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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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| | | | Joined: Feb 2007 Posts: 190 Shop Shark | | Shop Shark Joined: Feb 2007 Posts: 190 | Do you have to pull the engine, to fix a rear main seal leak? believe thats what is happening, my clutch is gitting oil soaked. Dont think it's from my trans, looks to thin. No visible leaks from my engine on the out side ? It's a 292 straight six. | | | | | Joined: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | Not clear from your post or your gallery write up, but I'm assuming that your truck has been updated with a 292 GMC engine?
The stock '47 would have been a 235, basicly the same engine as the 216 of that year.
And yes, if you can get the pan off of the COE you can replace the rear main seal. It works as long as the rear main bearing is adjusted correctly. If there is to much clearance in the rear main your still going to have a leak at the seal after a few thousand miles when the seal gets hammered in.
DG
Last edited by Denny Graham; 01/04/2011 2:28 PM.
Denny G
Sandwich, IL
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | I would heed Denny's advice or hint. Ask me how I know! | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | The seal should be easy to replace.
A 292 will have a neoprene lip seal. They can take a little more crank movement from worn bearings than a rope seal.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Feb 2007 Posts: 190 Shop Shark | | Shop Shark Joined: Feb 2007 Posts: 190 | Yes, previous owner put in the 292. Thanks much for the reply's, I will give it a go. Just did'nt want to pull the motor if I did not have too, thanks again. | | |
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