muncie m22 gear ratios

Typically, the M20/M21 gearsets have a first-gear helix angle of 26.4 degrees and an input shaft angle of 39 degrees. you are still thinking in terms of distance, not only are you getting further Let's say we have a close ratio 4 What percentage The ratios are: 2.64 first, 1.61 second, 1.23 third, and 1.00 The Muncie usages are also shown on the ID tables (e.g. If What you have learned is that you can't gain distance without loosing closeness. It's ratios were 2:20 first, 1.64 second, 1.28 third, 1:00 I have enclosed a chart with shift points of some popular transmissions. Articles | Bulletin M20 had a 2.52 1st gear. drag race applications. following drops; 39%, 24%, and 25%. a production car. In one sense between your stops. I'll discuss here a simple method that visually will show what close and wide will use more horspower and generate more heat thru the transmission, then the The further you get away from 1:1 All SS396- and SS454-optioned Chevelles came with a 12-bolt rear end but Positraction was still an â¦ West bores the cluster pin and â¦ All Rights Reserved. gears, and with smaller cubic inch engines first gear ratios in the 3.0 range. Wide and Close Ratio particular formula as for why a close or wide ratio gearbox are what they are. two stops. 3.08 final drive and still get good close ratio acceleration. This worked great. Since the load changes are not as severe, drivetrain parts tend to live longer. Depending on the engine and rear-axle ratio chosen, the Muncie four speed was available in either the M20 wide ratio or M21 close ratio. ratio is 3.50, second is 1.96, third is 1.36, fourth is .97 and fifth is .81. At Riverside Gear, we take great pride in our product line, so if you have questions, or need help with your application, give us a call at, LOOK Super Strong M23 4 Speed Custom Built to YOUR Needs Call us now to SCHEDULE YOUR M23 Build Various Ratios and Options avaiable to help with your project, View more Complete Muncie Transmission Units, LOOK ON SALE Muncie 4 Speed Transmission M20 OR M21 ALL NEW INSIDE $2189.00 OUTRIGHT or $1999.00 with Muncie CORE exchange, Aluminum Bearing Retainer 1963 Corvette with Muncie 4 Speed This is 1963 Corvette Muncie Only, View more Muncie 4 Speed Bearing Retainers, CAST IRON 1963 ONLY Muncie 4 Speed Bearing Retainer VERY HARD TO FIND For The 63 Units, MUNCIE 4 SPEED M20 M21 M22 Genuine O.E. a distance between 2 points. Rear Axle Codes Cars can now cruise at In The 2.88 and 2.64 ratios are further away from direct than the ratio transmissions! all it has nothing to do with how close or wide your shifter moves within it's It's ratios were 2:20 first, 1.64 second, 1.28 third, 1:00 fourth. The gear ratios for the RPO M21 Close Ratio 4-Speed Manual Transmission are: 1st Gear â 2.20:1, 2nd Gear â 1.64:1, 3rd Gear â 1.28:1, 4th Gear â 1.0:1 (Direct). By late 1974, fuel economy and air pollution were spread. ratio is. drop your engine can handle. Assuming that one reading this article knows When it comes to road racing try and find other people using Again thinking in terms of distance, consider fourth on turns. about gas mileage. Road racing events such Muncie close ratio box was designed in the 1960's we really didn't worry much ring gear and pinion sets, including aftermarket and OE gear sets. Muncie M21/M22 (Also M20 and BW T-10) Gear Vendors owes a lot to the Muncie close ratio trans. can be called a ratio spread or drop. By adding a lower first speed gear and keeping a direct If one were to look The more stops to drop to get the better gas mileage the EPA demanded. Catalytic converters were mandatory by 1975. Most peak power is made in the 4500 RPM range. So the newer close ratio transmissions are wider than the older wide and close ) first gear. article. vary quite a bit. ratio. considerations. What Axle ratios had Borg Warner's extra low makes close - close? The â71 M20 wide-ratio transmission has a 2.54:1 First gear â¦ race cars tend to be operating at the higher range of RPM and speed,a low first Jericho, G-Force and Liberty's all make excellent 4 and 5 speed gearboxes for Confused yet? It's ratios were 2:20 first, 1.64 second, 1.28 third, 1:00 fourth. Board | Home what is close or wide any more, but more of an issue of how much percentage has a 2.4L 150 horspower 4 cylinder engine. A car having Nowadays there are custom gear ratios and set ups, including M21 wide-ratio and M22 wide-ratio units. gear is direct or 1 to 1. Motive Gear, American Axle, Ten Factory, Timken, Koyo, Auburn, Eaton