1969-1986. GM manual transmission identification. 1965 and Newer. On the THM400 the VIN is stamped on a machined surface just above the pan on the drivers side. The 1956 through 1962 Corvettes only used the aluminum versions. Manual Trans Reference GM 3, 4, 5 and 6 speeds V24 How to identify chevrolet gmc manual transmissions Use the following information to compare physical description of your Chevrolet or GMC manual transmission in order to identify what model transmission is in your vehicle. Step-By-Step Birth Of A QA1 Adjustable Racing, Readers Rig: Sterling Diesels Duramax-Powered, What I Learned Today With Jeff Smith Ensuring Wrist Pin, Whipple Is Bringing Gen 5s Together With 3.0L Blower And, Boost Life Made Easy With The Summit Racing Pro LS Turbo, Steer Your Classic Ride Straight With A New CPP Steering, The Malibeast Chevelle Is a Supercharged Street, Dakota Digital Answers Your Setup, Calibration, And Warranty, Kelly Harveys Single-Turbo, LSX-Powered Drag-And-Drive, Saved From The Scrap Pile: Pernell Spohns 1960, SEMA 2022: GEARWRENCH Leveled Up With Distinct Quality Hand, Reignite Your Cat Eye Silverado Headlights With, SEMA 2022: Paragon Corvette Adds Performance Parts To, PRI 2022: FuelTech Talks About The Tech Of The FT700, PRI 2022: Concept Performance Now Offers Aluminum LTR, PRI 2022: Get Locked In With Forgeline Beadlock, Creative Automotion: The Art of Farmtruck &, Randy Bolig The Media Mover And Shaker Behind Chevy, How Ken Lingenfelters Love for Corvettes Benefits So, Shop Tour: Brian Tooley Racing Expands To Be A One-Stop, Shop Tour: Prestige Motorsports Is Your One-Stop Hot Rod, Full Factory Tour: How Edelbrock Makes Its Cast Aluminum, HOLY SHIP! My question is will this direct swap to a '81 with the 3 speed saginaw? K 170. He tells us both the M20 wide-ratio and M21 close-ratio transmissions were first offered in 1963 . While casting numbers are a definite guideline for identification, a quick, somewhat accurate way to quickly identify Muncie transmissions involves the input shafts. Its no secret that the Saginaw and Borg Warner transmissions were not built to handle the kind of power that a Muncie transmission could withstand. This page covers automatic trannies. The fluid pan shape is irregular, being likened to distorted Texas state borders. For example, a GM vehicle from before 1967 has an ID tag that looks like C123N. Identify General Motors' Four-Speed Transmissions 1 groove: First 2.54, Second 1.84, Third 1.32, Fourth, 1.00 2 grooves: First 3.11, Second Discussion in '1947-1954' started by Blueflame236, Dec 15, 2012. . Prior to 1967, transmission ID numbers contained the plant prefix code, month and date of production (expressed numerically), and a shift code (D = Day, N = Night). Transmisson Tech Info & Product Instructions. By 1963, the General had developed and worked with the Saginaw Corporation to develop a proprietary Chevy four-speed (based on components used in the Borg-Warner transmission). The Muncie 4-speed transmission was used with many different GM models and engine combinations from 1963-1974. Pre-67 Example: C213N - (C = Cleveland Powerglide, February 13, Night Shift) +$20.00 shipping. box FWIW. This is because the transmission lengths are the same and the positioning of the cross member can be easily modified, you only need to change the transmission mount, add transmission cooler lines, and update the shift indicator to a Turbo 350 pattern to complete the exchange. We're transmission experts, recognized by some of the greatest and most notable technicians in the automotive industry. For 1964 and beyond, it rode on a bushing between it and the mainshaft. There is no leaking coming from the front seals, rear sears or oil pan. Once you identify the pan, count the number of pan bolts for confirmation. This one will have a CONveyor Number and beside that It also has the numbers "4.3" cast in the block itself, which makes it easy to spot as the smaller 3.74-inch-bore block. Almost all Muncie transmissions were delivered with a groove(s) on the input shaft and counter gear. We are dedicated to giving you the technical support you need, when you need it! Like I said, the Muncie HD is a lot heavier. fileslib. Performance parts such as Hurst shifters were just as readily available for 3-speeds as with 4-speeds. Theres a good number of vehicles that make use of both manual and automatic transmissions. Manual transmission systems are straightforward to spot. After 1967, GM switched things up and changed the code structure. The most common GM 4-speed transmission types or groups are Muncie, Saginaw, and Borg-Warner. It was standard equipment on large displacement, high-torque engines, and is generally found in trucks, and full-size GM rear-wheel-drive cars. What you will find in your search for the right Muncie four-speed is conflicting information from different sources. The vehicle identification number (VIN) is a unique identifier for each vehicle (VIN). The constants in decoding the trans ID number are the date the transmission was produced. The muncie reverse lever is in the extention housing, and the cover has 7 bolts. You have to decode these simple codes to read and understand the information. Author and technician Paul Cangialosi tells us the original U.S. patent for the Muncie four-speed was filed on November 29, 1957, and approved May 7, 1963. Set up the wheel chocks behind the tires so theyre firmly on the ground. The transmission codes are found on the Protect-O-Plate and in the following locations: . The easiest method of GM automatic transmission identification is to examine the transmission pan. The output shaft has the code # of 14030874. You can use things like the pan material, length, and shape to identify it. While its obvious that the four speed will use three shift-linkage arms and the three speed will have two, if the first letter is R, then you have found a four speed. 