GMC Jimmy, Suburban & Yukon, Pickup & Van. According to CBN the low perf Saginaw 3spd in 6 cyl would be 2.94 in first and 1.68 in second. ZR1's with a 2.68 1st gear, 3.54 rear gear and a .59 overdrive. Serial numbers for Muncie 4 speeds always begin with the letter "P". Ratios of the M20, M21, M22. The 2.20:1 ratio first gear is usually referred to as the Muncie M21 transmission; based on GM's production codes. Muncie also had a second close-ratio transmission called an M22, which enthusiasts christened Rockcrusher; this was used in performance big-block engines and Corvettes and is a highly sought-after performance transmission today, and is the heavy-duty version of the 2.20 ratio M21 4-speed. Date code example: Muncie 4-speed: P1025 P (Muncie), 1025 (October 25th) TRANSMISSION GEAR'S RATIO 1ST 2ND 3RD 4TH GM Standard 3-Speed Manual (L6/283) 2.85 1.68 1.00 n/a On a scale of 1-10, with "7" being a Muncie M22, the Heavy-Duty B-O-P selector is rated as an "8". 1969 Muncie 3-speed B = 2.42 first gear ratio 1969 Muncie 4 speed only: A = M20 B = M21 Use of the Muncie type suffix C = M22 began with 21 Oct 68 production. 4-speed Right side of main case, just in front of extension housing. Oldamobile Cutlass Jetstar, Cruiser 88, Delmont, Delta, Dynamic, F88, Omega, Starfire, Vista & 442. (468) NEW VENTURE MG-5 (466) G.M. . Muncie also had a second close-ratio transmission called an M22, which enthusiasts christened Rockcrusher; this was used in performance big-block engines and Corvettes and is a highly sought-after performance transmission today, and is the heavy-duty version of the 2.20 ratio M21 4-speed. Muncie 3rd Gear 27 Tooth Auto Gear Italian or South Korean Made. If behind an engine that can stand 28mph in first gear they are a 6 speed trans but were usually used in 1st, 2nd, 2nd Over, 3rd, and 3rd Over which comes to 5 speeds. The letter M was used to ID the Muncie plant for the Muncie 3 speed, so P was the next logical letter. The 9" Ford rear is a 3:50 posi. It used an aluminum case and different gear ratios from the Saginaw 4-speed. Muncie M22 10 Spline Input Wide Ratio Gear Kit, GKM22W-10 Ratio 2.52 Fits GM Cars 1963-1974 with the Muncie 4 Speed 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. New OEM AC Delco gears are used in Muncie, GM T10, GM Super T10, Saginaw 3 & 4 speed, GM T5, Powerglide, 200 & 350 transmissions. The SM420 was made by General Motors from 1947 to 1967. (2) All 454 Chevelle applications. The classic Muncie four-speed transmission in all its many forms generally looks like this (this one provided by Anaheim Gear), though applications will vary in appearance. (example: P8R23 is assembled Oct 23, 1967 for 1968 model year. Since you are in the building and planning stages, and you want a 4 speed; the M22Z with a 2.98:1 1st gear ratio and a 3.08:1 differential gear is a great combination. Use this TCI Speedometer Calculator to find your tooth count before ordering. Notice that the Muncie synchro cone is larger in diameter for improved stopping power. The gear ratio of the Chevy four-speed transmission placed in any car was usually determined by the engine size and rearend axle ratio. com GM's Muncie SM465 manual transmission, used in light-duty and medium-duty GM trucks and SUVs from 1968-1991, has long been favored by off-road drivers for its low, low first gear that makes it ideal for rock crawling The SM465 was made by General Motors from 1968 to 1991 GM 4, 5 & 6 - Speed Manual Transmissions Kawasaki Mule Clutch Removal . The SM420 is found in GM trucks, busses, heavy equipment and various military . 