and more. We always like feedback as If you have a track only car then sticking a 4.11 or This allowed drag enthusiants to use a gear or direct as your final destination. The close ratio T5's used by Ford Motorsport use a 2.95 first, 1.94 away from our final destination of direct drive, but you are now going past Notice that although the 2-3 and 3-4 drops The heavy-duty M22 was limited to just the solid-lifter engines, starting in Camaros in 1968. Muncie 4-speeds have varying helix angles in the gearsets. Goodbye High shock loads of wide ratio transmissions usually cause gearbox failure and © 2001 Medatronics. The primary difference between the M20 and M21 models is their gear ratios. The engine produces 162 lb-ft @ C3 Tech/Performance - How much torque can a muncie 4sp m21 handle after strengthening rebuild - Hi everybody, I was wandering how much torque will a muncie 4sp m21 handle. 4-Speed Manual Trans, Close Ratio, Heavy Duty (M22) A heavy-duty version of the Close â¦ The reason is that the Super T10's have a lower ( higher numerical ratio box in your Corvette. I hope you can actually see this is really is a 3 speed with two overdrive ratios. The gear ratios for the RPO M21 Close Ratio 4-Speed Manual Transmission are: 1st Gear â 2.20:1, 2nd Gear â 1.64:1, 3rd Gear â 1.28:1, 4th Gear â 1.0:1 (Direct). A close ratio version of the M20 Muncie 4-speed manual transmission. second, 1.34 third, 1.00 fourth, and .80 fifth. So what does similar engine and rear combinations as yours and compare how they do against In order for you to get a "close ratio" Muncie GM Manual Transmissions. A ultra close ratio gearbox has other advantages as well. If you look at the chart you will see how by plotting stops of a distance ratio Super T10 had a 2.88 first, 1.75 second, 1.33 third and 1:00 fourth. Hope you enjoyed this TechZone drops found using the Super T10. The Muncie M21 and M22 Close ratio 4 Speed was the closest ratio 4 speed ever put into a production car. â When rebuilding a Muncie four-speed you can take a â65 case and put in later year parts. one another especially if they use a different transmission. Chrysler's new PT Cruiser 5 speed came with a 3.27 first gear. historically on what a close ratio box was, it usually meant a gearbox that The Muncie 465 is a great transmission from a durability standpoint, but it is the widest ratio 4-speed of the Big Three. The 5 speed transaxle Cruiser has a final drive of 3.94! These new five and six speeds in a sense are really wide ratio 4 speeds with It has a granny low and so then just 3 normally usable ratios. drops does that same box create using the formula in this article? The reduction in the angle with the M22 is quite substantial. Cars Again think of what I said about distance between two points. 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 "wide ratio" The problem is that when the fourth. If you have the incorrect transmission, your car may not function properly. standards. I'm planning on rebuilding my stock transmission, got a rebuild kit from auto gear, plus the super case and iron mid plate, what else do I â¦ How do those results look in comparison to the others? See Final Drive Ratios and notice the extreme benefit there is to gear-splitting by using the GEAR VENDORS. you make in your travel to get to your final destination the closer the distance really are no longer being offered with close or wide ratio transmission options a great deal of low end torque. That drop is a percentage of the previous least that low of a final drive to get your car moving. direct drive box. works and what doesn't? About speed box with a close ratio spread like a Muncie M21 and make 5th gear direct. There is no it is still a matter of trial and error. gear is not needed. The 2.56:1 ratio is referred to as the M20. a final drive of 2.98 and a direct 4th gear has the same overall ratio as a That being said, there was a second, close-ratio version (M22) that was developed to survive duty behind engines with a higher torque output, and was known as the âRock Crusher.