The Turbo 350 quickly became known for its strength, versatility, and compactness. Remove the side cover and forks for a look at the geartrain. possible Letters for the last ones are explained in the chart below. Before using any method to find your transmission type, you should find out if its a manual or automatic transmission. 14. According to Cangialosi, GM took the basic T-10 design and beefed it up to conceive the Muncie M20 and M21 four-speed transmissions, which arrived in 1963. 16. (AODE & 4R70W). More items related to this product. Muncie transmissions also tend to get performance improvements such as a gear ratio change and stronger internal parts. The 4 cylinder models have 4 large cooling holes near the torque converter, while on the "bigger cars" there are no cooling holes. According to Paul Cangialosi, Muncie transmission historian, technician, and author of Muncie 4-Speed Transmissions: How to rebuild and modify, the Muncie four-speed transmission has its roots back to 1935 and the U.S. patent number 3,088,336 along with an engineer named James W. Fodrea. This stamping is usually alpha code indicating the source of the trans followed by several numbers indicating specific month & day the trans was assembled. From the outside, you should be able to make out the number on the metal dash plaque by looking through the glass. Thediscussion about whether to use a four-speed or an automatic transmission has been going on for as long as anyone can remember, and we see no end in sight. Please click Accept Cookies to continue to use the site. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Slide under the car and locate the transmission. The T-85 three-speed transmission was one result of that merger. If you find an M22, you have the ultimate Muncie designed for the high torque of a big-block that will bolt to your small-block. YOU DO. 1991 and Newer Chevy Hardcore NEWSLETTER - SIGN UP FREE! You need to look . Because the Muncie has so much in common with the T-10 and even similar Saginaw boxes, it is easy to get this guy mixed up with non-Muncie units. We have salvaged more than one Saginaw from cars like the Vega and Monza. Expect to find various combinations out there because these high-performance four-speed transmissions have been thrashed, trashed, and rebuilt through the decades. There are two significant variations of the Turbo 400. If you are installing your transmission that was purchased from Monster Transmission, our sales and support staff is here. Engine Casting Numbers Explained 1954-1962 Chevrolet, Serial Number/Engine Type/Series Designation, On the flat part of the Distributor Deck you will find a stamped Serial Number. Others have a tag rivited to the case. General Motors used different transmission pan shapes and bolts for its models, so this method requires some knowledge of the pans. Transmissions have RPO numbers, usually beginning with "M". (1: Chevrolet, 8: 1968, L: Van Nuys, CA, 165790: last 6 digits of VIN). Outside that, you can push in your clutch and hold the brake. S = Saginaw 3-speed A = 68/69 L6 Torque-Drive K = McKinnon 3-speed C = Cleveland Powerglide . Nowadays, most drivers are more familiar with automatic cars, and manufacturers mostly use automated transmission systems. The identification problems mostly happen with the older 4-speed manual models. The Turbo 475 was an extra-heavy-duty version and was found in larger trucks from 1971 on. Whats The Reason Enthusiasts Cant Get, Yes I Am A Dinosaur, And Why I Feel Electric Cars, Step-By-Step Birth Of A QA1 Adjustable Racing Shock, Readers Rig: Sterling Diesels Duramax-Powered C10, What I Learned Today With Jeff Smith Ensuring Wrist Pin Clearance, Corvette Enthusiasts Use Media To Share Z06 Delivery, Fenix Is A Next-Gen 69 Camaro With 1,180 Horsepower, Shop Tour: Brian Tooley Racing Expands To Be A One-Stop Shop, Moroso Anti-Roll Kit Is The Right Tool For The Dragstrip, Near where the shift linkage attaches to the body, Just above the housing on the right side of the pan, On the passenger side on a flange by the bell housing. The differential ratio is stamped on the passenger side axle tube. What makes the small-bore and large-bore case Muncies different is the input shaft bearing size and first gear, which rode on the mainshaft void of a bushing for 1963. Did you know that there are various models that were used in various cars? my Saginaw #'s . The 465 is an intellegently designed . THM375B - This trans is identical to the THM350, but is considered a heavier duty transmission. The Turbo 350 transmission was prevalent in nearly all GM, rear-wheel-drive cars and trucks through 1984. Its useful to know the trim of your car so you can easily determine the transmission type. 1976-1987. Older vehicles are quite different because theres a lot of variety when it comes to transmission systems. Before 1967, General Motors included extra information such as the plant code, shift code, and date of production on the ID tag. . Drivers dont usually have a problem with identifying modern manual 5-speed and 6-speed transmission systems. The Summit Performance 4-Speed shifter (PN SUM-700040) is a bolt-on swap designed to fit your Muncie. Looking for a Muncie shifter engineered to fit within your budget? 4L80 - An overdrive model of the THM400. Other than the shape of the fluid pan, another key way to identify the Turbo 350 is by the vacuum modulator. The gear ratio of the Chevy four-speed transmission placed in any car was usually determined by the engine size and rearend axle ratio. Side-by-side are the two countershaft support sizes, which are 7/8-inch (left) and 1.000-inch (right). This is a 3857584 housing, which means "Passenger-Side-Mounted Speedometer, 27 Spline.". . // Stouffer's Discontinued Products, David Hayden Obituary, At First I Was Given Centuries By Margaret Atwood, How Does The Poem Truth By Nikki Grimes Use Alliteration, Caltech Associates Membership, Articles G