The Stovebolt Site Forums The Shop Area General Truck Talk What rear differental gasket?

I'm replacing the rear gasket on my 1952 Chevy 3100 differential its a 12 bolt and looks to be the origanal one. The gasket is close to round but has two bud like things on either side. So my question is does anyone know what model this rear end is or what kind of gasket does it use because I've right stumped the people at NAPA. Thanks for the help

Use rtv sealant. I like the black kind.

You can get a differential gasket from one of the internet parts houses that supply parts for these old trucks. I got mine either from Chevy Duty (American Classics now, I guess) or Jim Carter Classic Trucks, can't remember which now. I finally got around to replacing it a couple of moths ago. I just used a little bit of assembly grease and made sure that I had all of the garbage cleaned of the two surfaces of the differential housing before I put it in. holding tight so far.

Hy Thrift Master, according to my FEL-PRO catalogue the factory gasket is P/N RDS 4305, but that gasket only has 10 holes in it, are you saying that your diff. is retained in the axle housing by 12 bolts, or are you refering to the number of bolts which retain the crown gear to the carrier?

Rtv won't care how many holes. One size fits all.

Ok boys and gals, here is an old twist on this gasket thing. If you can't have the gasket you need and no rtv around but you need to finish the reseal. Use string!!! Yes kite string!!!!!
just clean you surface install the cover loosely with all the bolts and wrap string around all the bolts between the 2 sealing surfaces 3 full wraps will do. Then tighten them down. Badabing sealed till you can get the right gasket or rtv.

Hey, Thriftmaster, I read the desciption of your truck in the gallery. You mention that the engine has been changed. It could be possible that the rear has been changed as well. Does it still have the closed drive shaft, or is it open? If it's an open drive, then the rear has been changed, and may be a later 12 bolt differential. If you can post a picture of the housing and/or the cover, we may be able to ID it for you. The flaps should be able to match it up in their gasket catalog, most of them have pictures of the gasket shape with the listings.
Tiny, never heard the one about using kite string, sounds interesting. Have you used it yourself?

I should have also mentioned, just buy a sheet of the gasket material and cut your own, that's how my grandfather frequently did it.

USE
High Temp Black silicon RTV sealant

no gasket
make sure you get the sealant round all those holes.

see: identifaction of :::::::

covers .... http://www.wilcap.com/diffs.htm
decoding info .....http://www.nastyz28.com/decode.html
http://coloradok5.com/axleguide.shtml
http://www.novaresource.org/axle.htm

toyvo..... i used to do that w/ old harley's for road side repair.

I used gasket sealer on the cover. But on the actual third member it leaked (just my sealer ability I guess), no need to buy actual gasket sheet, use single-ply carbboard. The stuff ocereal boxes are made of and such. Worked well for me.
Good Luck.

It turns out that my engine hasn't been changed I doni't believe as my truck is a 1952 not a 50 as I origannally thought. Anyway where would I find the number on the axel or differential to figure out which model it is.

Thanks for the help I found the number and was able to get the gasket. I found however that my axel was the same as the one in the 1970 C10. Thanks again.