C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Rear Main Seal - Split or Single Seal?

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Old Sep 24, 2002 | 11:50 PM
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Default Rear Main Seal - Split or Single Seal?

I am having my transmission replaced within the next week. There are a few leaks and one of them is from the rear main seal. The mechanic told me the seal is either a split seal or a single seal. If it is the single seal then I am looking at only a few bucks to replace. :D If it is a split seal then I am looking at much more labor due to pulling the oil pan and the crankshaft. :eek: How can I find out what kind of seal is in my engine?

I have an 88
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Old Sep 24, 2002 | 11:52 PM
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1988 is a one-piece rear main seal. Hello gotta pull the exhaust and transmission.
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Old Sep 24, 2002 | 11:54 PM
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Default Re: (scorp508)

1988 is a one-piece rear main seal. Hello gotta pull the exhaust and transmission.
:yesnod: PITA and aint cheap!
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Old Sep 24, 2002 | 11:55 PM
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Default Re: (scorp508)

I'm doing this when the transmission is being replaced
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Old Sep 24, 2002 | 11:58 PM
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:yesnod: PITA and aint cheap!
$20 part, $300 labor. :D Since you are doing this when the tranny is replaced, good insurance!
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Old Sep 25, 2002 | 12:03 AM
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Default Re: (scorp508)

Scorp, isnt pulling the tranny for 300 bones kinda cheap? Either way, replacing the rear seal while the tranny is out is the most cost effective way to go.

1 question though...how comfortable are you about letting someone replace the seal if the mechanic didnt know which it was and what all had to be done to do it?
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Old Sep 25, 2002 | 12:05 AM
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Scorp, isnt pulling the tranny for 300 bones kinda cheap? Either way, replacing the rear seal while the tranny is out is the most cost effective way to go.
I don't really think so for a mechanic with a lift and proper tools. I can get my tranny out in under 3 hours on my back with only jackstands. It would go much faster up in the air and with a helper.
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Old Sep 25, 2002 | 12:08 AM
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Default Re: Rear Main Seal - Split or Single Seal? (r_hinks)

I had my 1-piece rear main seal done when the tranny was done.

I think he worked the cost into the job.

My local GM dealer had quoted me over $500 to do just the seal.
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Old Sep 25, 2002 | 12:08 AM
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Default Re: (VetteNoob)

Actually the mechanic wasn't exactly sure which seal, I only spoke to him over the phone and just brought up the idea of replacing the seal then. He has worked on my vette several times (replaced driveshafts, ball joints, and fixed a major short circuit problem). So I feel very comfortable with him
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Old Sep 25, 2002 | 12:12 AM
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Default Re: (r_hinks)

Cool. Just wanted to get you thinking in case you hadnt experienced his work much.

Last time I asked my old mechanic, he told me it would cost $400 just to remove and reinstall a tranny in my Honda......I sold the Honda.
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