C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

1977 TH-350 question

Thread Tools
 
Search this Thread
 
Old Jan 23, 2006 | 11:10 AM
  #1  
MELVIN's Avatar
MELVIN
Thread Starter
Safety Car
10 Year Member
 
Joined: Mar 1999
Posts: 3,715
Likes: 1
From: VASS, NC, USA
Default 1977 TH-350 question

This is in my 1977 TA Im restoring:

Man, I cant stop this leak

Its not the rear seal, or trans pan. So where in the hell is it leaking from? Just sitting in the garage (it hasnt been on the road yet), its leaked at least a qt on the floor over the last few days................

It seems to come from somewhere around where the dipstick attaches on top the tranny body, but why would it leak from there just sitting?

The tranny coolant lines attach in this area as well
Reply
Old Jan 23, 2006 | 12:25 PM
  #2  
markdtn's Avatar
markdtn
Le Mans Master
10 Year Member
 
Joined: Aug 2003
Posts: 7,720
Likes: 12
From: Chattanooga TN
Default

Dipstick bushing can leak. Also the speedometer cable "bullet" can wear and leak.

I would clean it well, then jack it up and let it sit (level). Then see where the wet is coming from.
Reply
Old Jan 23, 2006 | 12:42 PM
  #3  
Aflac's Avatar
Aflac
Race Director
20 Year Member
 
Joined: Oct 2002
Posts: 12,065
Likes: 2
From: Smalltownville Michigan
Cruise-In 5, 6 & 10 Veteran
St. Jude Donor '09
Default

dont be shocked if it's the front pump seal...
Reply
Old Jan 23, 2006 | 12:51 PM
  #4  
comp's Avatar
comp
Team Owner
10 Year Member
 
Joined: Sep 2003
Posts: 88,393
Likes: 2
From: eville in
Default

dipstick Oring
Reply
Old Jan 23, 2006 | 01:29 PM
  #5  
BerniesVette's Avatar
BerniesVette
Melting Slicks
 
Joined: Oct 2004
Posts: 2,662
Likes: 8
From: Knoxville Tennessee
Default

My TH 350 started leaking from the dipstick just sitting in the floor after I removed it to install the T5. The seal gets hard and leaks over time. Another bad place to leak is where the speedo cable enters the transmission case. It wears and starts to leak over time.
Reply

Get notified of new replies

To 1977 TH-350 question





All times are GMT -4. The time now is 12:12 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE