Muncie M20 Rebuild
Thread Starter
Cruising
Joined: Apr 2012
Posts: 10
Likes: 0
Muncie M20 Rebuild
After being quoted a price of $1600 to rebuild my M20, I've decided to do the rebuild myself. Can anyone recommend a good place to purchase a rebuild kit/gears?
Has anyone has experience with "www.thegearbox.org"?
Has anyone has experience with "www.thegearbox.org"?
Racer
Joined: Feb 2012
Posts: 421
Likes: 27
From: Harrisburg PA
Not sure where you are located, but reach out to Jody's transmissions in Reading, PA. If you buy your parts from him, he will give you unlimited technical support--answer questions along the way, etc...
He's a regular on the Camaros.net forums.
Reallt good guy to deal with
He's a regular on the Camaros.net forums.
Reallt good guy to deal with
Thread Starter
Cruising
Joined: Apr 2012
Posts: 10
Likes: 0
Not sure where you are located, but reach out to Jody's transmissions in Reading, PA. If you buy your parts from him, he will give you unlimited technical support--answer questions along the way, etc...
He's a regular on the Camaros.net forums.
Reallt good guy to deal with
He's a regular on the Camaros.net forums.
Reallt good guy to deal with
Thread Starter
Cruising
Joined: Apr 2012
Posts: 10
Likes: 0
I have the L46 but have been thinking about building a 383 for the car. I enjoy the 4-speed so I'm not looking to upgrade....I have considered upgrading to a M22 but I think that it would be an overkill...any thoughts?
Melting Slicks
Joined: Feb 2004
Posts: 2,111
Likes: 32
From: Damascus MD
M20
Not sure where you are located, but reach out to Jody's transmissions in Reading, PA. If you buy your parts from him, he will give you unlimited technical support--answer questions along the way, etc...
He's a regular on the Camaros.net forums.
Reallt good guy to deal with
He's a regular on the Camaros.net forums.
Reallt good guy to deal with
He did my 70 Corvette M20. $1600 is waaay high unless case is shot.
Great guy.
Bill
Racer
Joined: Jan 2009
Posts: 261
Likes: 1
From: frederick maryland
i got the dvd on rebuilding the muncie here
http://www.5speeds.com/video.html
but got my parts from thegearbox.org
kevin there was very helpful
heres a link to my thread
http://forums.corvetteforum.com/c3-t...ons-start.html
was an easy project, but if i had to do it again id go ahead and get the iron midplate
hth
http://www.5speeds.com/video.html
but got my parts from thegearbox.org
kevin there was very helpful
heres a link to my thread
http://forums.corvetteforum.com/c3-t...ons-start.html
was an easy project, but if i had to do it again id go ahead and get the iron midplate
hth
Le Mans Master
Joined: Jul 2006
Posts: 8,117
Likes: 104
From: charlotte north carolina
Try T&B Transmission & Gear in Deer Park Washington. Excellent service and very helpful. Build a wooden box or platform with a hole in the top to set the trans into as a stand. When it comes time to drop the gear set into the case, you'll need it steady and at floor height. Also a good time to buy a press at Harbor Freight-it makes pressing the gears off and on very easy. Your total investment for the press, short sections of pipe (for the press), and parts will be less than $500. It's a nice weekend job.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Burning Brakes
Joined: Dec 2004
Posts: 1,031
Likes: 14
From: Milton GA
I also used the gearbox.
Consider using a torque-lock slider for the 1-2 slider.
Rebuilt mine in the basement of my dad's house. Only special tool needed is a hydraulic press. You can pick one up for $125 at Harbor Freight that will get the job done:
http://www.harborfreight.com/12-ton-...ess-33497.html
Consider using a torque-lock slider for the 1-2 slider.
Rebuilt mine in the basement of my dad's house. Only special tool needed is a hydraulic press. You can pick one up for $125 at Harbor Freight that will get the job done:
http://www.harborfreight.com/12-ton-...ess-33497.html
Burning Brakes
Joined: Aug 2008
Posts: 878
Likes: 55
From: Deep South Denmark
...
Only special tool needed is a hydraulic press. You can pick one up for $125 at Harbor Freight that will get the job done:
http://www.harborfreight.com/12-ton-...ess-33497.html
Only special tool needed is a hydraulic press. You can pick one up for $125 at Harbor Freight that will get the job done:
http://www.harborfreight.com/12-ton-...ess-33497.html
Thread Starter
Cruising
Joined: Apr 2012
Posts: 10
Likes: 0
I also used the gearbox.
Consider using a torque-lock slider for the 1-2 slider.
