Author Topic: 8 3/4 rear end (Read 1111 times)

kmyles · « **on:** April 06, 2010 - 03:03:36 PM »

Is it possible to get or build a diff with 321 gears?
I have a chance to buy one and the guy swears its a posi out of a 8.75. No carrier just the clutch sg with the gears. What should I look for?

ChallengerHK · « **Reply #1 on:** April 06, 2010 - 03:05:34 PM »

3.23 is a pretty common ratio and there shouldn't be a noticeable difference between the two.

kmyles · « **Reply #2 on:** April 06, 2010 - 04:17:34 PM »

So you can get a 8.75 with 321? How can I be sure it,s for a 8 3/4?

Chryco Psycho · « **Reply #3 on:** April 06, 2010 - 04:26:52 PM »

no 3.21 ratio in a 8 3/4 ever , possibly an 8 1/4 carrier with 3.21 gears

kmyles · « **Reply #4 on:** April 06, 2010 - 04:34:05 PM »

Is there a number or something stamped on it to verify? There has to be someway of telling if it's for a 8 3/4.

Chryco Psycho · « **Reply #5 on:** April 06, 2010 - 05:35:44 PM »

measure the ring gear diameter

kmyles · « **Reply #6 on:** April 06, 2010 - 05:43:24 PM »

One of the sg's dosen't have the ring and pinion. Is there a way to tell on just the sg?

Chryco Psycho · « **Reply #7 on:** April 06, 2010 - 05:46:22 PM »

you could measure the ID of the ring gear / OD of the sure grip but I don`t have one here to get a mearsurement from

Moparal · « **Reply #8 on:** April 06, 2010 - 07:07:08 PM »

Should be 12 bolts holding the ring gear on to the sure grip. and left hand thread, but I think most are.

Author Topic: 8 3/4 rear end (Read 1111 times)

kmyles

8 3/4 rear end

ChallengerHK

Re: 8 3/4 rear end

kmyles

Re: 8 3/4 rear end

Chryco Psycho

Re: 8 3/4 rear end

kmyles

Re: 8 3/4 rear end

Chryco Psycho

Re: 8 3/4 rear end

kmyles

Re: 8 3/4 rear end

Chryco Psycho

Re: 8 3/4 rear end

Moparal

Re: 8 3/4 rear end