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| | | Forums66 Topics128,164 Posts1,056,982 Members48,458 | | 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!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Jan 2007 Posts: 219 'Bolter | | 'Bolter Joined: Jan 2007 Posts: 219 | Looking for the seal no. most I am finding is the repair kit info. The engine only has 28,000 on it so I am going with the original. Len
layback
| | | | | Joined: Feb 2004 Posts: 29,865 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,865 | Isn't the front seal the same one as a small block V8? The diameter of the balancer snout is identical, and I'm pretty sure the OD matches up as well. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
| | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Guys, Hotrod Lincoln is correct, according to my Federal-Mogul catalogue the seal is the same for the "straight 6 & V8 1946 to 1967)" National p/n 6936S, hope that helps. | | | | | Joined: Jan 2007 Posts: 219 'Bolter | | 'Bolter Joined: Jan 2007 Posts: 219 | I have had a few different National numbers given me today the p/n 69365 didn't work for my guy. When I told him about being the same as the small block he was able to track it down. What he came up with is National K3517S. I picked it up and it seems to be a match. Not sure why the other didn't work out but thanks guys for the info. Another problem solved. Len
layback
| | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy laybacklenny, the National p/n I gave you (6936S) has an "S" as the last digit not a 5, a check of 6936S at RockAuto yielded a part description whereas K3517S yielded "no parts found" | | | | | Joined: Jan 2007 Posts: 219 'Bolter | | 'Bolter Joined: Jan 2007 Posts: 219 | Tried it with the 'S' at the end he still had no luck, I think I should have another look at it. I don't have the old one out yet I wanted to have the new one on hand before I removed it. The one in there looks like a two part seal I will pull it today and let you know. Thanks 3B for the heads up. Len
layback
| | | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 | I think this is the seal under discussion? If I am wrong, I apologize. Note that Rockauto lists two front engine seals (timing cover seals). The wider seal serves to try to place the seal on an "unworn" location on the drive shaft. | | |
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