Rear Ends 101

Olds64 · 09-17-2007, 03:53 PM

Hey Monzaz, if you could give us a rundown on different Olds rear ends that would be AWSOME! Include a couple of websites so we can do some reading too. I am definitely a NOOB when it comes to rear ends.

monzaz · 09-19-2007, 09:56 PM

Well I just about wrote a small book on the olds rear from 1957-1996 and it was all deleted upon a pm . How did that happen? I will give it a shot again tomorrow evening. Have a cold and tired. Talk tomorrow.

Here are some links to pass the time.

http://www.442.com/oldsfaq/ofdif.htm#Differentials

http://www.oldsmobility.com/reardiffs.htm

Jim

88 coupe · 09-20-2007, 12:27 AM

Quote:

Originally Posted by monzaz

........ and it was all deleted upon a pm ........

Compose it in your favorite word processor, save it, then log in, and "cut & paste" it into your post.

Quote:

http://www.442.com/oldsfaq/ofdif.htm#Differentials

Not known as the most reliable of sources.

Norm

Oldsguy · 09-20-2007, 05:01 AM

That happens to me sometimes too. I think the server times out. Norm has the best idea to save all that data.

monzaz · 09-25-2007, 08:19 PM

Yah I know. Some of the stuff i read was a bit off but I am not into starting with other sites...lol. Like the info on the 12 bolt olds stuff. people list it as 8.5 8.4 etc. Those diameter measurement mess up alot of people. The ring gear bolt pattern , ring gear bolt size and inner diameter make all the difference . Then there is the pinion shaft diameters.

The 8.2 10 bolt stuff really messes everyone up. 1965-1966? maybe 67 (which should be 12 bolt olds rear) But again all depends on date coding.
65-66 use the same gears as 1964-1972 pontiac gears and buick 1965 1966 too. 1.438 pinion shaft and 8.2 ring gear with 3/8 right hand fine thread bolts.

In 1968 most 8.2 rears went to 7/16 bolt left hand threrad. 12 bolt olds was 7/16 left hand thread and buick 8.2 which again has its own ring and pinion and does not even have support from any aftermarket source. At least the 12 bolt olds ' O ' type a-body rear does have Richmonds 3 gears sets to choose from.

I will try to compose something...but might as well put that on my own site. lol I am working on it everytime I get my nephew off from college. He designed the site in his spare time. I will do my best with the info. In the mean time please if you have any specific question ask away. Jim

09-17-2007, 03:53 PM	#1 (permalink)
Olds64 Landyacht Club President Join Date: Jul 2007 Location: Lawton, OK Posts: 1,070	Rear Ends 101 Hey Monzaz, if you could give us a rundown on different Olds rear ends that would be AWSOME! Include a couple of websites so we can do some reading too. I am definitely a NOOB when it comes to rear ends.

09-19-2007, 09:56 PM	#2 (permalink)
monzaz Senior Member Join Date: Jul 2006 Location: Richfield, Oh Posts: 85	rear info. Well I just about wrote a small book on the olds rear from 1957-1996 and it was all deleted upon a pm . How did that happen? I will give it a shot again tomorrow evening. Have a cold and tired. Talk tomorrow. Here are some links to pass the time. http://www.442.com/oldsfaq/ofdif.htm#Differentials http://www.oldsmobility.com/reardiffs.htm Jim

09-20-2007, 05:01 AM	#4 (permalink)
Oldsguy Administrator Join Date: May 2004 Location: Lees Summit MO Posts: 2,520	That happens to me sometimes too. I think the server times out. Norm has the best idea to save all that data. __________________ Dan '46 2 door

09-25-2007, 08:19 PM	#5 (permalink)
monzaz Senior Member Join Date: Jul 2006 Location: Richfield, Oh Posts: 85	rear diff links Yah I know. Some of the stuff i read was a bit off but I am not into starting with other sites...lol. Like the info on the 12 bolt olds stuff. people list it as 8.5 8.4 etc. Those diameter measurement mess up alot of people. The ring gear bolt pattern , ring gear bolt size and inner diameter make all the difference . Then there is the pinion shaft diameters. The 8.2 10 bolt stuff really messes everyone up. 1965-1966? maybe 67 (which should be 12 bolt olds rear) But again all depends on date coding. 65-66 use the same gears as 1964-1972 pontiac gears and buick 1965 1966 too. 1.438 pinion shaft and 8.2 ring gear with 3/8 right hand fine thread bolts. In 1968 most 8.2 rears went to 7/16 bolt left hand threrad. 12 bolt olds was 7/16 left hand thread and buick 8.2 which again has its own ring and pinion and does not even have support from any aftermarket source. At least the 12 bolt olds ' O ' type a-body rear does have Richmonds 3 gears sets to choose from. I will try to compose something...but might as well put that on my own site. lol I am working on it everytime I get my nephew off from college. He designed the site in his spare time. I will do my best with the info. In the mean time please if you have any specific question ask away. Jim

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