First off how common is this? The motor in question has just shy of 320,000 on it.
I have been quoted 9 hours to r&r the trans and install the seal but they were up front with me in saying they are concerned that the crank is worn and it may not work.
Since I really don't have a lot of experience with Vortec motors with this kind of mileage any input on this would be apreciated!!!
Former boss replaced his rear main at 310k miles on a 5.3L 'burb. LAst I heard he was still daily driving it 60 miles a day. Biggest problem he had was the exhaust studs were done and snapped.
Yep I got that problem as well. I am going to see what. ARP sells to replace the stock bolts.
You should be able to speedi sleeve the crank if its badly worn.
ya'll are kidding right,not that long ago 70,000 was un heard of, 3 HUNDRED Thousand miles is Incredable,spend a few bucks Rebuild it all the way or replace it, Like it won't make headline news when it drops a valve but then you can Curse Chevy
I wouldn't be too worried about wear. I've never seen a rear main wear like that. If sleeves are available it should be fairly straightforward, although the seals are harder to get on without bending the lip and losing the spring.
I think most of the wear you see at the front seals comes from external debris getting up against/under the seal lip with a flywheel cover on, the rear mains stay relatively clean.
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