The reason is that 4th gear on a muncie style trans locks the input and output shafts together. The device for achieving an overdrive transmission was usually a small separate gearbox. The book gives lots of good information on all kinds of stuff about muncies, and the step by step disassembly and reassembly portion is great and has good pictures. Unfollow muncie 4 speed transmission to stop getting updates on.
These gear boxes were used when power levels exceeded the limits of the early borg warner t10 4 speed. One of the most common swaps involves a muncie 4speed. Installing a 40 tooth reluctor and vss in a muncie 4 speed. They werent very common, shifters also hard to find unless reconfiguring can be done. I guess i could have changed the rear end ratio from 3. Brand new overdrive equivalent muncie 4 speed ebay. The muncie m20 was a wideratio transmission and was intended for basic street driveability and basically for. Save muncie 4 speed rebuild kit to get email alerts and updates on your ebay feed. This means that all the gears in the transmission, except for reverse, are always meshed together and spinning, even in neutral. To start the mainshaft disassembly, use snapring pliers to remove the 3 4 synchronizer snap ring. Please know that your positive feedback and 5 star rating on ebay to us is appreciated, vital and very valuable to the continued success of our business. It is a good idea to understand the basics of your muncie 4speed before you start rebuilding the transmission.
Saginaw and borg warner models are normally used on general purpose applications. This had the same gear ratios as the m21 but with a heavy duty gearset. Remove 3 4 synchro hub professional mechanic tip usually the gear and 3 4 synchro hub dislodge if you hold third gear and gently tap on the front of the mainshaft. Mark a jones deltona florida on auto gear super case m22z rock crusher 4speed. Muncie transmissions are known for both highperformance and heavyduty applications.
Muncie 4speed transmissions by paul cangialosi overdrive. Comes with the shifter and grip, as well as a new in the box correct shift rod assembly correct for this application. Ironically, the muncie was designed based of of the t10 using its same basic layout. Gm manual transmissions muncie m21m22 also m20 and bw t10 gear vendors owes a lot to the muncie close ratio trans. The muncie 4 speed,was first designed in 1963,and lasted until 1974. If you buy a muncie rebuild kit online its plug and play with the help of this book. Muncie 4 speed transmission parts,gears,bearing kits,synchro rings and more.
Looking at it closely, with a bit of work, you could use mostly all of your existing 4spd muncie stuff, even the cross member and perhaps the driveshaft. The primary fourspeed manual transmissions used by chevrolet are the saginaw, muncie and borg warner models, with saginaw and muncie units being specifically made for chevrolet. Craigslist search, craigslist is no longer supported. All m2122 have the same 22% upshift and 28% downshift spread as the gear vendors. Muncie m22 4 speed wide ratio gear set, 10 spline, gkm22w10. Overdrive is the operation of an automobile cruising at sustained speed with reduced engine. If you have a need to install a 40 tooth reluctor and vss in a muncie 4 speed the one i modified was the later series muncie 4 speed with the standard size output shaft it can be done pretty painlessly. Will fit all m21 and m22 transmissions with the 1 counter shaft bore. When you shift you are locking a particular speed gear to the mainshaft. Jun 22, 2016 several things are needed to identify a muncie four speed transmission correctly. I know there are a lot of threads on this topic but it is a tricky one. How to mate a muncie fourspeed with an ls engine hot rod.
Successfully diagnosing transmission problems is directly related to how well you understand how this transmission works. Came from factory with 4 speed pulled the original engine and transmission. Identifying muncie 4 speeds iii by paul cangialosi the most popular question has to be that everyone thinks they have the famous rockcrusher m22 4 speed. Since your muncie or borgwarner is stronger than any nonrace 5 or 6 speed, the gear vendors is just he right way to get overdrive in your gm manual.
General motors 19631974 general motors high performance auto gear equipment 530 state fair boulevard, syracuse, new york 204 800 6343001, inside new york. I know it doesnt have the good old muscle car 4 speed look, but it has overdrive. Therefore without a total redesign 4th gear cannot be overdrive. The saginaw is a light and medium duty transmission while the. Nov 29, 2014 paul cangialosi discusses the features of the drag special muncie m22 4 speed and explains some of his basic rebuilding tips. The muncie 4speed transmission from general motors is one of the most popular and widely used transmissions in the racing and rodding industry. General motors is an innovator of automatic transmissions, introducing the hydra matic in 1940. Transmission expert and veteran author paul cangialosi has created an indispensible reference to muncie 4speeds that guides you through each crucial stage of the rebuild process.
