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| | | Forums66 Topics128,087 Posts1,056,377 Members48,442 | | 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!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Sep 2001 Posts: 36 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2001 Posts: 36 | Just how difficult is it to replace the rear main seal in a 283 engine? I want to replace top and bottom. Is it possible to replace with engine in vehicle and all the running bolted on? I know the pan the oil pump and rear main cap need to be removed. Some advice and instruction past that point would appreciated. | | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | I am going to guess that it isn't a whole lot different than the six as far as this goes. | | | | | Joined: Feb 2001 Posts: 1,094 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 1,094 | Look in a motors or chiltons book it will be described in full detail. If it is a lip seal you just drive it around the crank with a careful hand,and when enough comes around the other side a pair of pliers will get it the rest of the way out.
Tommy 59 apache 1/2t 261 short stepside | | | | | Joined: Sep 2001 Posts: 36 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2001 Posts: 36 | I was hoping to get some help from someone who has actually done it. Is there anyone out there who has. | | | | | Joined: Apr 2005 Posts: 1,971 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 1,971 | In my experience, I would take the engine out to work on it rather than crawl under the truck and do it on my back.
In the end I don't think it is any less work to pull the engine than to constantly get up and down and crawling around underneath. It is certainly less frustrating.
If it is a rope seal, I don't think I would want to try to remove and replace it from under the truck. But, that's me. | | |
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