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Need dimensions of Muncie M21, M20 or M22 - Camaro Chevrolet Cars & Trucks

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I want to know what size trani came in a Chevy one ton with a stock 454

"Big Dooley" it was called back then....
the transmission, has a side plate that tells ALL.
look there, (will need serious cleaning from 1983 to now)
GM matches, tranny to engine power and torque max.
they have M/T and A/T tranny. 4speed Muncie, (my first love) m20
M40 Th400 3speed slush pump?
here is first google hit on spec;s like a answer on other post. same'

note 2 , 454s one with TBI
The one-ton model designation was the C or K 30 for GMC and 3500 for Chevrolet.(wiki quote, sure read the wiki on you truck first)

there is no lack of information on this truck
use GOOGLE it really is your friend.
here is a search.

here is K30 (which is it C or K?) learn this first
C-Series Truck = 2 Wheel Drive (1960-2002)
K-Series Truck = 4 Wheel Drive (1960-2000)


there is how you can research your car, then ask more detailed questions, (peel the onion)????

Jul 05, 2014 | Cars & Trucks

2 Answers

ABS Light on a 2001 Grand Cherokee Laredo 4WD

Polo Jeep Suzuki Inc -
2300 N Dr Martin L King Jr, Muncie - (765) 747-5115
Directions and more »

iconb.png Bill Gaddis Chrysler-Dodge-Jeep -
1717 N. Wheeling Ave., Muncie - (765) 289-2361

Sep 22, 2008 | 2001 Jeep Grand Cherokee


1AAuto, Remove Install Muncie 4 Speed Transmission GTO Chevelle Skylark 442

<span style="font-weight: bold;">1AAuto,com Remove Install Muncie 4 Speed Transmission GTO Chevelle Skylark 442<br /><utube src="0mzg69kgKQI">(do not delete) </i></b><img src="utube.png" /><br /><br /><utube src="b3wKGhMbszc"><br /><br /><br /><br /><br /><br /></span>

on Jun 14, 2011 | Pontiac GTO Cars & Trucks

1 Answer

Muncie m21 gearbox jumps out of fourth gear underload/acceleration?

The trans has to come out & apart
You need to replace ALL of the brass
synchro rings & check the side case shift forks
for wear
Best to get a manual or picture of the inside
You can do yourself,I did when I was 19 years old
some many decades ago & I had no experience
I went to a dealer for shims also to set it up correctly
I did have the factory service manuals which for me
were a must,they don't tell you what to do but the picture
of the parts & specs are there to put it back together

Aug 11, 2013 | Cars & Trucks

1 Answer

I need to know what kind of tranny fluid goes in a manual transmission on a 1989 gmc seirra with 305 its a stepside to. i put amsoil synthetic manual synchromesh transmission fluid in it but im worried...

Muncie 4 (117MM) speed---Lubricant Type---------80W-90 Gear Oil
Muncie 5LM60 (HM-290) 4 & 5 Speed ---------Lubricant Type------Syncromesh Trans Fluid T2850

Oil Capacity= 5 Speed (85mm & 109mm)--3.6 pt (US)
(New Venture Gear 4500)--8pt (US)

4 Speed= (85mm)--3.6pt (US)
(117mm)--8.4pt (US)

Hope this helped you ??

Jun 14, 2011 | 1989 GMC Sierra

1 Answer

I installed a muncie m20 tranny in my 72 camaro and thought the shft rods were set ..but turns out 1st gear was in the 2nd gear position i tried flipping rod paddles upside down now gears are locked up...

You are right about the shift pattern. Reverse is hard left and up.If your gears are locked up, you'll probably have to remove the side cover and reset the shift levers to their neutral position and then slide gears around to put it back on. With it back on the shift levers should point up toward the car floor. 3-4 is the shift lever closest to the engine. 1-2 is the middle one and reverse is the one closest to the back of the tranny. Check all your swivel points for looseness. If there is any play then you'll have to bush it out or you'll have trouble getting it to shift into gear and stay in. I used some old copper pipe to make bushings on mine, because it used to jump out of gear.
To properly attach your shift linkage, put the shifter and the trans mounted shift levers in neutral. Loosen the locking clamps so the shift rods slide freely. start with the reverse lever, which is the inner most rod on the shifter and tighten the rod nut against the swivel. Then tighten the lock nut. Do the same with the 1-2 rod on the middle rod on the shifter and then the 3-4 which is the outside rod . This should set you up, according to Chilton.
They note that if the tranny is 68 Camero Muncie the shift rods need to be shortened 3 complete turns of the lock nut.
Hope some of this helps.

Aug 13, 2010 | Chevrolet Camaro Cars & Trucks

1 Answer

What manual transmission will fit onto a 70s chevrolet 350 v8?

There are many that fit those...You could find a Muncie M21, M22 or even a really heavy duty version of the Borg Warner cast iron"rock crusher" transmissions (think they were sometimes used on the original "real" Z28 camaro with the 302 engines). There are tons of other units which were modified to fit as well. All those units used to be commonplace but you will need to search a bit to find one now..
Good luck

Apr 19, 2010 | 1983 Chevrolet Monte Carlo

1 Answer

Rebuilding 5 speed Muncie out of 88 beretta gt. Can't figure out how to split the housing. Separates about an inch then won't budge. Any tips??

muncie did not build a trans that was usded in this car, please verify transmission type, Gertag or Izusu 5 speed.

Mar 03, 2010 | Chevrolet Beretta Cars & Trucks

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