Muncy M-22 mods?
Thread Starter
Racer
Joined: Aug 2005
Posts: 456
Likes: 0
From: Forty Fort PA
Muncy M-22 mods?
Hi everyone. I am in the middle of upgrading my clutch to a McLeod dual disk. The engine is a 540 inch with a cam from Chris Straub, Edelbrock heads and air-gap intake with a Quick Fuel Q-1050 carb. Smoked the clutch on my first run at the track.
While I have the trans out (M-22) I am considering installing a iron/steel mid-plate and possibly a roller 1st gear. I am interested in you thoughts on these transmission upgrades and if they are worth the cost.
Thanks in advance for your response.
Langg
While I have the trans out (M-22) I am considering installing a iron/steel mid-plate and possibly a roller 1st gear. I am interested in you thoughts on these transmission upgrades and if they are worth the cost.
Thanks in advance for your response.
Langg
Melting Slicks
Joined: Sep 2004
Posts: 2,655
Likes: 19
Not entirely sure if the early 10 spline input shaft muncies were all 1"
But you might consider an Autogear Supercase as well as the iron midplate. They also offer a beefed up tailstock, but I've not seen a lot of tail failures on a Muncie.
The only other improvement would be the torque lock sliders.
But you might consider an Autogear Supercase as well as the iron midplate. They also offer a beefed up tailstock, but I've not seen a lot of tail failures on a Muncie.
The only other improvement would be the torque lock sliders.
Le Mans Master
Joined: Oct 2010
Posts: 6,937
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From: melbourne florida
2023 C3 of the Year Finalist - Modified
i know this is not what was asked but i have used chrysler 833 4 speeds hemi spec transmissions and never broke one. Bill Jenkins used that transmission in his Pro-Stock cars before the Lenco came out. just an alternative.
Le Mans Master
Joined: Dec 2003
Posts: 5,727
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From: Fremont CA
Needle roller bearing was originally designed by GM because M-22 liked to weld 1st gear to bearing sleeve on main shaft. I believe this is because the reduced angle of gear cut causes more side loading on gear set. Later production Muncies had gear sleeves with ground flats to allow increased lubrication to gear sleeve. Auto Gear offers both needle bearing and grooved 1st gear sleeves, I have used ground sleeves with good success over the years. The cast iron mid plate also offered by Auto gear is an improvement of the original aluminum plate and will prevent high HP applications from spreading the bearing location and causing gear failure.
Now if someone could explain to me why people jump into a conversation on a M-22 asking about countershaft sizing when all M-22s are 1" diameter and WTF a Pig of a 4 speed transmission would do to improve a Corvette (Hemi 4 speed is good for being used as a boat anchor....how do I know? In a previous life I spent many hours playing with said transmission do things like grinding off every other Syncro tooth for creating a " slick shift " A-833 4speed "crash box" and believe me CRASH BOX! Is the proper description of said transmission!)
Now if someone could explain to me why people jump into a conversation on a M-22 asking about countershaft sizing when all M-22s are 1" diameter and WTF a Pig of a 4 speed transmission would do to improve a Corvette (Hemi 4 speed is good for being used as a boat anchor....how do I know? In a previous life I spent many hours playing with said transmission do things like grinding off every other Syncro tooth for creating a " slick shift " A-833 4speed "crash box" and believe me CRASH BOX! Is the proper description of said transmission!)
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
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Team Owner
Joined: Apr 1999
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
The M series ultimate problem is case strength. Your 540 requires a higher TQ rated tranny. I tried to dig on the internet and find a TQ rating for the M series. Lots of worthless information out there.
The world is full of choices. I personally like OD trannys auto or manual. You need to look at what is your passion. If it is drag racing. I would jump on the new 6 speed auto that can handle 1000 hp. 6L80E. If you love manuals. lots of 5-6 speeds out there
Le Mans Master
Joined: Oct 2010
Posts: 6,937
Likes: 848
From: melbourne florida
2023 C3 of the Year Finalist - Modified
Needle roller bearing was originally designed by GM because M-22 liked to weld 1st gear to bearing sleeve on main shaft. I believe this is because the reduced angle of gear cut causes more side loading on gear set. Later production Muncies had gear sleeves with ground flats to allow increased lubrication to gear sleeve. Auto Gear offers both needle bearing and grooved 1st gear sleeves, I have used ground sleeves with good success over the years. The cast iron mid plate also offered by Auto gear is an improvement of the original aluminum plate and will prevent high HP applications from spreading the bearing location and causing gear failure.
Now if someone could explain to me why people jump into a conversation on a M-22 asking about countershaft sizing when all M-22s are 1" diameter and WTF a Pig of a 4 speed transmission would do to improve a Corvette (Hemi 4 speed is good for being used as a boat anchor....how do I know? In a previous life I spent many hours playing with said transmission do things like grinding off every other Syncro tooth for creating a " slick shift " A-833 4speed "crash box" and believe me CRASH BOX! Is the proper description of said transmission!)
Now if someone could explain to me why people jump into a conversation on a M-22 asking about countershaft sizing when all M-22s are 1" diameter and WTF a Pig of a 4 speed transmission would do to improve a Corvette (Hemi 4 speed is good for being used as a boat anchor....how do I know? In a previous life I spent many hours playing with said transmission do things like grinding off every other Syncro tooth for creating a " slick shift " A-833 4speed "crash box" and believe me CRASH BOX! Is the proper description of said transmission!)
Pro
Joined: Aug 2010
Posts: 698
Likes: 8
From: Stockholm Sweden
The roller bearing on the first gear however will do nothing unless you running at very high rpms.
Robert Casaday on Riverside Gears told me that if you are running at 7500-8000 rpm continously its a good investment.
But for me myself doing max 6000rpm it would do nothing.
The AutoGear M22 is a totally new gearbox, it has a new stronger case, a new stronger tail, all the gerars are new and of a stronger material than stock.
http://www.autogear.net/
I have been running an old M20 for 3 years but have now invested in a brand new AutoGear Supercased M22 from Riverside Gears.
I am really looking fwd to try it in the spring.
Give Robert on Riverside Gears a call and he will answer your questions.
http://www.riversidegear.com/muncie-...-614-4327.html
//Ricky.
Last edited by RickyBerg; Dec 16, 2013 at 02:53 AM.
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
"The roller bearing on the first gear however will do nothing unless you running at very high rpms."
Not quite true...The needle bearing 1st gear was developed by GM after finding out the 1st gear of an M-22 had a tendancy to seize especially when being used by NASCAR teams at the Riverside NASCAR races. The siezing is a combination of quality of lubricants, gear thrust angle, high HP and RPM's. I won't build an M-22 without at least fitting a grooved 1st gear sleeve into the transmission. Auto gear has 1st gear sleeves that are grooved I used to in the old days go to my friend's machine shop and grind reliefs using his diamond tool bit sharpener....I'm dating myself
Not quite true...The needle bearing 1st gear was developed by GM after finding out the 1st gear of an M-22 had a tendancy to seize especially when being used by NASCAR teams at the Riverside NASCAR races. The siezing is a combination of quality of lubricants, gear thrust angle, high HP and RPM's. I won't build an M-22 without at least fitting a grooved 1st gear sleeve into the transmission. Auto gear has 1st gear sleeves that are grooved I used to in the old days go to my friend's machine shop and grind reliefs using his diamond tool bit sharpener....I'm dating myself