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The Muncie four-speed was produced in two ratios: the wide ratio (M20) and the close-ratio (M21). That being said, there was a second, close-ratio version (M22) …
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Across the top of the page are the words "First Build 4/15/65 – 1st Shipment 4/19/65, recap of M22 (Rock Crusher) Trans." ... All 1963-65 M20 and M21 transmission used a 7/8″ countergear pin in all assemblies. ... On this document the 4 speed transmission option code listed the transmission as an M20.
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This a BRAND NEW SUPERCASE M22 4-Speed Muncie Rockcrusher Style Transmission. Each new Auto Gear transmission is built from genuine Auto Gear parts, the highest quality available. This is a BEEFY version …
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I think you at least need to step up to a Richmond 4 speed (iron case) or a Richmond 5 speed, if you want a manual transmission. A friend has a solid roller 468 that makes about 525-550 rwhp. He has a Jerico 4 speed with a Gear Vendors o/d unit. His Jerico has the same package for synchros, etc. that the Nascar Cup cars use on road …
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However, the Rock Crusher was only equipped in cars that had high-performance big blocks, including the Corvette, Camaro, Firebird and Chevelle. Thanks to the similarities between the M20, M21 and M22 transmissions, you can use a combination of Muncie 4-speed transmission parts to build the transmission you want for your project car.
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""You can outfit an M20 or M21 with Rock Crusher type gears, OR actually make a 3 speed O/D out of a 4 speed case. Forth being the overdrive obviously.. Kinda nice if you want the Muncie look and an overdrive"" Actually the 3rd gear station becomes the OD and the 4th gear station becomes 3rd,so the shift pattern is a little d,1-2-4-3.
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Learn how to identify Muncie 4-speed transmissions based on RPO codes, casting numbers, and serial numbers. Find out the differences between M20, M21, and M22 …
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Shop Muncie 4-Speed Speedway Driveshaft Slip Yokes Parts and get Free Shipping on orders over $149 at Speedway Motors. Talk to the experts. Call 800.979.0122, 7am-10pm CST, everyday.
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You can outfit an M20 or M21 with Rock Crusher type gears, OR actually make a 3 speed O/D out of a 4 speed case. Forth being the overdrive obviously.. Kinda …
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The M20 and M21 used a gearset with a more angled tooth design on each gear (left). The M22 Rock Crusher used a gearset that features less of an angled-tooth gearing (right). Images courtesy …
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All Muncie 4-speed transmissions were stamped at the Muncie assembly with a code number, consisting of a letter, date, and shift suffix letter where day and night shifts were in operation. Example: P701NP Muncie Assembly Plant. 7 Month of July. 01 Day of Month, 1st day. N Night shift. The year of was not coded on these transmissions.
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Ratios of the M20, M21, M22. Muncie 4-speeds were produced in two different ratios wide-ratio (M-20) and close-ratio (M-21). 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.
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Recent Comments. Randall D Resler II on Auto Gear Upgraded Ultra Case M22Z Rock Crusher 4-speed. Perfect Performance with 2.73 to 3.42 Rear End Gears. SALE EXTENDED!!! Jeff Collins on Muncie Super Duty M23 Upgraded Ultra Case 4-speed Road or Drag Racing Rock-Crusher. SALE EXTENDED!!! Thomas N. on Muncie Super Duty …
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Muncie M21 Transmission. Jump to Latest. 4K views 11 replies 8 participants last post by Muncieman Aug 6, 2014. F. fenork Discussion starter. 140 posts · Joined …
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We are restoring a 72 Chevelle SS and would like to use a Muncie "Rock Crusher". Is there anyone out there that and tell me the difference between a Muncie M22W and a M22 Rock Crusher. ... this is a great addition for the Muncie 4 speed AND my personal favorite gearset. ... and 4.10 gears. While having the M21 rebuilt, I installed my …
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NEW Muncie M22 SUPER ROCK CRUSHER 4 speed $2899.00. No Price Muncie Overhaul Kit. Complete overhaul kit for Muncie 4 speed transmissions. ... M21 & M22 transmissions, 1963-1974. $65.00 . Muncie Torque Lock Slider 1963-1974 Italian. Muncie torque loc sliders, Italian made. Made off OE blueprints.