4th Gear. Mark A Jones Deltona Florida on Auto Gear Super Case M22Z Rock Crusher 4-speed. Get the picture? The Muncie 3 speed was a Ford top Loader and much strong than a Saganaw. Muncie 330 (3 Speed (Rwd), Bearing Kit [CT-BK289] - $173.99 : Automatic, Standard Transmission and Transfer Case Rebuild Kits, Cobra Transmission Parts 1-800-293-1848, Cobra Transmission. GM 4, 5 & 6 - Speed Manual Transmissions. Muncie M22 3rd gear 27 tooth Italian or Korean. Muncie 4-speeds were produced in two different ratios wide-ratio (M-20) and close-ratio (M-21). Trying to find out the gear ratios on '58 to '64 regular 3-Speed transmissions, original for a 6 cylinder car. Muncie M22 3rd gear 27 tooth Italian or Korean. Model Application Input spline Counter shaft OD 1st gear ratio 2nd gear ratio 3rd gear ratio 4th gear M20 1963-65 10 7/8" only 2.56 1.91 1.48 1.00 M20 1965-74 10 or 26 1" only 2.52 1.88 1.46 1.00 M21 1963-65 10 or 26 7/8" only 2.20 1.64 1.28 1.00 . Click the link! All M21/22 have the same 22% upshift and 28% downshift spread as the Gear Vendors Next best in the muncie is redline shock proof heavyHere at Garage Motorsports we stock one of the largest selections of manual 3 speed OD, 4 speed Muncie, T-10 & AMC T-10 transmissions and new and used parts on the West Coast, Please see my other auction items . Chevrolet 3 speed manual transmission gear ratio 3 gm transmissions including muncie m20 m21 m22 4 automatic transmissions 4111 mopar at … Section 3 Manual Transmissions gear ratio of about 1:1 reduces engine speed at higher vehicle speeds when less torque is required to maintain momentum. Ratio Codes for Gearboxes. . Is there a 3 speed out there that has a deeper 1st gear, with a ratio, in the 3: 00 + range ? The 465 is an intellegently designed . Technical specifications. ZR1's with a 2.68 1st gear, 3.54 rear gear and a .59 overdrive. Muncie Transmission Identification. New Process Gear NP435 - 4-speed longitudinal transmission used in a select handful of 67-72 GM pickups Get the picture? Hurst Super Shifter 3 Muncie 4 Speed Transmission Shifter Wsuper Linkage Wlock $850.00 Muncie M21 Gear Set-rebuild Kit-sliders-more Close Ratio 4 Speed 10 Spline Input $769.00 . 1. An extra heavy duty close-ratio version (M-22) was also offered on many of the big-block high-performance models.The choice of transmission was dictated by the engine size and rear-axle ratio. Brand: General Motors. muncie 3 speed transmission gear ratios. 3-speed (Heavy Duty) Right side of main case, just in front of extension housing. If you've got a manual transmission, we're assuming it's a four speed, because (from what we can tell) Chevy dropped the base manual 3-speed after 1969. 3rd Gear. It has a granny low and so then just 3 normally usable ratios. Muncie Transmission Information . The later-model 1971-74 units are more popular with drag . These M22 units are . engine 'Muncie' 4-speed Manual transMission asseMBlies, Gears & parts HiGH perForMance 1963-1974 AUTO GEAR EQUIPMENT AUTO GEAR EQUIPMENT . The Muncie 3 speed manual transmission was use by General Motors in Chevrolet Bel Air, Biscayne & Impala, Blazer, Jimmy & Suburban (C & K Series), Camaro, Chevelle, El Camino & Malibu, Pickup & Van, Stepvan. M23/N24 Ratios. Pontiac installed the Buick heavy duty 3-speed transmission in 1956-57. The SM465 was made by General Motors from 1968 to 1991. Gear Count: 4. The gears load from the side just like any other Muncie or Saginaw. The transmission I have is confirmed via casting numbers as Muncie 3-speed used in a 71 Chevelle with big block, and it is in no way shape or form a toploader or a Ford. Newest [ April 24, 2022 ] 2022 AHRA No Name Nationals at Jeffers Motorsports Park, Sikeston, MO Car Shows & Events Muncie 3rd Gear 27 Tooth Auto Gear Italian or South Korean Made. All of these gears have the same number of clutch teeth: 36. 3rd gear with 27 teeth for all Muncie M22 close ratio transmissions. The new Muncies being built today have some better ratios.Today's examples of the new car gear set ups are Mustang GT's with a 3.35 1st gear and 3.08 rear. Jody Haag 610-413-8015. M20 B-W Early T10 L-D Wide Ratio 4-speed (Chevyshort tail) - Released Jan 1960 1961 M11 Early Muncie L-D three-speed M13 B-W T85 H-D 3-speed Transmission Gear Ratio Chart ~ Gear Ratios are listed for many popular transmissions. $12.77 $16.99. It takes 10 seconds. The PTO air supply for the shifting of the PTO must be supplied through a pressure protection valve supplied by the vehicle manufacturer otherwise their system cannot be used for the Muncie Power PTO. Muncie also had a second close-ratio transmission called an M22, which enthusiasts christened Rockcrusher; this was used in performance big-block engines and Corvettes and is a highly sought-after performance transmission today, and is the heavy-duty version of the 2.20 ratio M21 4-speed. Plug the tooth counts into the above formula and you get a first-gear ratio of 2.52:1. 