Muncie 4 speed manual transmission fluid

It was a matter of economics when chevrolet needed a four speed manual transmission for the corvette in the mid1950s. If you have an automatic transmission the transmission dipstick which is generally easily visible in the engine bay, is a constant reminder of regular automatic transmission maintenance. When looking for a muncie 4speed, there are many available at local swap. Muncie, borgwarner t10, or super t10 4speed transmission. You should change the gear oil every 3 years or 15,000 miles whichever comes first. I was wondering what synthetic fluid would be good to use in my muncie. A gl4 lubricant provides adequate protection for most manual transmissions, unless a unique design. The letter o would add confusion since it resembles zero. This meant that the transmissions front bearing retainer and register bore of the bellhousing were also smaller in diameter.

Wondering what fluid to used in your manual transmission. A muncie transmission differs from a saginaw transmission in that its reverse lever is in the tail. Muncie fourspeed manual transmissions came in many gm models of the 60s and 70s. Muncie 4 speed transmissions 5speeds transmission home page. The letter m was used to id the muncie plant for the muncie 3 speed, so p was the next logical letter. This layout is a 4speed transmission with four forward gear ratios in the main case, a midplate bearing support, and a reverse gearset in the extension housing. New process gear np435 4speed longitudinal transmission used in a select handful of 6772 gm pickups. Most manufacturers of manual transmissions and transaxles recommend an 80w or 90w gl 4 lubricant. Gl5 gears oils which are required in hypoid differentials are not used in most synchromesh transmissions because the chemicals used to provide the extreme pressure protection can be corrosive to synchronizers, which are commonly made of brass or. The basic design and operation theory of the gearbox changed little during that time, though several design upgrades and modifications were made during the total production run. I discuss some of the new oils today for manual transmissions and take apart a muncie 4 speed that welded up. Muncie, borgwarner t10, or super t10 4speed transmission oil. Midwest muncie specializes in only muncie 4speeds unlike any other transmission builder and has been specializing in restoration and building of muncie 4 speeds since 1976.

Also available with front nut wrench andor cluster pin. Muncie 4speed manual transmission auto gear equipment. When filling your 465 with gear oil, we recommend that you select a. Saginaw and borg warner models are normally used on general purpose applications. All m2122 have the same 22% upshift and 28% downshift spread as the gear vendors.

Muncie transmission are covered in this section light duty, rear wheel drive rwd, 3 speed applications. Guide to muncie m20, m21, and m22 fourspeed transmissions. Paul cangialosi has been involved in the manual transmission parts and rebuilding business since 1981. The main case oil pans on the m20 and m21 did not have a fluid drain plug. We offer many high quality muncie 4 speeds for your 60s to mid 70s gm car. The muncie case 3831704 replaced the t10 4speed in the 1963 chevrolet bel air and corvette by midmay of that year.

The sm420 was made by general motors from 1947 to 1967. Synthetic fluid in these gearboxes, while not harmful, is probably an economic waste. So youve decided to slam four with a gm muncie transmission. It was a matter of economics when chevrolet needed a fourspeed manual transmission for the corvette in the mid1950s. There should be a bellhousing in between the engine and manual gearbox. Muncie 4 speed transmission parts,gears,bearing kits,synchro rings and more. It is important to use the correct fluid oil in you manual transmission, the vehicle manufacturers have done extensive testing to specify the correct fluid. The oil you choose for your manual transmission might just save its life words. Hurst chevy inline ram rod 4 speed drag racing shifter muncie transmission. I took the time to research the patent number that is cast into most muncie main cases. I drained the richmond gl6 gear lube that i had in since last year, my muncie has a drain plug. The new venture gear 3500, commonly called nv3500, is a 5speed overdrive manual. Properly assembled manual gearboxes do not have the thermal strains seen. One of the most common swaps involves a muncie 4 speed.