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The M21 & M22 is a four speed, RWD or 4WD transmission. The M21 & M22 is a Muncie engineering design, this transmission is aluminum case, extension …
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Muncie 4 Spd Car M22 "Close Ratio" Gear Kit This M22 Gear kit will have a 1" Countershaft pin, 16 Spline input, Close Ratio 2.20 1st gear. The kit will include the Input shaft (4th gear), Countershaft, 1st gear, 2nd gear, 3rd gear, and Reverse Idler. Input- 26 Tooth 26 Spline Close Ratio Counter Shaft- R27-22-19-17 Big 1" Pin Close Ratio 1st Gear- 36 Tooth 2nd …
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Initially there were two specific Muncie transmissions available: the M20 wide-ratio (2.56:1 first gear) and the M21 close-ratio (2.20:1 first gear). The latter also offered a 1.64 second, 1.28 third, and direct-drive 1.00 …
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Identifying The Muncie. Muncie four-speeds were produced in two different ratios: the wide ratio (M20) and the close-ratio (M21). There also was a second, heavy-duty close-ratio version: the "Rock ...
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Borg Warner First Design T-10 4-Speed The Borg-Warner T-10 debuted in 1957 in the Chevrolet Corvette and eventually saw use in full size Chevrolets, Buicks, Oldsmobiles, Pontiacs, early Fairlanes and Mustangs. The T-10 is based on the earlier three-speed transmission called the T-85.
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When I was 17 and clueless I had a '65 Tempest with a 455 with a few light modifications. It had a Muncie with a compitition plus 4 speed and a Zoom clutch. It was a brutal torque monster and I drove it hard,racing it a lot with full throttle bang shifts. Broke a pressure plate,popped the gears on the rear end once and finally grenaded the motor.
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NEW, Complete 67 - 68 Camaro Muncie 4 Speed Conversion Kit now available! This kit will get you everything needed to convert a automatic 1969 Camaro into a four speed machine! ... M21 or M22 Rock Crusher transmission. With this new kit you also get all the hardware needed to get the job done right the first time. Correct bolts will include head ...
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Muncie also had a second close-ratio transmission designated M22 and often referred to as the "rock-crusher," which was used behind the highest-performance engines and in Corvettes, the M22 is a highly sought-after performance transmission. It is the heavy-duty version of the 2.20:1 ratio M21 four-speed.
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1967 - 1968 Muncie 4 Speed Transmission, M-22 Rockcrusher Complete original GM Muncie transmission rebuilt and guaranteed for 1 year. Correct fit for all 1967 - 1968 model Camaros. This one will have the studs coming out from the side where your shifter linkage mounts, like pictured. This is the Muncie M-22 Rockcrusher four speed.
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The most popular question has to be that everyone thinks they have the famous "rockcrusher" M22 4 speed. This had the same gear ratios as the M21 but with a heavy duty gearset. ... Times and requirements have changed making both the M21 and M22 the closest ratio production 4 speeds ever produced but also not practical for today's driving …
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M21 Muncie 4 speed. For Sale. Leave A Review Message Seller ... Nope, Rock Crusher is the M22. The M21 was put behind early big blocks as first gear is 2:20 to 1. Nothing is foolproof for a sufficiently talented fool. Save Share Like. DZAUTO · Registered. 1956 Corvette upgraded to 57 RPO 579D, including SB400, Rochester FI, …
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Learn how to identify and differentiate the legendary Muncie four-speed transmissions for Chevrolet muscle cars. Find out the history, features, and variations of …
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4. 09 represents the day of the month the unit was assembled, the 9th day of April. 1969-1974 production codes may contain an additional letter, for example: P9D09A.
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Look in the post at the top on the trans fourm. It tells how to pick out what is what but the main thing to look for in a M-22 is the gear angle. Take off the side cover …
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