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

Transmission Removal

Thread Tools
 
Search this Thread
 
Old Jan 13, 2012 | 07:30 PM
  #1  
duescherc's Avatar
duescherc
Thread Starter
Intermediate
 
Joined: Jul 2009
Posts: 29
Likes: 0
Default Transmission Removal

Have a 72 that has a slight leak at the gasket areas on the transmission. Wondering if anyone has removed the transmission while the engine is still in the car or is this just way to difficult due to the limted space and access around the transmission. Any thoughts or advice is greatly appreciated.
Reply
Old Jan 13, 2012 | 07:32 PM
  #2  
milo30's Avatar
milo30
Drifting
 
Joined: Feb 2008
Posts: 1,560
Likes: 4
From: Arlington texas
Default

Automatic or standard? I wouldn't pull the engine and trans together for this if that is what you are asking. Room will be tight but it is doable. Will help if you have a transmission jack and power tools
Reply
Old Jan 13, 2012 | 10:18 PM
  #3  
BB68Vett's Avatar
BB68Vett
Burning Brakes
25 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Feb 2001
Posts: 929
Likes: 5
From: Marietta GA
Default

This is doable, at least with a manual. I left the engine in when I removed the tranny in my '68.
Reply
Old Jan 13, 2012 | 10:55 PM
  #4  
jcloving's Avatar
jcloving
Burning Brakes
10 Year Member
 
Joined: Dec 2010
Posts: 945
Likes: 10
From: Winston Salem NC
Default

I am doing this now. Put some support under the oil pan and pull that tranny.
Reply
Old Jan 14, 2012 | 09:33 AM
  #5  
Roco71's Avatar
Roco71
Melting Slicks
 
Joined: Jul 2009
Posts: 3,264
Likes: 3
From: Vero Beach FL
Default

I pulled (dropped) the TH400 on mine with a floor jack and a 12"x12"x1" piece of plywood under the trans pan. Only took a few hours not that hard to do with the engine still in place.
Reply
Old Jan 14, 2012 | 09:40 AM
  #6  
1974ta's Avatar
1974ta
Melting Slicks
20 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Feb 2004
Posts: 2,111
Likes: 32
From: Damascus MD
Default

Standard or Auto? Auto will have removable crossmember.
Reply
Old Jan 14, 2012 | 01:29 PM
  #7  
duescherc's Avatar
duescherc
Thread Starter
Intermediate
 
Joined: Jul 2009
Posts: 29
Likes: 0
Default

It is a manual transmission. Thanks for the replys thus far, really wondering on the putting it back in since this always seems to be harder than removing/taking apart. But it sounds like I will be revoving it while the engine is still in the car anyways though.
Reply
Old Jan 14, 2012 | 04:10 PM
  #8  
1974ta's Avatar
1974ta
Melting Slicks
20 Year Member
All Eyes On Me
Liked
Loved
 
Joined: Feb 2004
Posts: 2,111
Likes: 32
From: Damascus MD
Default Removal

Search the threads.

There are some excellent write ups. Basically you will have to pul the trans back and then rotate it 90 degrees with shifter shafts pointing up. Then tilt the front down and slide it out.

Sounds easy but it is a really tight squeeze. While you have it out inspect the clutch. You don't want to have to do it again. If the heat shield is missing now is a great time to put it in. Interior will be cooler and a tiny bit quieter.


Bill
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Jan 14, 2012 | 07:35 PM
  #9  
gcusmano74's Avatar
gcusmano74
Drifting
 
Joined: Mar 2011
Posts: 1,886
Likes: 9
Default

SLIGHT leak? Put a piece of cardboard on the garage floor right underneath the transmission. Change monthly.
But seriously. The trans can be pulled out without removing the engine. Get a Chilton's or something for the exact procedure. The front exhaust pipes and shift linkage come out first and go back in last. Once you're that far into it, inspect the clutch, as well. But it's easy to get carried away, once you start. Don't.
If you have a Muncie manual trans with an aluminum case, you can just bench press that puppy in and out yourself. It's about 75 lbs, if I recall correctly. If you keep the driveshaft yoke in place, and are very careful, you might not even have to drain it first. Not easy, on your back and under the car. But doable. Don't even think about that with a TH400 or TH350, though. They are just way too heavy. The automatics need a trans jack, for sure.