Aug 22, 2015 if you have an automatic transmission the transmission dipstick which is generally easily visible in the engine bay, is a constant reminder of regular automatic transmission maintenance. Among oldtimers, the muncie transmission commands a certain degree of respect. Having issues diagnosing problems with your m21 m22 4 speed muncie manual transmission. The sm465 is an outstanding, heavyduty truck transmission designed and used in. Changing the oil on these transmissions can be tricky, as the oilfill port is on the side of the transmission. The sm465 can be found in chevrolet and gmc fullsize trucks, blazers, suburbans, among other models. Military specification versions were made through the early 1980s.

One of the most common swaps involves a muncie 4speed. These quality manual transmission parts, rebuild kits and overhaul kits are designed to be top of the line overhaul kits. These are easy to adapt to a wide range of hot rods. These words are very similar for the m20 and t10 but with some slight ratio differences depending on model. It is important to use the correct fluid oil in you manual transmission, the vehicle. Oct 03, 2008 use a fill tube to add transmission fluid. According to paul cangialosi, muncie transmission historian, technician, and author of muncie 4speed transmissions. Introduction to rebuilding gmmuncie 4speed transmissions. The muncie sm465 is a heavyduty, four speed manual transmission built by general motors for use in light and medium duty trucks from 1968 to 1991. Muncie and borgwarner t10 and super t10 4 speed manual transmissions sit underneath the car hidden away like a groundhog burrowed deep in a ground hole. The serial number is a date code the transmission was built for a particular year. The sm465s for example were used in 19681991 general motor trucks fluid capacities should be in.

The muncie 4speed transmission was used from 19631974 on several different gm vehicles and engine types. Gl4 and gl5 oil transmission lubrication oils explained youtube. General motors stopped installing muncie 4 speeds in 1974. If you are not sure how to distinguish between an m20, m21, or m22 muncie, knowing what to look for can be tricky. How to identify chevy 4 speed transmissions it still runs. Muncie sm420 manual transmission overhaul kit these quality sm420 manual transmission parts, rebuild kits and overhaul kits are designed to be top of the line overhaul kits. It has a granny low and so then just 3 normally usable ratios. See final drive ratios and notice continue reading gm truck manual.

Jun, 2017 the muncie fourspeed transmission was heralded by many as an indestructible four speed used by general motors, and found its way into many different car models, behind various engine combinations between 1963 and 1974. Muncie sm420 4speed manual used up to 1967, very similar to sm 465 except small changes to gear ratios and location of reverse. Changing the oil on these transmissions can be tricky, as the oilfill port is on the side. That the muncie has much in common with the t10 is no accident. Some applications beyond oneton pickup trucks came with larger input shafts. Heavy duty competition overhaul kit for muncie 4 speed transmissions, 19661974. Transmission mounts muncie four speed transmission type. They are found primarily in gm and chevrolet trucks, blazers, suburbans and many other models falling under the 14ton to 112ton platforms. To view links or images in signatures your post count must be 10 or greater. To understand the evolution of the muncie 4speed you have to look at a series of engineering platforms that led to the final design of this transmission. We have mentioned several transmission swaps over the last 6 months, but another. The t10 front bearing size was reduced in diameter in 1963 only. Gms goal with the muncie four speed was to produce a better shift employing larger synchro cones. The muncie fourspeed transmission was heralded by many as an indestructible four speed used by general motors, and found its way into many different car models, behind various engine combinations between 1963 and 1974.

The novak guide to the gm muncie sm420 transmission. The muncie 4 speed transmission was used from 19631974 on several different gm vehicles and engine types. Complete overhaul kit for muncie 4 speed transmissions, 19661974. The muncie 4 speed,was first designed in 1963,and lasted until 1974.

