8 3/4 posi

[1971 scamp]

Hi I have a question regarding 8 3/4 rear ends. Today I found a 8 3/4 rear end that appears to a posi unit, it is not the sure grip unit with clutches. I have never seen one like this before it is similar to an open carrier but has a different pin in it and I'm pretty sure it a posi. Has anyone ever came across one of these. Allan

 

[crackedback]

http://www.moparts.org/Tech/Archive/axle/13.html

 

[Lelo Dart]

Must be a Chevy.

 

[Snake]

I hear ya .:???:

 

[Bad Sport]

Hi I have a question regarding 8 3/4 rear ends. Today I found a 8 3/4 rear end that appears to a posi unit, it is not the sure grip unit with clutches. I have never seen one like this before it is similar to an open carrier but has a different pin in it and I'm pretty sure it a posi. Has anyone ever came across one of these. Allan

There are two types of suregrips. Clutch and the other is known as a cone type.

 

[mikebee]

it sux that chevrolet took the coolest name for spinning both tires....sire grip sure doesn't sound as cool.


we have no idea what you are talking about....need some pix op.

also i think the very first suregrips were detroit lockers.

 

[toolmanmike]

Here's a chart of the Mopar ones. The 8 3/4's have been around since 1957. Here is a great tech article about them: http://www.mymopar.com/Mopar8_75RearEndGuide.htm

 

[mikebee]

that's some good info,but i'm sure i read in an old book somewhere about a detroit locker being used in the very earliest 8.75 rears....i have a 4.10 that has a dl in it and it is a 983 or 985 housing and i think 58 ring gear.i pulled it out of an old truck...didn't look like it had been into as in no obvious signs,but it was old then too.

Here's a chart of the Mopar ones. The 8 3/4's have been around since 1957. Here is a great tech article about them: http://www.mymopar.com/Mopar8_75RearEndGuide.htm