[MDot]

i have a rear end from a regal t-type that seams to be posi-trac, can anyone tell me what i have? the numbers on the left shaft are: 2 AJ C030 2. the number on the housing is 22507717, and also a 4A 21 on the housing unit. Can anyone plaese help me?????

[cobalt327]

Could be a '78-'79 2.41:1 non-limited slip (peg leg).

Take a look for the code "AJ" HERE.

A non-L/S diff will spin both tires if loaded evenly, FWIW.

[cranky1]

Preloading the chassis will usually make a non posi rear act like a posi. I used to do it with air shocks with a seperate line kit with 10 psi in the left and 35 in the right or you can crank up the left front torsion bar a bit or both...at least with a Mopar you can do that. Non posi rears smoke the right side tire because the rear actually torques over counterclockwise and tries to lift the right side tire....

[fast68]

if you get the stamping code off the pass side axle tube with sandpaper and a flashlight then you can call the local chevy parts counter and tell them the code and vehicle and they will look it up for you.

or just pull the diff cover and look.

ratio will be stamped on the outer edge of the ring gear somewhere if are gm gears. it will look like this: 41:11

welcome to HR forums

good luck

[MDot]

here we go guyz, i have another number, please tell me what i have. CB 1227 B its on a 69 malibu chevelle

[SSedan64]

Originally Posted by MDot

here we go guyz, i have another number, please tell me what i have. CB 1227 B its on a 69 malibu chevelle

3.36 Open
http://www.chevellestuff.com/1969/rear_axle.htm

[SSedan64]

Originally Posted by MDot

i have a rear end from a regal t-type that seams to be posi-trac, can anyone tell me what i have? the numbers on the left shaft are: 2 AJ C030 2. the number on the housing is 22507717, and also a 4A 21 on the housing unit. Can anyone plaese help me?????

http://tech.oldsgmail.com/axle_useage.php

[plymduster73]

I work at a scrap yard and often work with people with their own salvage companies. My boyfriend is restoring a 73 duster and i know he would love a dana 60. I asked a man recently if he comes across them and he says the Ford 9" is the same exact thing and that it would work? As you can tell, I don't know much about cars I'd love to surprise him, but I'd like it to actually be right

[SSedan64]

The Dana 60 is nothing like a Ford 9" rear. He must have been thinking of a 8-3/4" Mopar rear. Dana 60 is built like a GM 12Bolt, has removable rear cover. The 9" & 8-3/4" have removable front sections for easy gear swaps.

[MDot]

Thankx 2 all that make this site what it is. I really am greatfull...

[1957plymouthhemi]

Not to hijack the thread, but plymduster73 I'm sure what your boyfriend is after is a MOPAR passenger car style Dana 60, which are relatively rare and expensive. There are a lot of Dana 60s out there but the majority of them are under trucks and have full floating rear axels and big drums which are not really suitable for the Duster. Just something to look out for when someone tells you they do have a Dana.

[cranky1]

Yup, passenger car Dana 60's are pretty hard to find but sometimes you run across a truck housing in a wrecking yard that's already picked over and only the housing is left. Those can be had pretty cheap but you will still have to cut off the truck ends and weld on new bearing ends for a car, weld on new spring pads in the correct spot, buy axles, gears, spool or SureGrip etc. It gets pretty expensive but buying one from a car and then rebuilding it will be even more expensive. One more tidbit about a truck housing is that it won't have a pinion snubber mount. That's not a problem if you are like me and don't use them anyways. Btw, anything more than 50 bucks for an empty truck 60 is too much imo. 1957, the thread took a left turn a good ways back lol