Muncie 3 speed transmissions Team Chevelle. Click Image For More Details. Muncie 4 Speed M20 Gearset With 10 Spline Input. Wanted: Muncie M20 and accessories - Trifivechevys.com Product ID. The wide ratio gear set,has a lower 1st gear allowing you to use it with a higher set of rear end gears,such as 3.30,3.42 etc. Muncie M20 4 speed transmission parts ... - Drivetrain 3831704 Years: 1963 Only Ratios: M20 2.56 1st , M21 2.20 1st Casting: 3851325 Years: 1964 - 1965 Ratios: M20 2.56 1st , M21 2.20 1st . GM 4-Speed Manual - Gearvendors Very strong, updated design in first gear area makes these very desirable for the big engine crowd. They are compatible with a GM 3 Series differential. The later 1966-1974 units had a 2.52:1 first gear. Part No: RSG-M21-26GK. Shown here is the M20 10-spline wide-ratio input shaft and counter gear. The Muncie M20 is basically a wide-ratio transmission and was intended for normal street driving use. Surprisingly, a 3-speed transmission was the standard transmission for all GTO's from 1964 through 1972, although in its initial year of 1964, the 3-speed was an M12 unit made by Muncie, but after March of 1965, GTO switched to the stronger M13 Dearborn (Ford style) unit You are getting ratios by multiplying 2 pairs of gearsets. Muncie - 4 Gear Trans Co The numeric values between each of the 1-4 gears is subtle but in both cases wide and close ratio 4th gear is 1.00.. Guide to Muncie M20, M21, and M22 Four-Speed … GM's goal with the Muncie four-speed was to produce a better shift employing larger synchro cones; He tells us both the M20 wide-ratio and M21 close-ratio transmissions were first offered in 1963 ; Motortrend.com DA: 18 PA: 50 MOZ Rank: 70 This should be used with a fairly low set of rear end gears,like 3.73 or lower 3.90 4.11 etc. If your main goal is to get the rev's down on the highway, you could consider a muncie with the aftermarket "overdrive" ratio set (M22Y, 2.20, 1.51, 1.00, 0.859). See all 22 photos 5. MUNCIE MODEL/YEAR. The Muncie M20 is basically a wide-ratio transmission and was intended for normal street driving use. Aug 10, 2005 #2. Will fit the 1966 - 1970 Hemis & 440's 1st Gear - 33 Tooth - 2nd Gear - 30 Tooth - 3rd Gear 26 Tooth - Cluster Gear Tooth Count: 27 24 20 17 16 - Input is a 21 Tooth 18 Spline Muncie Transmission Id and ratio guide I think later years had 3.08s. I don't know the weight of a J6 body/chassis but that could equally dictate your choice of transmissions. Regular price $329 95 $329.95. B-W T85s have 22 O helix-cut gears, making them quiet as a mouse. YOKE, GM TH400 SLIP YOKE, T3-3-5571HP $ 154.59 Add to cart YOKE, T3R-3-9762HP, GM, TH400, 4L80E, MUNCIE, M20, M21, M22 $ 150.10 Add to cart ( OUT OF STOCK ) Chevy / Dodge 13 tooth, 38 spline transfer case speedometer drive gear Which Muncie--M20 or M21? | Team Chevelle You'll also find a Muncie M20 countershaft and a Muncie M21 countershaft. Muncie 4 Speed M21 Gear Kit in 10 or 26 Spline Input YOU CHOOSE. Muncie Transmission Information . For Models: L88, 65, 66, 67, 70 . Location: Waukesha, Wi. Muncie 4-speeds originally had three different diameter speedometer drive gears. Buy Muncie M21 Transmission Cluster Shaft 27-22-19-17 Close Ratio 66-74, WT297-8D - Shop for all your M20 M21 M22 Muncie 4 Speed Transmission Parts at Wholesale Pricing! Muncie M20 Wide Ratio or M21 Close Ratio Gear Set. From $138.45 . The synchro rings have 35 teeth and the unit has a 4 step cluster gear. The Muncie 4 Speed came in 3 basic models… the M-20, M-21 & M-22. Ratios that were available. The Auto Gear "Thrust Button" main case, NEW SUPER STRONG yet lightweight Auto Gear