Differential id help
Thread Starter
Racer
Joined: Oct 1999
Posts: 459
Likes: 7
From: Cheshire ORE
Differential id help
Need a little help here guys. Purchasing a differential to install in my 64 for a long trip across the USA next month. Have a 4:11 with a six speed in the car now and want to install a 3:08 for the trip. The differential I am looking at to purchase has the following info and what I need to know is will this unit work in my 64? My 53 to 71 GM parts book is of little use in deciphering the #s on this unit. So here is the info off the differential.
Diff housing stamp-AWW 158 EI.
68-69 & 71 have this AW for a 3:08 posi HD unit. 71 is not an HD diff but has the AW for the 3:08 code.
Cast #3899143
Date E 28 5 (1975?)
Cover cast # 3871375
Date A 8 5 (1975?)
Axle Yoke-3872923 with bolt on caps
Pinion yoke has bolt on U joint caps
Carrier unit-Eaton # 32287PM1
Ring gear # 3756448 GM 12 37 5 75 1
What do I have here and will it do the job in my 64?
Thanks
Billy
Diff housing stamp-AWW 158 EI.
68-69 & 71 have this AW for a 3:08 posi HD unit. 71 is not an HD diff but has the AW for the 3:08 code.
Cast #3899143
Date E 28 5 (1975?)
Cover cast # 3871375
Date A 8 5 (1975?)
Axle Yoke-3872923 with bolt on caps
Pinion yoke has bolt on U joint caps
Carrier unit-Eaton # 32287PM1
Ring gear # 3756448 GM 12 37 5 75 1
What do I have here and will it do the job in my 64?
Thanks
Billy
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,926
From: Washington Michigan
Need a little help here guys. Purchasing a differential to install in my 64 for a long trip across the USA next month. Have a 4:11 with a six speed in the car now and want to install a 3:08 for the trip. The differential I am looking at to purchase has the following info and what I need to know is will this unit work in my 64? My 53 to 71 GM parts book is of little use in deciphering the #s on this unit. So here is the info off the differential.
Diff housing stamp-AWW 158 EI.
68-69 & 71 have this AW for a 3:08 posi HD unit. 71 is not an HD diff but has the AW for the 3:08 code.
Cast #3899143
Date E 28 5 (1975?)
Cover cast # 3871375
Date A 8 5 (1975?)
Axle Yoke-3872923 with bolt on caps
Pinion yoke has bolt on U joint caps
Carrier unit-Eaton # 32287PM1
Ring gear # 3756448 GM 12 37 5 75 1
What do I have here and will it do the job in my 64?
Thanks
Billy
Diff housing stamp-AWW 158 EI.
68-69 & 71 have this AW for a 3:08 posi HD unit. 71 is not an HD diff but has the AW for the 3:08 code.
Cast #3899143
Date E 28 5 (1975?)
Cover cast # 3871375
Date A 8 5 (1975?)
Axle Yoke-3872923 with bolt on caps
Pinion yoke has bolt on U joint caps
Carrier unit-Eaton # 32287PM1
Ring gear # 3756448 GM 12 37 5 75 1
What do I have here and will it do the job in my 64?
Thanks
Billy
Thread Starter
Racer
Joined: Oct 1999
Posts: 459
Likes: 7
From: Cheshire ORE
