Register or Log In To remove these advertisements. |
|
|
|
Thread Tools | Display Modes |
|
02-05-2013, 07:19 PM | #1 |
Registered User
Join Date: Aug 2009
Location: Pleasanton, CA
Posts: 7
|
need advice- TH400 extension housing seal
I'm replacing the extension housing on my '72 C20 because it is cracked. The replacement housing I got has an O-ring groove on the mating surface. I've been looking allover and can't find any reference to the TH400 short tailshaft housing taking a large O-ring to seal, only the thin paper gasket which I already have in my seal kit. Other than that the housings look identical- both large "C" castings.
Anyone have any experience with this? Did GM switch to an O-ring seal on newer TH400? If so, anyone have the part # on it. Thanks |
02-05-2013, 07:43 PM | #2 |
Cluster King
Join Date: Nov 2012
Location: Junction City, OR
Posts: 5,263
|
Re: need advice- TH400 extension housing seal
If your replacement housing has a groove for an O ring then the gasket won't work. Use the O ring and you will be fine. I have never seen one with a paper gasket. The last one I rebuilt was a 1969 trans out of a 69 Chevelle and it had an O ring.
Sorry, I dont have a part number but here is a ebay link for a short style http://www.ebay.com/itm/N-O-S-TH400-...3146fc&vxp=mtr |
02-06-2013, 12:52 AM | #3 |
Registered User
Join Date: Aug 2009
Location: Pleasanton, CA
Posts: 7
|
Re: need advice- TH400 extension housing seal
Thanks for the info.
|
Bookmarks |
|
|