Inliners International Forums General Discussion Drive Train 12 Bolt Ring & Pinion

I am looking for a real tall ring and pinion for a 12 bolt. Could be out of truck or car. Looking for something in the 2.20’s or 2.30’s for a LSR project. I have 2.41’s but need taller, or if some one can point me to a shop or person that can make a one off set.

Have you checked with Randy's ring and pinion?

Thanks for the info. But I have tried just all of these guys. I think I will have to make the gear, anybody know a shop or person that can do this?

There is a shop in Omaha that specializes in designing and making gears but they may not be able to do hypoid. Give me a day or so and I'll get you a contact. The most practical would be to find a different rear which originally offered the ratio you are after.

Some of the ’72-'76 Cadillac Deville’s with the 500 CI engine had a 2.29.1 12 bolt. But most of the junkyards are too lazy or wont go check. If I could find one of those would be great.

I have a rearend out of a 79? Cadillac Seville with a 2.25 or 2.29 ratio. It has disc brakes. Probably cost more to ship than it's worth though. If you're interested, let me know. Joe

Is it a 12 bolt or 10 bolt? If its a 12 bolt I am interested.

What part of Northern California are you in? there is a guy that has an old junk yard with a ton of stuff. He is in Cloverdale.

I am in the San Fran bay area. None of the junk yards want to take the time to look for the gears. Its a small margin part for them.

Try Gevos Rears and Gears. I believe they are in NY, Conn in the Northeast Found son 2.56 Pontiacs for my LSR project a few years back. J.D.

Find out what year and make the rear end came in, and then call Dorris auto wreckers, or The Rear End Shop.

I don't know about the ring gear,but car and truck 12 bolt pinion gears have a different shaft diameter,the truck on being smaller in diameter.2.70 ish gears are available for the truck 12 bolt,but not all that common.

The truck 12 bolts will work with a different bearing; I have a set of 2.49 out of a truck set up this way. Because I am running a 23” tall tire I need to be around 2.18. I heard that some Cadillac’s came with this gear. If I cant find the gears I will have to make my own rear end to get the tall gears I need.If I do that I can gol tall as 1.55. I already did the drawings for it, but want to find something off the shelf before building it.