Last edited by gcusmano74; Jan 14, 2012 at 07:52 PM.
Reply
Old Jan 15, 2012 | 10:04 AM
  #10  
duescherc's Avatar
duescherc
Thread Starter
Intermediate
 
Joined: Jul 2009
Posts: 29
Likes: 0
Default

I like the thought of cardboard on the floor, which I did over this past summer. I just finished a frame off restoration on the car this past summer and the seals on the transmission must have dry rotted after sitting for so long. So I should have known better and replaced them while I had the whole car apart, but I guess you live and learn.
Reply
Old Jan 15, 2012 | 10:27 AM
  #11  
vetman1's Avatar
vetman1
Racer
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Sep 2006
Posts: 313
Likes: 8
From: Charleston Illinois
Default

Just took mine out yesterday with the engine in the car. Holding up the engine while tranny is out with a cherry picker. Worked great and did not take that long.
Reply
Old Jan 15, 2012 | 11:21 AM
  #12  
Sunstroked's Avatar
Sunstroked
Melting Slicks
15 Year Member
Liked
 
Joined: Jun 2006
Posts: 2,071
Likes: 147
From: S Nevada
Default

Originally Posted by duescherc
I like the thought of cardboard on the floor, which I did over this past summer. I just finished a frame off restoration on the car this past summer and the seals on the transmission must have dry rotted after sitting for so long. So I should have known better and replaced them while I had the whole car apart, but I guess you live and learn.
This is exactly the reason why I pulled my muncie apart yesterday. Doing a body off restoration on my 72 too. I did not know the condition of the tranny and I did not want to just install it only to find out it either didn't shift correctly or leaked. I bought the book and dvd from 5speeds.com. I'm a firm believer that anything (within reason) can be tackled if you have the proper knowledge. If you did your own restoration on your car I'm sure you already have the Gm service manual, but the transmission repair is not covered in the shop book. The transmission book by Paul Cangialosi is highly recommended. You can live without the dvd, but it is informative and shows in detail every step of the dis-assembly and assembly of the muncie. Good stuff.
Reply
Old Jan 16, 2012 | 02:34 PM
  #13  
72bowtieguy's Avatar
72bowtieguy
Advanced
 
Joined: Mar 2011
Posts: 74
Likes: 0
From: Fairfield California
Default

I have a 72 and removed mine by myself. As others have said, had the engine held up with a piece of wood under the pan on a floor jack. Unbolted it, spun it 90 degress as I backed it out, then let the front end drop once the input shaft cleared the bellhousing. I did remove the shifter and associated linkage first obvioulsy. And though I've heard you can somehow do it without (not sure how), I removed my exhaust for extra room. Be careful the tailshaft doesnt slip out as you pull it out from the cross member, You can make a mess. Unless you drain it first. Some people recommend taping or tying the shaft so it doesn't back out. And make sure you are squarely under it to bench press it down to the ground if You aren't using a jack. I also got 2 eyelids full of crap so I would recommend safety glasses.
Reply
Old Jan 16, 2012 | 03:00 PM
  #14  
learje's Avatar
learje
Racer
10 Year Member
 
Joined: Jan 2009
Posts: 261
Likes: 1
From: frederick maryland
Default

its easy. gettin the shifter out was the toughest part here. took me just over 4 hours alone to pull mine. my frames 17" from the ground, and i didnt need to loosen the bellhousing. had a 6X6 ready, pulled her back, rotated 90 deg, lowered the nose onto the 6x6, slid it fwd and out
Reply

Get notified of new replies

To Transmission Removal





All times are GMT -4. The time now is 10:07 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