Find muncie 4 speed transmission from a vast selection of manual transmission parts. A gl 4 lubricant provides adequate protection for most manual transmissions, unless a unique design. The muncie 4speed transmission was used with many different gm models and engine combinations from 19631974. General motors 19631974 general motors high performance auto gear equipment 530 state fair boulevard, syracuse, new york 204 800 6343001, inside new york. Milder gm cars used saginaw or borgwarner fourspeeds. Learn tips for adding fluid to manual transmissions in this free car maintenance video from a professional mechanic. Aug 07, 2018 that the muncie has much in common with the t10 is no accident. Last time we talked about how to distinguish a muncie fourspeed transmission from a saginaw or borgwarner and the different types of muncie. Shifter handle and shift mechanism if 3 or 4 speed equipped transmission and bellhousing throwout bearing, clutch fork and fork pivot this system is designed to use dot 4 brake fluid. Aug 03, 2018 according to paul cangialosi, muncie transmission historian, technician, and author of muncie 4 speed transmissions. Therefore, the muncie patent is basically a design for the layout of a 4speed transmission.

I have what appears to be a transmission fluid leak, covering the. The extreme pressure requirements of spur gears and helical gears found in transmissions are not nearly as great as found in rearwheel drive differentials. I can also add that many manual transmissions on the road today from the 70s, 80s, 90s and made on various continents, not just muncies from 63 or so as installed on corvettes do in fact suffer from less than likenew perfect performance because. Gm manual transmissions muncie m21m22 also m20 and bw t10 gear vendors owes a lot to the muncie close ratio trans.

The sm465 was made by general motors from 1968 to 1991. Muncie 4 speed manual transmission fluid click here to download muncie, borg warner t 10, or super t 10 4 speed transmission oil change. Muncie 3 speed manual transmission parts, rebuild kits and. Transmissions are an essential part of hot rod builds. I dont have an owners manual and the question just came to me since i was on here reading about tranny fluids. The muncie 4speed transmission was used from 19631974 on several different. Jul 29, 2016 last time we talked about how to distinguish a muncie four speed transmission from a saginaw or borgwarner and the different types of muncie transmissions, including the wideratio m20, the close. Favored by offroad drivers, the sm465 has a very low first gear.

The muncie sm465 is a heavyduty, fourspeed manual transmission built by general motors for use in light and medium duty trucks from 1968 to 1991. He tells us both the m20 wideratio and m21 closeratio transmissions were first offered in 1963. What type of fluid is used in a muncie 4 speed answers. The oil is designed to reduce friction and provide necessary cooling. Introduction to rebuilding gmmuncie 4speed transmissions includes indepth instruction and photos. Muncie and borgwarner t10 and super t10 4speed manual transmissions sit underneath the car hidden away like a groundhog burrowed deep in a ground hole. A muncie differs from a saginaw transmission in that its reverse lever is in the tail housing, not the side cover. The ultimate master rebuild kit for muncie transmissions. Customs services and international tracking provided. We have include information on how to identify individual transmissions, application information, model year, detailed kit and part availability by transmission type. More info on performance mods, clutches and shifters. Also covers how to disassemble and rebuild any manual transmission. 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.

Muncie transmissions are known for both highperformance and heavyduty applications. Muncie four speed manual transmissions came in many gm models of the 60s and 70s. Muncie 3 speed ld manual transmission overhaul kit having problems with your muncie 3 speed muncie model 318 or 319 manual transmission, need parts. The shifting pattern for the 465 is in the standard h pattern with reverse gear being to the right side, and down. The seals in this system are not compatible with dot 5. Best gear oil to use in a muncie m20 team camaro tech. Serial numbers from 1963 to 1966 included only the. The muncie was typically used in performance engines. Muncie sm420 manual transmission overhaul kit drivetrain. Saginaw transmissions were cheaper, and worked admirably, but scattering gear oil on the pavement was a scary reality if you pushed them too hard. Muncie 4speed transmissions hemmings hemmings motor news. C3 general 1970 muncie 4speed fluid question hello, i have what appears. I have a 65 impala and right now im using regular 80w90 weight. Note ct0 chevrolet, transmission, 1970 and 42862 serial number.