some goggling, it appears that the rear cover is indeed off of the '63, however, I can not figure out what the main case came out of.
It does appear to be 3.08:1 based on turning the driveshaft input one revolution and counting the turns on the half shaft output.
Thanks in advance for the help!
The numbers on the front of the main case are 3899143. The date code on the side of the front nose of the casing is C 2. On the bottom of the casing is AWW 065 E 1.
The rear cover is 3830308 with GM4.
From some goggling, it appears that the rear cover is indeed off of the '63, however, I can not figure out what the main case came out of.
It does appear to be 3.08:1 based on turning the driveshaft input one revolution and counting the turns on the half shaft output.
Thanks in advance for the help!
Team Owner
Joined: May 2006
Posts: 37,649
Likes: 1,108
From: CA
The differential is out of a late '63 convertible.
The numbers on the front of the main case are 3899143. The date code on the side of the front nose of the casing is C 2. On the bottom of the casing is AWW 065 E 1.
The rear cover is 3830308 with GM4.
From some goggling, it appears that the rear cover is indeed off of the '63, however, I can not figure out what the main case came out of.
It does appear to be 3.08:1 based on turning the driveshaft input one revolution and counting the turns on the half shaft output.
Thanks in advance for the help!
The numbers on the front of the main case are 3899143. The date code on the side of the front nose of the casing is C 2. On the bottom of the casing is AWW 065 E 1.
The rear cover is 3830308 with GM4.
From some goggling, it appears that the rear cover is indeed off of the '63, however, I can not figure out what the main case came out of.
It does appear to be 3.08:1 based on turning the driveshaft input one revolution and counting the turns on the half shaft output.
Thanks in advance for the help!
I just looked in my GM parts book and cannot find that number for the main case...are you sure about the number as i cannot make it out from you photo?
The only "number" in my book is 3917861 for 63-72
It could be a latter case...
Thread Starter
Racer
Joined: Dec 2009
Posts: 347
Likes: 48
Ultimately I want to determine how beefy it is and how much HP it can handle!
Thread Starter
Racer
Joined: Dec 2009
Posts: 347
Likes: 48
