jfr's 63swc

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!

jfr's 63swc

Maybe some photos will help with some replies!

66jack

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...

BKarol

my guess would be:

AW= 3.08

W= Warren plant

06= 6th day of year

5= 1975

E= Eaton

1= 1st shift

jfr's 63swc

Thanks for the response. The number is correct. From googling it, it appears it is out of a later '70s corvette. Trying to see if it might have been used in other cars as well.

Ultimately I want to determine how beefy it is and how much HP it can handle!

jfr's 63swc

Thanks for the response. Any idea how the "C 2" on the front nose (which I thought was the date) relates to the assembly date?