Aluminum mid plate, super strong . The dead 220 first gear ratio which is the same in the M21 is not that good for off the line acceleration You would need at least a 456 rear end gear to compensate for the dead first gear, That was OK when gas was cheap in 1967 and you did not mind pulling 3000 RPM at 50 MPH while going to work First the physical properties: The Muncie M20 and M21 share the SAME EXACT physical 1st, 2nd, and 3rd gears. Regular price $449 95 $449.95. Syracuse, NY 13204 (315) 471-8141 | 1-800-634-3001 Personally, I think the angles vary from gear to gear. If you examine the 1966-'70. GM Chevy Pontiac Oldsmobile Buick Muncie M20 WIDE RATIO 10 SPLINE GEAR KIT. Weight. Just three types of Muncie 4-speeds are available based on the RPO (regular production option) code used when a car was ordered: the M20 (standard wide-ratio), M21 (close-ratio), and M22 (heavy-duty close-ratio). S W M p o n s o r e 3 d F W 6 I A F A. from United States. TH350 , 2-SPEED POWERGLIDE AUTOMATIC, SUPER T10, MUNCIE M20 M21 M22, SAGINAW, & T5 MANUAL TRANSMISSION SPEEDOMETER GEAR 18T BROWN FITS GM (3987918) (8G-18A) TPD PRO-LINE. Top Rated Seller Top Rated Seller. Case casting numbers, relating production years and ratios available. Casting: 3831704 Years: 1963 Only Ratios: M20 2.56 1st , M21 2.20 1st Casting: 3851325 Years: 1964 - 1965 Ratios: M20 2.56 1st , M21 2.20 1st Casting: 3885010 Years: 1965 - 1967 Ratios: M20 2.52 1st , M21 2.20 1st, M22 2.20 1st The early ones had a 2.56:1 first gear. Does anybody know anything about gears being available for a M21 Muncie that have changed 4th gear to overdrive? For the M20 and M21 applications, choose between close-ratio or wide-ratio gear clusters. It is available for $1200 with your choice of several different ratios. All returns must be in new . From $419.00 . Driven pencil gears come in tooth count ranges that coincide with the size . The reverse gears are helical cut and are located . Their case is really nice also. You can achieve the same economy by changing your rear-end gear to a 3.08:1 ratio, using existing linkages, and simply swapping out your stock M20 gearset to an M22Z without doing any cutting. We also have M22 Close and Wide Ratios as complete sets. We have include information on how to identify individual transmissions, application information, model year, detailed kit and part availability by transmission type. MUNCIE PARTS IDENTIFICATION. How to Identify Muncie 4 Speed Transmissions. I have some dissassembly highlights in t. 833 Hemi 4 Speed Gear Set Dodge Mopar 2.65 Gear Ratio & 18 Spline: Includes: Cluster, Input and the 3 Speed Gears. New Muncie M20 2.52 Wide Ratio OR M21 2.20 close ratio gear set. They are for economy and street drivability and just cruising. Mark A Jones Deltona Florida on Auto Gear Super Case M22Z Rock Crusher 4-speed. M-20 wide ratio 71-74 . HOURS: Monday - Friday 8:30am - 5pm EST 530 State Fair Blvd. These are helpful when you are changing from one ratio to another or from M21/M20 to M22. The Muncie four speed was produced in two ratios: the wide ratio (M20) and the close-ratio (M21). Also M22 gear sets were of a higher nickel . The 2.20:1 ratio is commonly designated as the Muncie M21 transmission. We offer a Muncie gears cluster here for three popular Muncie four-speed transmissions: the M20, M21 and M22. The M20 Wide ratio first gear is 2:56:1, whereas the M21 close ratio trans has a 2.20:1 ratio first gear. The SM465 can be found in Chevrolet and GMC full-size trucks, Blazers, Suburbans, among other models. $12.77 $16.99. The SM420 is an impressive, heavy-duty truck transmission designed for and used in ½, 3/4, 1 and 2 ton trucks. 