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Topic: 427 rear main seal

in Forum: C3 Engines

Re: 427 rear main seal

Posted: 10/13/14 7:49pm Message 21 of 25
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Suffolk, VA - USA
Joined: 7/24/2012
Posts: 138
Vette(s): 1969 convertible 427 4speed
Pic of leak at trans


(modified large pic to link-aapple)


|UPDATED|10/13/2014 7:49:33 PM (AZT)|/UPDATED|



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Re: 427 rear main seal

Posted: 10/13/14 7:58pm Message 22 of 25
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Dang! They bent to pee outta the pan, right at the drain plug! Yeeeesh! No wonder the thing is peeing!
Also...I see that the bellhousing has been welded....sure hope it is a good weld job.
The trans is aluminuminum....never seen a cast iron case on a Shark era Corvette...from the factory, anyway. If the countershaft is leaking, it will leak from between the bellhousing and the trans case. The gear oil will run both forward, down the bellhousing, and back onto the trans case. An input shaft leak will normally only run out the front side of the bellhousing, close to the engine side.



Joel Adams
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Re: 427 rear main seal

Posted: 10/14/14 8:00am Message 23 of 25
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Suffolk, VA - USA
Joined: 7/24/2012
Posts: 138
Vette(s): 1969 convertible 427 4speed
Thanks for info. The oil pan is going to be fixed. The weld on the bell housing has been there for years. I am trying to keep the number matching drive train. This winter the transmission will be taken out and over hauled.


Re: 427 rear main seal

Posted: 10/14/14 9:51am Message 24 of 25
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
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Be SURE, when you do have the trans worked on, to remove that small metal tag on the bottom of the shifter cover and hide it....that is the factory part number. Very rare to see one still attached to a trans because they usually get lost, or thrown away when having trans work done....Ouch
Once you get the trans finished, re-install the tag in the same place.



Joel Adams
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             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

Re: 427 rear main seal

Posted: 10/18/14 8:38am Message 25 of 25
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Suffolk, VA - USA
Joined: 7/24/2012
Posts: 138
Vette(s): 1969 convertible 427 4speed
Thanks, I will be sure to keep the tag.  


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