77 Transmission leaking intermittently

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Oct 28, 2007 | 12:11 PM

ripepsi

Thread Starter

5th Gear

Joined: May 2005

Posts: 5

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From: West Des Moines

77 Transmission leaking intermittently

My 77 Corvette transmission leaks intermittently. It can go weeks without a single drop, then one day there will be a nice puddle on the floor. I have inspected the underside of the car and am unable to find the leak. Any ideas? the leak appears to be coming from the towards the front of the transmission near the passenger side.

Thanks

Oct 28, 2007 | 12:28 PM

Easy Mike

Team Owner

Joined: Jun 2000

Posts: 38,923

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From: Southbound

Cruise-In II Veteran

Front tranny seal is the most likely culprit, especially if the car sits for long periods between drives.

Oct 28, 2007 | 02:14 PM

Artsvette73

Drifting

Joined: Jan 2004

Posts: 1,991

Likes: 3

From: Piscataway NJ

Front pass side either the tv cable seal, or dipstick tube seal, or both

Oct 28, 2007 | 08:12 PM

mdbelanger

Instructor

Joined: Jun 2007

Posts: 209

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From: Unlisted

May be that excuse to go for the 2004R

Oct 28, 2007 | 10:57 PM

Artsvette73

Drifting

Joined: Jan 2004

Posts: 1,991

Likes: 3

From: Piscataway NJ

My thm350 didn't leak and it shifted fine. That was my excuse to put a 2004r trans in. You will like it. Oh and it dosen't leak

Oct 28, 2007 | 11:15 PM

78Vette-SA

Le Mans Master

Joined: Feb 2000

Posts: 7,032

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From: Newburgh NY

Quote:

Originally Posted by Artsvette73

Front pass side either the tv cable seal, or dipstick tube seal, or both

if it's an automatic. I just had to replace the dipstick tube o-ring seal on a 77. I have 100's of 0-rings in a kit lying around. Not one would fit the tube correctly. Ordered GM replacements, would only come in a pack of something like 12 or 20. Gotta love GM.

Oct 29, 2007 | 04:42 PM

TEXASDESERTVETTE

Racer

Joined: Aug 2006

Posts: 359

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From: PYOTE BOMBER BASE TEXAS

If The Transmission Fluid Get Below A Certain Level....On Mine The Transmission Pump Can Pick-Up Air, And Foam up On Acceleration....And Puke Fluid Back Out Of The Dipstick/Fill Tube. If I Do Not Keep The Fluid Topped Off...Then It will Puke Fluid On To My Exhaust Headers...Blue...Smoke....Trail ! Check Your Fill Tube To See If It Is Oily.