Click on image for the lowdown. 
====
| | | Forums66 Topics128,023 Posts1,055,367 Members48,420 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | |
#84525 10/20/2007 4:59 PM | Joined: Sep 2007 Posts: 24 Apprentice | | Apprentice Joined: Sep 2007 Posts: 24 | Are there any gaskets, o-rings I need to correctly install the distributor? thanks | | |
#84526 10/20/2007 5:42 PM | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | bobshollow,
I think the general consensus is there are NO o-rings or gaskets installed beneath the distributor.
Stuart | | |
#84527 10/20/2007 5:51 PM | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | I agree with Stuart. The 1947-54 Chevrolet Truck Shop Manuals and the 1947-54 GMC Maintenance Manual (which has a full page diagram of the distributor, with all parts labeled) do not make any mention of a distributor gasket, seal, or o-ring. There is no distributor gasket, seal, or o-ring list in a Master Parts Catalog (until 1957, for a V-8).
However, some people have posted that there was an o-ring. | | |
#84528 10/21/2007 7:27 AM | Joined: Oct 2001 Posts: 3,458 Extreme Gabster | | Extreme Gabster Joined: Oct 2001 Posts: 3,458 | You can't use an o-ring, the distributor needs to be able to rotate in the block as the vacuum advance does its thing.
Paint & Body Shop moderator A lone amateur built the Ark. A large group of professionals built the Titanic. | | |
#84529 10/21/2007 7:26 PM | Joined: Jul 2006 Posts: 183 Shop Shark | | Shop Shark Joined: Jul 2006 Posts: 183 | I was wondering if that might be a secondary reason for the grease in the grease cup, to keep oil from seeping out of the distributor mounting hole :confused_smile: Ed | | |
#84530 10/23/2007 1:12 AM | Joined: Feb 2006 Posts: 112 Member | | Member Joined: Feb 2006 Posts: 112 | when i bought the mini hei it came with an o-ring,,,,,,,,,,,,i used it.  | | |
#84531 10/23/2007 1:32 AM | Joined: Dec 2006 Posts: 1,464 Shop Shark | | Shop Shark Joined: Dec 2006 Posts: 1,464 | Darin; It's o.k. to use the o-ring that came with your HEI, the vacuum advance is internal on the dizzy, the body doesn't rotate. I used it too, it stopped a pesky oil leak the old dizzy had. Yet another reason to go mini-HEI?? | | |
| |