3rd Gear. A M22 works well with any ratio from around 3.73-4.xx Oct 18, 2011 #3 F flowjoe Moderator Staff member Lifetime Gold Member Feb 7, 2006 8,146 SoCal Gary S said: A M20 or M21 will work well with any ratio from around 3.23 to 4.xx A M22 works well with any ratio from around 3.73-4.xx M21 and M22 have same ratios 2.20/1.64/1.28/1 The SM465 can be found in Chevrolet and GMC full-size trucks . It is driven by the input shaft with 21 teeth. Any info would be appreciated. The letter O would add confusion since it resembles zero. It will feel like you have a 4.10:1 differential on your 1st gear takeoff feel with the final drive of the 3.08:1. A Muncie 4 speed can be configured for a perfect replacement of a Saginaw transmission and no tunnel mods needed. Muncie 3rd gear with 27 teeth fits all M20 & M21 muncie transmissions. New Camaros with a 2.68 1st gear, 3.73 rear gear and .59 overdrive. Visual identification, model number and gear-tooth counting provides the surest identification First gear ratios include 2 TH400 (3 speed automatic transmission) The Turbo Hydromantic 400 is basically the same design as the TH350 but a stronger version Host File Edit Not Working 3 Speed Transmissions Model Years / Applications T-84 1940-1944 . (1) All M22 applications except 454 engine. They are compatible with a GM 3 Series differential. The Saginaw Michigan SM465 is a heavy-duty, four-speed manual transmission built by General Motors for use in light and medium duty trucks from 1968 to 1991 at the factory in Saginaw, Michigan.It was designed to replace the somewhat similar Muncie SM420 transmission, which had been in production since just after World War II.. Back in the day, millions of cars were made with 4-speeds (usually Saginaws) and 3.08~ gears so don't worry about wasting clutches. The M22 was produced in 1973 and 1974 for other GM divisions. The 1971 transmissions were the same as from previous year, except that the M-21 close-ratio 4-speed transmission was replaced with a stronger version of the Muncie close-ratio gearbox the famous M-22 "Rock Crusher" 4-speed. Popular Transmission Ratios - use for input below TRANSMISSION: 1ST: 2ND: 3RD: 4TH: 5TH: GM Muncie (M20) 66-74: 2.52: 1.88: 1.46: 1.00: n/a: GM Muncie (M20) 63-65 So, if you have an eight-tooth drive gear and use the above equation with an axle ratio of 3.73:1 you get 22: If you use a large-diameter eight-tooth gear, you may want to switch to a seven-tooth gear. Muncie M20 4 Speed Gear Set Wide Ratio 26 Spline Input 1 Cluster Pin Chevy Gm $479.00 The close-ratio version of the Muncie 4-speed was RPO M21 and the heavy-duty close-ratio 4-speed was RPO M22. Seller assumes all responsibility for this listing. UPC: Does not apply. New Camaros with a 2.68 1st gear, 3.73 rear gear and .59 overdrive. The Muncie M20 is basically a wide-ratio transmission and was intended for normal street driving use. Mike 69 Chevelle 496/TH400 Muncie Transmission ID and Ratio Guide. Furthermore, the Chevrolet 3-speed manual didn't have ideal ratios for a sports car, with a 2.94:1 first and a 1.68:1 second gear ratios. So, if you have an eight-tooth drive gear and use the above equation with an axle ratio of 3.73:1 you get 22: If you use a large-diameter eight-tooth gear, you may want to switch to a seven-tooth gear. All wide ratio transmissions are designated M20 and close ratio transmissions are designated M21 or M22 depending on the gear set. Ratios of the M20, M21, M22. 1st Gear (1) 311. These light duty Muncie model Model 318 and 319 transmission were used in early Chevrolet Bel Air, Biscayne, Impala, Chevelle, El Camino, Malibu, Corvette, Nova, Chevy II and Pickup Trucks and Van's. GMC Pickup Trucks and Van's . 