Jeff collins on racing muncie slick shift clutchless super duty m23 super case 4speed drag racing rockcrusher. Early muncie 4speed identification ecklers automotive. Transmission expert and veteran author paul cangialosi has created an indispensible reference to muncie 4 speeds that guides you through each crucial stage of the rebuild process. Borg warner t86 3 speed and r10 overdrive nash healey rebuild. The r10 overdrive unit will be cleaned, inspected and worn parts replaced as needed.
Determine your engines rpm based on the transmission gear ratio, tire height, mph and the. Gm automatic overdrive transmission builders and swappers guide sa design. Muncie 4 speed transmissions were used in general motors cars from 1963 to early 1975. How to disassemble, clean, and rebuild a muncie 4speed. One of the best ways to identify a muncie is the casting numbers on the external components of the transmission. The muncie 4 speed transmission from general motors is one of the most popular and widely used transmissions in the racing and rodding industry. Muncie 4 speed transmission rebuild kit m20 21 22 for 78 or 1 pin. Pdf download munice 4 speed transmissions free ebooks pdf. Whether it was a series of lucky choices, or happy accidents, the 1957 design allowed for improvements. No other book goes into this much detail on the identification of the muncie 4speed, available parts, selection of gear ratios, and the rebuild process. Inexchange for fords 10speed transmission, general motors will let ford use its. Awesome pro tour 1967 chevrolet camaro rally sport powered by a show and go ls1 engine, custom built muncie 4 speed manual transmission with overdrive and a bullet proof 9 inch rear with a 3. Add to that, at 65mph the engine was running 3,500rpm couldnt stand the noise.
Get your kindle here, or download a free kindle reading app. I have a 1973 z28 bought new i have a 383 500 horsepower in it. Though i may look into the gearvendors because they claim that you install on the back of the t. I built my coupe old style as you can see, and i thought the muncie would fit that bill. One of the most common swaps involves a muncie 4 speed. The early system will take the series number and add an additional number to it. The muncie 4 speed was created in response to the engine power levels in gm vehicles exceeding the limits of an earlier transmission, the borg warner t10 4 speed. They make 3rd gear the overdrive gear to get around this, and thus the shift pattern is all screwed up. You can buy an overdrive gearset for a muncie 4 speed that gives you an overdrive gear in 4th theres still just 4 speeds. The 1963 transmission had a smaller front input shaft bearing and a specific front bearing retainer with a smaller outside diameter than the muncie transmissions from 1964 and up. It was primarily designed as a road race transmission.
The 3 4 slider and keys fell out when i removed the mainshaft. The new chevy zz4 engine and kugel independent rear end are new modern components the muncie just didnt fit in. Although the muncie 4 speed found it easier to handle engines growing power, its design borrowed from that of the t10 it was replacing and even used the same basic layout. We also offer transmission rebuild service and case repair. Rates for rebuilding are available by calling toll free 18776144327 and our friendly staff will be happy to discuss your muncie and its needs, and then quote you our shop rate and an estimate of total.
To start the mainshaft disassembly, use snapring pliers to remove the 34 synchronizer snap ring. The 350 chevy came stock with the muncie m20 or m21 4speeds, the borgwarner t10 and super t10 4 speeds, and the saginaw 4speed. A number of customers have asked whether we can build muncie in case overdrive gearsets like those they have seen in ford toploaders and chrysler a833s. These are easy to adapt to a wide range of hot rods. Super pro roaddrag race muncie super case m22 rockcrusher. Remove 34 synchro hub professional mechanic tip usually the gear and 34 synchro hub dislodge if you hold third gear and gently tap on the front of the mainshaft. How to identify chevy 4 speed transmissions it still runs. A833 rpo my6 or mm7 4speed longitudinal a833 overdrive transmission made. The muncie 4speeds, m20, m21, and m22 are some of the most popular manual transmissions ever made and continue to be incredibly popular. Gasser king on gasser muncie super duty m23 4 speed. Our experienced technicians will completely renew your muncie to factory original, in most cases, better than original condition. Muncie 4speed manual transmission auto gear equipment.