Rebuilt mine in the basement of my dad's house. Only special tool needed is a hydraulic press. You can pick one up for $125 at Harbor Freight that will get the job done:
http://www.harborfreight.com/12-ton-...ess-33497.html
Consider using a torque-lock slider for the 1-2 slider.
Rebuilt mine in the basement of my dad's house. Only special tool needed is a hydraulic press. You can pick one up for $125 at Harbor Freight that will get the job done:
http://www.harborfreight.com/12-ton-...ess-33497.html
Le Mans Master
Joined: Apr 2001
Posts: 5,941
Likes: 281
From: Was New Orleans but swam to Baton Rouge LA
Cruise-In IX Veteran
Another one for Jody's as well. He set me up good when I built my muncie as a M22w last year. I think I posted a bunch of pics in a thread.
Safety Car
Joined: Nov 2001
Posts: 4,424
Likes: 619
From: northern CA
I also got my M20 rebuild parts from '5 speeds'. .. As a first timer, the rebuild was a breeze to do. One caveat to add is to keep in mind that the roll pin that holds the reverse shifter shaft in place on the tail housing is a tapered fit. It only comes out one way. I found out the hard way...........after reading the instructions .. ! . .
Thread Starter
Cruising
Joined: Apr 2012
Posts: 10
Likes: 0
i got the dvd on rebuilding the muncie here
http://www.5speeds.com/video.html
but got my parts from thegearbox.org
kevin there was very helpful
heres a link to my thread
http://forums.corvetteforum.com/c3-t...ons-start.html
was an easy project, but if i had to do it again id go ahead and get the iron midplate
hth
http://www.5speeds.com/video.html
but got my parts from thegearbox.org
kevin there was very helpful
heres a link to my thread
http://forums.corvetteforum.com/c3-t...ons-start.html
was an easy project, but if i had to do it again id go ahead and get the iron midplate
hth
Thread Starter
Cruising
Joined: Apr 2012
Posts: 10
Likes: 0
I also got my M20 rebuild parts from '5 speeds'. .. As a first timer, the rebuild was a breeze to do. One caveat to add is to keep in mind that the roll pin that holds the reverse shifter shaft in place on the tail housing is a tapered fit. It only comes out one way. I found out the hard way...........after reading the instructions .. ! . .
thanks...I'll remember that when I am reassembling everything...It seems that I must always learn the hard way
Racer
Joined: Jan 2009
Posts: 261
Likes: 1
From: frederick maryland
http://www.5speeds.com/cart/index.ph...&product_id=68
read some references on using the stronger iron plate, after mine was back together..i dunno, guess it depends on your HP level and usage. i went with the torque lock sliders, they seem to be a worthwhile upgrade.
hth
read some references on using the stronger iron plate, after mine was back together..i dunno, guess it depends on your HP level and usage. i went with the torque lock sliders, they seem to be a worthwhile upgrade.
hth
Limping across the line
Joined: Oct 2002
Posts: 5,299
Likes: 109
From: Peoria Az
Another tip
The counter gear shaft should only come out the rear of the case. The forward end is a interference fit to minimize oil leakage from the shaft/case bore.
The reason alot of people have oil leaks from the countershaft is beacause at some time the shaft was pressed out the front of the case
The counter gear shaft should only come out the rear of the case. The forward end is a interference fit to minimize oil leakage from the shaft/case bore.
The reason alot of people have oil leaks from the countershaft is beacause at some time the shaft was pressed out the front of the case
Race Director
Joined: May 2005
Posts: 10,674
Likes: 122
From: Millington Illinois
St. Jude Donor '08-'09
http://www.5speeds.com/newm22.html
THIS HAS ALL NEW HD PARTS. If you buy a new one your rebuildable core is worth $4-500 so your at the same cost.
The new M22Z has a 2.98 first gear and nice ratio spread to match up better with a 3.08 or 3.36 rear end for $75 more.
My buddy ran an Autogear M22 in a 57 chevy behind a 540 with three stages of Nitrous and slicks every weekend for 3 years before he went with an auto for consistency. Never hurt it. I used to tear out the old muncies behind a 350 with street tires.
Last edited by 63mako; Aug 24, 2014 at 12:19 PM.
Team Owner
Joined: Apr 2002
Posts: 26,563
Likes: 29
From: Northridge California
St. Jude Donor '14
I had my Muncie 4 Speed rebuilt for $850.00, which included a new tailshaft/rear case.
Box and Gear Corporation out of Van Nuys, CA did the work. They may be able to supply you with parts also. If you call, ask for Junior.
Box and Gear Corporation out of Van Nuys, CA did the work. They may be able to supply you with parts also. If you call, ask for Junior.