57 Oldsmobile rear end?

How strong are these units? are positrac units available for them? any ideas?

 

My mom siad you should do an intro and a search since you are using her computer. They are a piece of drag racing history..................search gr***hopper and you will find. And get rid of the smart*** location in your profile.

 

GET 'EM Tman...that **** is funny.

KIRK will be all over his *** for workin on KIRK's turf!!!

 

Strong. 9.3 inch ring gear. Nobody I know makes a new posi unit for these rears. The 57's had no posi units and 57 & 58's have the less desireable 29 spline axles. 59-64 had the better 31 spline axles. You can bolt a 59-64 chunk into your housing and get new 31 spline axles or search for a super rare 58 posi unit with 29 splines. Lots of parts (axles,gears,bearings,spools & seals) are available from Fabcraft in Texas. They're also on ebay.

 

Like Tman said, drop the mom ****!

 

Once you get that Olds rearend done, you could paint a picture of Betty **** on the rear cover.

 

Pardon me for being direct last night, I am grouchy, have a cold you see.

Here is a tip since you are new here. IF YOU HAVE A QUESTION, ODDS ARE ONE OF THE 90,000 PEOPLE HERE ALREADY POSTED IT! The search function and tech archives are amazing. There are tips in the Q&A section.

 

perfect answer!

only addition would be to note that the later chunks bill bolt right in, but you will not find factory 31 spline axles because your rear end is not as wide. Fabcraft will know EXACTLY what you need and can set you up.

Filthy Frank on here used to own Sommers Bros. and he has some old inventory and may be able to ***ist.

 

I knew something was up...you really are just an 'ol softy!! Hope the cold goes away...

 

G***er 57 Hit the nail on the head. He is 100% correct on everythign he states. I put a 3:64 Posi unit in my 57 Olds out of a 64 Pontiac. I had Fabcraft make my axles. It works great.

 

gentlemen,
Im thinking about buying a 57 olds rear for my 55 bel air... I havent even seen it yet, so i dont know what gears or axles are in it.
Any idea on what a good price would be???
Thanks in advance for any suggestions

 

Finished paperwork at teh office, boss said go home and sleep it off today. My mom works in a Pharmacy and I remembered she said to try Mucinex, so I picked some up on my way home. Stuff is amazing! In two hours I started to feel human again!

 

well thanks for all the info but i just discoverd that my 57 "oldsmobile" rear is a 57 "chevy" damn

 

While the Chevy center section looks oval, the Olds/Pontiac is round.

 

Yet still no intro.... damn!

 

TMAN,Zicam is the good stuff for a cold. Hope you feel better.

 

Yep mines oval, and its got 17 spline axles. found a 9in ford 4.56s an a spool. it should do the trick.