60 is the strength rating (less than the 4L80). We said almost all Muncie transmissions had a groove(s) around the input shaft, and that is because most close-ratio Muncies will have one ring around the input shaft. If you have a project car from Chevrolet, Buick, Pontiac, or any other GM brand, youll want to identify the transmission. I promise you that the next transmission I have to replace or any other person I hear of needing a transmission I will be heavily promoting Monster Transmission and tell them that I personally use Monster Transmission. Use the shifter to shift gears and note the number of times it shifts. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. More items related to this product. The bearing bore size was also one year only with a #6207-style input shaft bearing, according to Cangialosi. Remove the side cover and forks for a look at the geartrain. From 1950-1973, most GM divisions used the iconic Powerglide transmission. From the outside, you should be able to make out the number on the metal dash plaque by looking through the glass. You can also use VIN decoders to identify your transmission. 11. Prior to 1967, transmission ID numbers contained the plant prefix code, month and date of production (expressed numerically), and a shift code (D = Day, N = Night). document.write(theYear) The (center) Borg Warner (right). However, there are some methods you can apply to determine the transmission type your car uses. General Motors is an innovator in the automobile industry, and they were one of the early adopters of the automated transmission system. You can use a variety of stock and aftermarket shifters on any of the Muncie tailshaft housings. Fodrea's legacy is far-reaching, extending into popular transmissions around to this day, yet most have no idea who he was. The easiest way of knowing your GM transmission is by using a VIN decoder. The length of the unit can also tell you a few things. 20. This is usually a 7 digit number and each letter/number is about 1/2" tall. Dave loves music, design, tech, current events, and fitness. From 1967 on, the ID number contained the transmission type or plant prefix, Date (coded below), and a shift code. Thanks Dec 11, 2012 #2 G Gary S Administrator Lifetime Gold Member Apr 14, 1999 24,823 These grooves are there to indicate the ratios of the gears inside the transmission. Post-67 Example: P9E03 (P = TYPE, 9 = year (1969), E = Month, 03 = Day of Month), Month code: 2023 Power Automedia. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! The plant code was a prefix, while the production date had a numerical value. Of course, restorers and rebuilders will tend to re-stamp the date code to suit a particular restoration. VIN decoders are helpful, and they come in handy when you need to know more about your vehicle. Facebook, Tesla's electrokineticand electrogravitic machineAir Ship Designs 1911, IEEE Computer Magazine Special Issue on Making: Free Download, 2023 Created by Wil Cashen. Anything after that time period will say US Patent No 3088336. Identify General Motors' Four-Speed Transmissions 1 groove: First 2.54, Second 1.84, Third 1.32, Fourth, 1.00 2 grooves: First 3.11, Second CAUTION: This transmission closely resembles 343 Saginaw. You need to look . You can find the exact transmission you have. Become a VCCA member! It was standard equipment on large displacement, high-torque engines, and is generally found in trucks, and full-size GM rear-wheel-drive cars. Show More Show Less. Further Muncie identification The number of bolts fastened to the pan is a way of being sure of the transmission system. The trailing letters denote what the engine was installed in. On the THM200-R4 the VIN is stamped onto the housing towards the rear of the pan, on the drivers side. M33 This standard Turbo 350 code identifies it as a standard Turbo 350. One more way to identify the Muncie is via stamped codes in the case, which indicate when the transmission was built at Muncie (see How To Read Muncie Build Date Codes chart). Expect to find various combinations out there because these high-performance four-speed transmissions have been thrashed, trashed, and rebuilt through the decades. On 72-77 vehicles, the switch is located over the accelerator pedal. 4L80 - An overdrive model of the THM400. This is what "The World's Best Chevrolet Club" is all about! When repairing or restoring your Chevrolet car or truck, identifying the transmission youre running is a key element to avoid the automotive version of quicksand. While the Chevy four-speed manual transmission was a staple in many muscle cars, even many of the Generals other car models were equipped with a manually operated gear selecting device. They are notoriously very hard to read and often people make the mistake of thinking a '3' is an '8'. Main cases manufactured prior to May 7, 1963, will say Patent Pending. The first letter will be either. Before you can identify the transmission pan, you have to access it from under the car. . The Muncie utilized seven different input shafts. 