ok, I have used up my good units and now what i have left will need parts to rebuild them. Should I just buy a new unit or is the GM one better?
seventy2plus2 said
March 16th
I have an empty 4 series carrier on the shelf if that's of any interest.
CdnGMfan said
March 16th
Auburn for the Positraction unit, U.S. Gear for the Ring & Pinion if you can't find a GM part. That is what I have heard.
The Auburn is rebuild-able, while others like the True Trac are not.
65 SD L79 said
March 16th
Thanx Clint , I am gona have a better look on the shelves tomorrow
65 SD L79 said
March 16th
CdnGMfan wrote:
Auburn for the Positraction unit, U.S. Gear for the Ring & Pinion if you can't find a GM part. That is what I have heard. The Auburn is rebuild-able, while others like the True Trac are not.
Good info, I do have a number of 3.31 gear sets on the shelf
SGS Welding said
March 17th
Not sure if you want the aggressive Detroit Locker
but I LOVE mine!
If you decide to go this way check your lug nuts often! It will shake them loose!
DonSSDD said
March 17th
Eaton posis have a good name.
cdnpont said
March 17th
I have a Eaton Posi in my 67. Still puts down two perfectly even stripes, and never chatters in turns. Carbon clutches.
Always rebuildable if needed.
oshawacliff said
March 17th
cdnpont wrote:
I have a Eaton Posi in my 67. Still puts down two perfectly even stripes, and never chatters in turns. Carbon clutches.
Always rebuildable if needed.
I have witnessed those strips while being securely strapped in!
65 SD L79 said
March 19th
where would i find Eaton rebuild parts for sale?
cdnpont said
March 19th
Eaton. GM, Yukon?
As far as I know, the internals are all common to the 8.875" Passenger car posi.
Eaton adds some different carbon clutch discs and perhaps a different rate in the preload spring pack, but I believe it's all the same design.
I know the parts books list different pieces for the real early 12 bolts. It seems to me that the 66 and up 12 bolts are all the same though. I'm talking car diffs, no idea about the truck 12 bolts.
65 SD L79 said
March 19th
this is an original 3 series GM that blew up. slit the spider gears and tore up the spring pack. The carier its self looks good. its where its better to replace the parts or buy a new complete unit
Looks like a 3 series to me that had a bit of an accident.
65 SD L79 said
March 20th
digging through the garage i found a total of 2 - 2 series and 3 - 3 series carrier posi. none of them would be worthy of just sticking in the way they are so a new one is on the way. I also have a few B body complete rears with posi in them but i will leave them together.
cdnpont said
March 20th
You get what you pay for.
CdnGMfan said
March 24th
Ack! I said Auburn when I meant Eaton. Auburns are not rebuildable, the Eaton units are.
Sorry for the wrong info. Time to do some dusting, inside my head.
ok, I have used up my good units and now what i have left will need parts to rebuild them. Should I just buy a new unit or is the GM one better?
The Auburn is rebuild-able, while others like the True Trac are not.
Thanx Clint , I am gona have a better look on the shelves tomorrow
Good info, I do have a number of 3.31 gear sets on the shelf
Not sure if you want the aggressive Detroit Locker
but I LOVE mine!
If you decide to go this way check your lug nuts often! It will shake them loose!
I have a Eaton Posi in my 67. Still puts down two perfectly even stripes, and never chatters in turns. Carbon clutches.
Always rebuildable if needed.
I have witnessed those strips while being securely strapped in!
where would i find Eaton rebuild parts for sale?
Eaton. GM, Yukon?
As far as I know, the internals are all common to the 8.875" Passenger car posi.
Eaton adds some different carbon clutch discs and perhaps a different rate in the preload spring pack, but I believe it's all the same design.
Eaton Service Kit contents,
199554-010 is the 8.875" passenger car 3 series,
https://www.eaton.com/content/dam/eaton/products/differentials-traction-control/eaton-posi/eaton-posi-service-kits.pdf
I know the parts books list different pieces for the real early 12 bolts. It seems to me that the 66 and up 12 bolts are all the same though. I'm talking car diffs, no idea about the truck 12 bolts.
this is an original 3 series GM that blew up. slit the spider gears and tore up the spring pack. The carier its self looks good. its where its better to replace the parts or buy a new complete unit
I added it all up,
Summit,
Carbon Disc kit 29426-00S $311 Cdn
Described as 8.2/8.5" but the 8.875 is the same disc.
Gear service kit 29412-00S $473
Preload kit 400# 29590-00S $101
Choose 200, 400 or 800# pressure
$885 Cdn
Eaton posi unit, 8.875, 3 series 19554-010 $948 Cdn
Last time I bought one it was $598 Cdn! But I'd still be inclined to buy a new unit Kevin,
-
Tom's Differentials in Idaho will have everything you need.
https://tomsdifferentials.com/
-- Edited by seventy2plus2 on Wednesday 20th of March 2024 08:59:03 AM
digging through the garage i found a total of 2 - 2 series and 3 - 3 series carrier posi. none of them would be worthy of just sticking in the way they are so a new one is on the way. I also have a few B body complete rears with posi in them but i will leave them together.
You get what you pay for.
Ack! I said Auburn when I meant Eaton. Auburns are not rebuildable, the Eaton units are.
Sorry for the wrong info. Time to do some dusting, inside my head.