12 bolt rearend question

mike britt · 11-05-2016, 08:52 AM

I'm looking at a Oldsmobile 12 bolt for my stocker. It has a smooth cover on it. I've never seen a 12 bolt with a smooth cover. Is it the same as a chevy?

Jim Kaekel · 11-05-2016, 09:00 AM

You may be referring to an "O" type rear that was made from '68-'70, commonly found in 4-4-2's, Cutlass, etc. in those years. It has a smooth, 12-bolt cover and a 10-bolt carrier. There are no spools, aftermarket axles, etc. available for it, so it would not be a good choice for a race car. If it is a limited slip style and has 3.42 or 3.91 gears, it would be fairly valuable to an Olds enthusiast and you could easily get good money for it and then buy what you need, a 12-bolt Chevy.

mike britt · 11-05-2016, 09:04 AM

Thanks Jim. Just the answer I was looking for. I don't need to get stuck with anything else I can't use.

11-05-2016, 08:52 AM	#1
mike britt Member Join Date: Mar 2013 Location: Italy, Texas Posts: 176 Likes: 374 Liked 66 Times in 31 Posts	12 bolt rearend question I'm looking at a Oldsmobile 12 bolt for my stocker. It has a smooth cover on it. I've never seen a 12 bolt with a smooth cover. Is it the same as a chevy?

11-05-2016, 09:00 AM	#2
Jim Kaekel VIP Member Join Date: Jul 2002 Location: Michigan Posts: 1,229 Likes: 133 Liked 535 Times in 110 Posts	Re: 12 bolt rearend question You may be referring to an "O" type rear that was made from '68-'70, commonly found in 4-4-2's, Cutlass, etc. in those years. It has a smooth, 12-bolt cover and a 10-bolt carrier. There are no spools, aftermarket axles, etc. available for it, so it would not be a good choice for a race car. If it is a limited slip style and has 3.42 or 3.91 gears, it would be fairly valuable to an Olds enthusiast and you could easily get good money for it and then buy what you need, a 12-bolt Chevy. __________________ Jim Kaekel 3836 STK

11-05-2016, 09:04 AM	#3
mike britt Member Join Date: Mar 2013 Location: Italy, Texas Posts: 176 Likes: 374 Liked 66 Times in 31 Posts	Re: 12 bolt rearend question Thanks Jim. Just the answer I was looking for. I don't need to get stuck with anything else I can't use.