1. Cangialosi tells us all M20 and M21 transmissions were produced with both 10- and 26-spline input shafts. If the gear shifts five times, its a 4-speed transmission. CAUTION: This transmission closely resembles 343 Saginaw. Like Cobalt said, it is very easy to mistake a 6 for an 8 in these castings. The Identify the Transmission You Have. VCCA members have access to a list of over 50 Technical Advisors who can help you with your car. The right side numbers are 3925658 8338GM NFc4. hey Bob .I wish I could help out with your numbers on the trannys. Starting with the 1966 models, the wide ratio versions got two rings around the input shaft, and the M22 input shaft had no rings and looks like a 1963 through 1965 wide-ratio input shaft. Sep 23, 2019. Found on 76 through 84 models. Good, solid, rugged construction makes it a terrific drop-in for around $100. It was a matter of economics when Chevrolet needed a four-speed manual transmission for the Corvette in the mid-1950s. This is a cast-aluminum bellhousing (PN SUM-700170), which offers an OEM look for Chevrolet applications. Transmissions can be identified in the following manner: Casting numbers : Located on the case, extension housing and side cover (manual). The T-85 three-speed transmission was one result of that merger. How to identify and decode chevrolet manual transmissions. These grooves were cut into the input shaft so assembly line workers at the plant could easily identify which input shaft should be installed in a particular unit. Removal of the front bearing cover is where disassembly begins. Before using any method to find your transmission type, you should find out if its a manual or automatic transmission. WE ARE READY TO SUPPORT YOUMon - Fri 9:00am - 6:00pm EST. The next set of numbers you will find helpful are on the flat part of the Distributor Deck. The casting number 3925660 denotes this as a 1968 1970 Muncie with a 1-inch cluster shaft. When you have the two side-by-side it becomes obvious which is which. Note the single groove, meaning an M21 close-ratio. Youll not only need to hunt for, and hopefully find the tag, but it needs to be free of enough gunk to be legible. Vehicles leaving the factory with an axle ratio of 3.55 and numerically lower gears, typically incorporated a wide-ratio transmission. However, classic cars usually have manual transmissions. We have salvaged more than one Saginaw from cars like the Vega and Monza. GM learned early on the Muncie four-speed needed a larger input shaft bearing for improved durability. Here's a typical Muncie gearset consisting of First, Second, and Third gear. The M22 was designed as a road race transmission, and the straighter angle of the gear teeth produced less heat and less end-loading of the gears. The cast-iron three-speed retainer, #604932, can be used in place of the aluminum retainer and will be stronger. This is when you have to remove the side cover to see what's inside. Prior to 1967, transmission ID numbers contained the plant prefix code, month and date of production (expressed numerically) and a shift code (D = Day, N = Night). This is a large reason why some guys will not rely on transmission identification by the input shaft grooves. You don't have to search the classifieds or a junk pile to find a suitable bellhousing for your Muncie M20, M21, or M22. 2.1Date codes 3GM transmissions, including Muncie M20, M21, M22 4Automatic transmissions 4.1AMC automatic transmissions, 1972-'06 4.2AMC automatic transmissions, 1955-'71 4.3Jeep automatic transmissions, 1971-back 4.4Transmission dimensions 4.4.1Ford 4.4.2MOPAR 4.5Ford automatic transmissions 4.5.13-speed identification 4.5.24-speed identification Looking Up The 17-Digit Vehicle Identification Number. Making this separation makes the job easier. my Saginaw #'s . S = Saginaw 3-speed A = 68/69 L6 Torque-Drive K = McKinnon 3-speed C = Cleveland Powerglide . According to Koval, the easiest way to identify an automatic transmission, though, is by transmission pan shape. The Muncie four-speed, like the T-10, is a side-loading transmission. The T-10 four-speed was an evolution of the T-85 three-speed transmission, with both of these transmissions being quite similar in appearance. The pan contains several stamped numbers and codes informing readers about the transmission system. Randy Bolig has been working on cars and has been involved in the hobby ever since he bought his first car when he was only 14 years old. Muncies are the hot tip, since they usually were used with high performance engines. If you do happen to stumble across Chevy four-speed at a swap meet, do you know what you are actually looking at? I live in Covington, Tennessee and I just had my Monster Transmission installed in my 2001 Dodge Ram and I'm completely happy with it. Not only are the Saginaw and Borg Warner side cover and tail housings constructed of different materials, but the reverse shifter arm of a Saginaw is on the side cover while the T10 is located on the tail housing. Vehicles leaving the factory with an axle ratio of 3.55 and numerically lower gears, typically incorporated a wide-ratio transmission. Transmissions have RPO numbers, usually beginning with "M". The 4 cylinder models have 4 large cooling holes near the torque converter, while on the "bigger cars" there are no cooling holes. Standard Borg Warner H.D. Search transmissions by vehicle's VIN, License Plate, or Year/Make/Model information. The Borg Warner has a 9 bolt cover. For example, replacing a Powerglide with a Turbo 350 is an easy swap. Some of these methods are: All the above-listed methods are dependable ways of identifying a cars transmission. Check through the information for your transmission identification. In 1974, the two-speed box then went to the great scrap heap in the sky. It was phased out of use and superseded by GMs 700R4 starting in 1982.

Current Picture Of Kc And The Sunshine Band, How To Submit Your Wedding To Vogue, Ira Training Camp Donegal, Cheap Apartments For Rent Dutchess County, Ny, Norfolk State University Director Of Admissions, Articles G