Bolts in and move crossmember to match and get driveshaft shortened. Midwest muncie muncie 4 speed transmissions and rebuild kits. The primary four speed manual transmissions used by chevrolet are the saginaw, muncie and borg warner models, with saginaw and muncie units being specifically made for chevrolet. I have a 86 2 wheel drive blazer with a moderately built 350. I convertedrebuilt a muncie m20 into a wide ratio m22 for my chevelle. Units will be disassembled, cleaned and rebuilt with new bearings, seals, gaskets and syncros. I was hoping that an overdrive would fit on the side of the sm420 where the pto cover is rather than the back of the tranny or transfer case. Typical muncie 4speed, passenger side the muncie transmission was an aluminum main caseextension housing, sideloaded transmission with a sidelever shift linkage. The overdrive is still a 4 speed, they make 3rd one to one and 4th od.
Not cheap though, even with a budget deal youll be into it for 23 34 of the price of a tremec 5 speed. If you want to learn about this stuff download our rpm calculator software for windows its free. The recommend it only for people who have too much money already invested in their rear driveline to redo it. A muncie is not going to hold up to 500 hp and slicks, but. I am planning to disassemble my spare four speed to replace a bad bearing.
And now with micro polishing of the internals questions. The more interesting component they have is a m20 wide ratio gearset with the reduced helical gear angle of the m22. Riversidegear offers complete muncie remanufacture service. Some also used a new process 4 speed of the same arrangement. 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. Faqs muncie 4 speed transmissions and rebuild kits. A muncie differs from a saginaw transmission in that its reverse lever is in the tail housing, not the side cover. Any variation of that gear will have a letter after the 12.
Other muscle car transmissions of that era, such as the ford toploader and mopar a833, left no room for improvements because of the layout and initial design of their. With such high usage of this transmission, the replacement and aftermarket. All new overdrive equivalent muncie 4 speed attention gm owners. Gmc chevy muncie 318 transmission rebuild kit 19541969 3speed w. There is a small section of video that has no sound due to the artist no longer honoring his agreement with me.
Muncie 4speed replaced with keisler 5speed hotrod hotline. These words are very similar for the m20 and t10 but with some slight ratio differences depending on model. Discover muncie 4 speed on sale right here with the biggest variety of muncie 4 speed anywhere online. Contact muncie 4 speed transmissions and rebuild kits. It now has a 350 turbo which i would like to swap out for a muncie 4 speed. The muncie was the top highperformance manual transmission gm offered in its muscle cars of the 60s and early 70s. Im sure they didnt come out till mid or late 63, you might have a t10, unless its not a stock original tranny.
The 4speed design of the t10 and muncie is a very forward design. Muncie 4 speed transmissions and parts riverside gear. No other book goes into this much detail on the identification of the muncie 4 speed, available parts, selection of gear ratios, and the rebuild process. Jeff collins on new auto gear super case muncie m22 4 speed rockcrusher streetstrip. Early muncie side covers had a stud and the shift arm attached with a nut on the stud while the 1969 and later model side covers had a hole and the shift arms attached with a bolt.
Tony vescio on gm 1963 to 1974 automatic to muncie 4 speed complete conversion swap kit. Automobile parts and service toggle navigation community chevy automotive sales inc. Identifying muncie 4 speeds iii by paul cangialosi. We carry a large selection of muncie 4 speed transmission parts, complete muncie transmission units, and cases. If you want to learn about this stuff download our rpm calculator software for windows. Waiting on new input nut for those that want to point it out that cone is not on. Biggest problem is the shifter location for the t5 with a bench seat. Imo its main appeal is to guys with restored chevelles and camaros that want to retain a muncie but have the od. Transmissions are an essential part of hot rod builds.
For sale is a m 20 1967 trans manufactured in kentucky for chevelles and elcaminos. Muncie 4 speed howling chevy message forum restoration. Paul cangialosi shares some of his muncie 4 speed rebuild upgrade tips. Find great deals on ebay for muncie 4 speed and muncie 4 speed transmission. Free catalog download is at muncie 4 speed synchronizer sizing and matching,deburring gears. Overdrive m21 muncie chevy message forum restoration. It was actually based on the t10 design and uses the same basic gear layout. The 34 slider and keys fell out when i removed the mainshaft. Muncie 4 speed community chevy automotive sales inc. From short tracks to drag strips and car shows to museums, the muncie transmission can be found in a variety of vehicles.
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