Muncie 4 speed Transmission parts,Gears,Bearing kits,Synchro rings and more!!!!
The Muncie 4 speed,was first designed in 1963, and lasted until 1974. There are 2 basic ratios,close and wide.
The close ratio gear box,gives you a fairly high first gear,with the rest of the gears fairly close together,for less rpm drop on your top end.
This gear set should be used with a fairly low set of rear end gears, like 3.73 or lower 3.90 4.11 Etc....
The wide ratio gear set,has a lower 1st speed gear allowing you to use it with a higher set of rear end gears, such as 3.30, 3.42 Etc...
We carry all of the parts,for the Muncie 4 speed M20, M21, and M22,at the best prices available.
Click the buttons below to go to different sections!!!!!
Call toll free at 1 800 405 4226
Scroll down for Muncie parts list and pricing!!!!!
Check out our new muncie nut wrench at bottom of page !!!!!!!!
The call is free give us a ring at 1 800 405 4226 for more info!!!!!
the REF# on the left, to match up the parts in the Diagram below the parts menu,
When you have your list of parts call us at 1 800 405 4226 to place your order.
2nd design muncie, One difference is early and late syncro rings and syncro hubs
you can use either one, but you must use the correct ring with the correct hub.
the picture below shows you where to measure across the hub the early hub measures
1 1/8" across and the late hub is 1" across. now look at the syncro ring picture
look at the top part of the ring on the left side,directly behind the pointed
engaging teeth the ledge of the ring comes out about an 1/8" then it steps down
and comes back another 3/16" or so,this is the late ring,it is used with the
narrower 1" hub. the ring on the right does not have this stepdown and is
used with the wider 1 1/8" hub. Also i get asked alot how do you tell the
difference between the (M20,M21) and the M22 transmission, you can not really tell
by looking at the case ,the difference is the actual cut of the gears,you can see this
in the picture below, the M20 and M21 have a much greater angle to the teeth of
the gear and also will have a twist in the teeth (helical bend), the M22 gear is a
more straighter cut gear teeth and also thicker and wider gapped teeth very
noticeable in the picture.
and the new Muncie super tailhousing, The new supercase
is cast thicker then the original, it has thicker mounting ears
they are also boxed in preventing the ears from breaking off
like the original cases did. the case is also 3/16" overall longer
then the original, allowing us to use a wider front input bearing.
The case also comes with the new front bearing, drain and fill
plugs, The case also uses a metal soft plug at the front where
the countershaft ends, preventing any leaking of oil down the road.
The new Super tailhousing is also cast thicker then original and
you will also notice the heavy duty ribbing on the top and bottom
of the tailhousing making the whole unit much stronger.
New Muncie Super case $276.50 !!!!!!
New Super Tailhousing For 32 spl output shaft $185.00!!!
For 27 Spline output shaft $185.00 !!!!!!!
New Muncie Iron Midplate $78.50 !!!!!!
New Muncie Rollerbearing sidecover with camlevers $186.00
from the basic bearing kit to the new Muncie super rebuild kit!!!
what you see in the pictures is what you get in the kit.
Muncie basic bearing kit $76.72
Muncie basic bearing kit plus syncro rings $94.50
Muncie basic bearing kit plus syncro rings, front
input retainer nut,and 2 syncro key & spring kits,
to do both syncro hubs, plus new countershaft. $126.00
Muncie super rebuild kit,contains everything listed above
plus a new pair of torquelock style shift sleeves,also a
new pair of shift forks for 1-2 and 3-4!!!!!!! $215.00
Look below for more gear and shaft kits!!!!!!
M20 or M21 complete gearset $ 410.00
Order part# GKM20 or GKM21 specify 7/8 or 1" Countershaft
Brandnew M22 gearset $575.00 !!!!!!!!!
Here is a gear and shaft kit this kit works
for M20 or M21 you get 1st, 2nd, 3rd speed gears,both
syncro assemblys complete with rings,rear output shaft
bearing,and new mainshaft, specify, 27 or 32 spline shaft.
Order Part# GSK $550.00
Here is an assembled gear and shaft kit,this kit includes
1st, 2nd, 3rd, input gear,Cluster gear,new mainshaft
both complete syncro assemblys with rings,output bearing
Specify M20, M21, or M22 and 27 or 32 spline output shaft.
Order Part# GSK1/M20, GSK1/M21, $726.00 GSK1/M22 $838.00
Here is the ultimate Gear and Shaft kit to restore your Muncie
to new status,This kit is perfect for the guy that wants to keep
his numbers matching case and tailhousing, this kit includes
mainshaft, with 1st, 2nd, 3rd, input shaft,both sync
assemblys with rings,new clustergear, new mainshaft, both
Reverse idler gear and reverse mainshaft gear,you can also
add a bearing kit to this kit to complete it just add (BK) to the
end of these part numbers, GSKM20, GSKM21, $838.00 GSKM22. $949.00
( These kits come unassembled)
Please call us for pricing on these gear kits you will save money over buying
individual pieces and parts call us at 1 800 405 4226!!!!!
Here are 3 tools you need too make your muncie rebuild a true success!!!
Our brandnew muncie reverse camlever ball and spring installer, now its so easy to do
even a 3 year old can do it, Our 2nd tool is the muncie shift arm tester, after you are done doing
your rebuild you want to make sure the transmission shifts properly on the bench before you
put it in your car, the shift arm tester has both the early and late notches depending what year of tranny you have
Both tools are made in the USA !! from 3/16 plate steel, youll never need another one!!!!!!
And 3rd our own custom muncie wrench used to install and uninstall the front nut our wrench is made
in our machine shop from 1/4" thick steel hardened to rockwell 62C top quality!!!!!
LOOK BELOW TOOLS FOR MUNCIE BALL INSTALLER INSTRUCTIONS !!!!!!!
Muncie ball installer, $15.00
Muncie shift arm tester, $15.00 or buy them as a set for 25.00
Our own muncie nut wrench super tough $28.50