What bell housing

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Mar 29, 2010 | 05:40 PM

Phil Zell

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Drifting

Joined: Nov 2003

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From: l In

What bell housing

Doing an auto to manual on my 75, What all GM bell housings will work with 11 in. clutch and 168 tooth fly wheel ? Heard too many horror stories about the Chinese 621's

Any help would be appreciated.

Thanks

Mar 29, 2010 | 06:03 PM

TheSkunkWorks

Le Mans Master

Joined: Apr 2007

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From: Graceland in a Not Correctly Restored Stingray

If you want an OEM aluminum bell to fit with 11"/168 teeth you are indeed looking for a genuine 3899621 casting. There are some originals still available out there, but caveat emptor.

Keisler makes their own "Super Duty" titanium-aluminum alloy version of the 621, but don't think it's SFI rated if you need such. Of course, if you do need an SFI bell there's always Lakewood and McLoed...

Mar 29, 2010 | 07:12 PM

jordan89

Safety Car

Joined: Mar 2009

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From: Oakland California

There's a 621 bell housing on ebay right now.

Mar 30, 2010 | 07:44 AM

Phil Zell

Thread Starter

Drifting

Joined: Nov 2003

Posts: 1,874

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From: l In

Quote:

Originally Posted by TheSkunkWorks

I opted for the Keisler,

Thanks

Mar 30, 2010 | 08:49 AM

Garys 68

Melting Slicks

Joined: Sep 2004

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I bought Keislers 621 bell housing, very nice piece. Comes with adjustable throwout arm stud. I bought their vette specific throwout arm too.

Mar 30, 2010 | 09:07 AM

Gordonm

Race Director

Joined: Dec 1999

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From: Forked River NJ

I used Keislers 621 bellhousing on a forum members auto to manual swap also. Nice piece. We used a hydraulic TO bearing on his setup. Worked out very well.