Thread: Rear End Help

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I am building a 1923 T Bucket from Total Performance, but i am using a rear end that i have laying around. Its an 8.5 10 bolt. It has GMC stamped on the ring gear and everything looked original inside. I rebuilt the whole rear except I cant find axle bearings for it anywhere. The seals i found, but the rear end is not a typical GM rear i dont think, this one does not have c-clips but i dont think there is an eliminator kit on it. I just think it came stock this way, there are four bolts that mount just behing the backing plate. The bearings i pulled out were different on each side. I work at a pep boys and tried crossing the numbers but i am getting nothing. I went to two bearing shops around my area and i couldnt find anything either. The rear end is a coil spring rear end, 5 lug, 8.5 ring gear, 10 bolt. Its got press on bearings and a collar that helps make sure the bearing stays in place, the seal is a double lip seal, which i found already. The housing itself had these numbers on it: 96, 1235197, CFD?, and 10. I dont know if that can help me find out what the rear end is from or not. The bearings have these numbers on them: BOWER R 1578 F and the other one was U1978ZJJ? I called Bower, which is now BCS and they didnt have a cross reference for that number. Any help anyone can offer will be great, i am so desperate to find these bearings. Thanks, Mike

i think you have a olds or buick diffy there , i read somewhere that they have press bearings like you describe. Can the bearing shops match one up by dimension if you press one off and bring it to them? you may have fun finding bearings

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

No they cant i took one off and they measured them and couldnt match them up that way, this sucks, i am waiting on this to be done so i can go cruising and now i am stuck with this damn bearing problem!

Try contacting Richmond gear, they may have a master rebuild kit for it.


You might also try Napa autoparts.

Yeah i tried napa autoparts, they cant get them, i will have to try richmond i guess, this just sucks, i have the dimensions, 35mm inside 65mm outside, and about 17mm width. Its a cylinderical roller bearing, NOT tappered, with a sleeve inside to be pressed on with a locking ring to hold it into place.

I think I know what bearing you are talking about,just did a quick scan out in the garage and didn't locate it. The rear was a 68-69 buick and I was told the canadian rear. My brother found me replacements out in the mid-west,from what I remember as the Old Car Bearing Co. If I find the bearing ,it's yours, don't count on it too much,it has been at least 15 yrs. Hank

You may be in luck,I've got two sets of axle bearings, NDH [DELCO] #RW507RR, andRW507CR, the cr is 2 3/4 in dia, 5/8 w, for approx 1 3/8 shaft, retainer approx 1 15/16, and 9/16 thick , the rr is same od ,13/16 w, and the retainer is smaller,being only about half as thick. Do these sound like yours? Hank