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. muncie 3 speed transmission gear ratios. RICHMOND GEAR DOUG NASH/ G-FORCE 5-SPEED (467) BORG-WARNER T-5, FORD (465) Internal Rail BORG-WARNER T-56, G.M. P stands for Muncie Plant. Nos 1948 1961 Chevy Muncie 3rd Speed Gear For 4 Speed Transmission Gm 3840045 Fits Gmc Chevy - 92.00 Fits Gmc Chevy Muncie 319 Transmission Rebuild Kit 1954 1969 3 Speed W Overdrive In this case you get 19 or 20 (depending on how you "round" the answer): (7 x 3.73 x 747) ÷ 1001 = 19.48 They should be like 4.11 or a little under [3.73] which would give you overall ratio 12.08 in 1st gear and 2.87 in 3rd OD..Lets say your rear tires are 27" diameter, that would give you 2507 rpm @ 70 mph with 4.11 gears..2256 rpm with 3.73 gears giving 2.61 overall in 3rd OD.. Shipping and handling. That means you've either got the M20 Wide-Ratio, M21 Close-Ratio, or the M22 Close-Ratio heavy-duty four-speed Muncie. Fodrea's legacy is far-reaching, extending into popular transmissions around to this day, yet. He tells us both the M20 wide-ratio and M21 close-ratio transmissions were first offered in 1963 . If a car came with an axle ratio of 3.73 (or numerically higher), it usually came with a close-ratio transmission. The new base transmission was a Muncie heavy-duty 3-speed manual transmission that was related to the Muncie 4speeds. Muncie 4-speeds were produced in two different ratios wide-ratio (M-20) and close-ratio (M-21). Military specification versions were made through the early 1980s. 1968 M20 Wide Ratio Muncie 4 Speed Transmission 2.52 1st Restored. 3rd gear with 27 teeth for all Muncie M22 close ratio transmissions. . The countergear has 17 teeth on its first-gear section driving the actual first-speed gear with 36 teeth. 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.. The SM420 is an impressive, heavy-duty truck transmission designed for and used in ½, 3/4, 1 and 2 ton trucks. They are found primarily in GM and Chevrolet trucks, Blazers, Suburbans and many other models falling under the 1/4-ton to 1-1/2-ton platforms. C355 Forged Aluminum Mid-Plate. The standard rear gear with an OD equipped car/truck was 4.11 which gives a 2.88 final which is a great road gear. From $56.00 . With a 3.08:1 rear gear, the effective First gear ratio is equal to a 2.20:1 First gear Muncie four-speed with 4.56:1 rear gear. The Muncie 4-speed transmission was used with many different GM models and engine combinations from 1963-1974. From $93.70 . Muncie transmission are covered in this section light duty, rear wheel drive (RWD), 3 speed applications. The wide-ratio Muncie M20 was available with any of the high-performance engines, except . From $56.00 . P7C09 (March 9) date stamping on a 1967 Muncie 4-speed transmission; (1967 was the first year to have the year stamped in the date code and the month represented by a letter code). CHART 5-SPEED TRANSMISSION I.D. Muncies assembly codes are model year. But, the 3.08's will really neutralize the getty-up, especially if you're running a close ratio M-21. For more information or any help putting a Muncie in your classic car, give our friendly techs a call at (203) 235-1200! GM 4-Speed Manual Transmission Trucks. transmissions, Muncie, gears, kits, M22WGS (Autogear Italy) Complete M-22 gear set wide ratio 2.56 1st, 1.75 2nd, 1.36 3rd The gearset is very reliable and will survive behind a 300hp 327. 1964 to 1968 Muncie 4-speed transmissions can be identified from later models by the way the transmission arms attach. Some Muncies also carry ratio I.D. 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Close-Ratio, or the M22 close-ratio heavy-duty four-speed Muncie > 2nd gear with 36 teeth ( 466 ) G.M offered... With many different GM models and engine combinations from 1963-1974 the transmission attach... Takeoff feel with the final drive of the 2nd gear with 27 for! & amp ; Van or numerically higher ), it usually came with an axle ratio of (... In 1973 and 1974 for other GM divisions 2nd gear with muncie 3 speed transmission gear ratios teeth for all Muncie M22 close ratio..
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