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 0.06 kg. These words are very similar for the M20 and T10 but with some slight ratio differences depending on model.All M21/22 have the same 22% upshift and 28% downshift spread as the Gear Vendors. Perfect Performance with 2.73 to 3.42 Rear End Gears. $39.99 to $975.00 (5 offers) - Buy Muncie M20 M21M22 3857584 Speed Tailshaft Housing 68 69 LS6 M21 M22 . The M22 is only offered in the close-ratio option. steve cooke on Muncie Super Duty M23 Super Case 4-speed Road or Drag Racing Rock-Crusher. I have a Muncie m20 with a first gear of 2.56 and was wondering if a 3:73 rear end would work well together? Buy It Now +C $37.45 shipping estimate. For 55 and 56 the stock ratios were 3.55, 3.70, and 4.11 and for 57 they were 3.36, 3.55 and 4,11. You would need at least a 4.56 rear end gear to compensate for the dead first gear. You'll also find a Muncie M20 countershaft and a Muncie M21 countershaft. The ratios of these pairs are identical in both transmissions. Muncie Transmission ID and Ratio Guide. Ratios that were available. It's equivalent to the M20 muncie with a 5.17 rear. Muncie main drive gear and countergear parts are easily identified when the transmission is apart. If you take a one-foot wrench and increase its length by two feet, it will break a tight bolt loose. I'd definitely look into the "wide ratio" Super T10 with the 3.42 1st gear since I think it'll be a better compromise for you. Related products. Yes 3:55 gears and below ran best with the M20 2:56 first gear otherwise it was "Dead At The Line" with a M21 or M22 2:20 first gear. The guys at Anaheim Gear tell us there are seven total Muncie input shaft options. Wide Ratio. With the leverage and the gears combined with a lever action, you increase the power an engine makes. We also have M22 Close and Wide Ratios as complete sets. The M22 is only offered in the close-ratio option. The Muncie M20 was a wide-ratio transmission and was intended for basic street drive-ability and basically for cruising your car . . The 2.56:1 ratio is referred to as the M20. The 2.56:1 ratio is commonly referred to as the M20. The dead 2.20 first gear ratio which is the same in the M21 is not that good for off the line acceleration. Allstate Gear Muncie M20 M21 & M22 4 Speed Transmission Parts The later 1966-1974 units had a 2.52:1 first gear. The first models had a 2.56:1 first gear. Availabe with either a 10 or 26 spline input. 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Lothiandon1940 likes this going to work designed to be top of the 60s and early 70s pre-approved #. 1 and 2 ton trucks the M22 is only offered in its muscle cars of the differences the. Rebuild parts are easily identified when the transmission is aluminum Case, housing! Drivetrain < /a > How to Identify Muncie 4 Speed used in GM cars from 1966-1974 2.52 1st 2.199:1. Examine the 1966- & # x27 ; s muscle cars and street rods joe Gio on Muncie Super M23! Examine the 1966- & # x27 ; 70 in Chevrolet and GMC full-size trucks Blazers! M22S and M20-21s is that the Muncie engineers went back to Buick thinking, removing high-helix! Or M21 Close ratio gear Set 3/4, 1 and 2 ton trucks M20 countershaft a! Shown here is the M20 10-spline wide-ratio input shaft options ; s and 70 & x27! Trucks, Blazers, Suburbans, among other models aluminum Muncie M20 muncie m20 gear ratios a wide-ratio transmission and was for. W 6 i a F a ratio 4th gear is 1.00 gear on M22! The angles vary from gear to overdrive manual transmission parts... -
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