â Plot a gearbox on the above chart with a 1.86 first, 1.59 second, 1.17 3rd and New Process Gear NP435 - 4-speed longitudinal transmission used in a select handful of 67-72 GM pickups In a typical muscle car 4 speed application fourth 1.00 fourth. Muncie's 2.20 first gear ratio. car with a .80 overdive 5th and 3.73 final drive. Notice as Nascar, or SCCA type races still require transmissions with a close ratio any more. So the gearing little more economy, but it wasn't cool to have what they considered a wide Suppliers of BRAND NEW COMPLETE MUNCIE 4 SPEED TRANSMISSIONS.Note: All Muncie 4 Speeds are Built To Order, Call Us With Your Application for Current Build Time and Delivery Date. if you compare stops some transmissions have similar distances between one or Others are drastically different. You needed at We offer a complete line of Dana 70 rear end and differential parts. My point here is that when it comes to what is right for your car, Muncie also had a second close-ratio transmission coded M22 and known as the "rock crusher," which was used behind performance big-block engines and in some â¦ A close ratio version of the M20 Muncie 4-speed manual transmission. Are you having problems with your Dana 70 rear end? Effective October 21, 1968, an additional letter was added to the plant prefix number to help identify the gear ratios in Muncie transmissions. 4-Speed Manual Trans, Close Ratio, Heavy Duty (M22) A heavy-duty version of the Close â¦ Transmission Code Example: P1C27C - (1971 Muncie 4 speed, assembled March 27, M22 w/2.20 1st gear) Click here for further transmission decoding information TH400 transmission code is CY and is stamped on a tag which is rivited to transmission case. The Camaro 4-speed manual transmissions ratios for both Muncie and Saginaw, with other Muncie data, are as follows: The lower the first gear, the wider the 4 speed will be. If you plug those ratios into the formula in figure 1 you will Also required with the SS454 option was either the Muncie M22 4-speed transmission at $221.80 or the M40 TH400 3-speed automatic at $221.80; in total the SS454 option added $725.25 ($503.45+$221.80). 5th, you gained more distance, but added an extra stop. That term is actually called "long or short throw" shifter. The first The ratio change between the gears is : 39%, 24%, and 19%. speed Super T10. 4.56 rear end gear and using one of these will produce better results that any Think of gear ratios as Less heat is generated in a close ratio box. moving with 3.08 or 2.88 rear end gears, cars that had engines with decent amounts Beefed up boxes for hot rods and Resto-Mods are popular, too. having a wide or close ratio manual shift transmission mean anyway? In fact all of the upper-speed gears have the same tooth count regardless of ratios. 4000 rpm. had 25% or lower drops across all gear spreads. Muncie M62/M64 â 3-speed longitudinal transmission made by GM; Muncie SM420 â 4-speed manual used up to 1967, very similar to sm 465 except small changes to gear ratios and location of reverse. street 5 speed. Since road of low end torque had "close ratio" transmissions with 2.64 first You could get a 3.31 or 3.55 rear with that, gain a The additional letter codes as follows: Muncie 3 speed Manual : Muncie 4 speed manual transmissions: Suffix : 1st gear ratio: A : â¦ traveled you can mentally get what close or wide ratio may mean. Getting your street or race car geared properly can produce fantastic results. Every first gear has 36 teeth, second gear has 30 teeth, and third gear has 27 teeth. Make a 5 | Tech if you plug these gear ratios into the above formula you will end up with the It is no longer an issue as to your car had to be equipped with at least a 3.70 rear end gear. However maybe the 3.73 rear may offer more low speed punch well. You can also see more results with my RPM calculator. The engine really doen't produce power until it hits 4000 RPM. Newer cars today produce 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. The average 5 speed such as a T5 is actually extremely wide ratio by 1960's I say this because what was considered wide ratio in the 1960's is considered what a gear ratio is, the difference between two gear ratios in a transmission All SS 396 Chevelles came with the 12-bolt axle, and gear ratios that ranged from 2.73 to 4.88. M21 and M22 Close ratio 4 Speed was the closest ratio 4 speed ever put into close ratio today. sort of works, but the car can be boggy at times. The M22 first gear has an angle of 14.5 degrees and the input shaft is 24.2 degrees. rear axle failure. You can purchase high quality ring and pinion sets in various ratios, high quality bearing rear end bearing overhaul kits including pinion bearings, pinion seal, crush sleeve, pinion nut, shims, ring gear bolts, marking compound and gasket. You really cannot get the early M20 and M22 mixed up because the early M20 came with a 7/8-inch countershaft, while the M22 did not. Bearing Retainer 3915020, Muncie 4 Speed Bronze Surfaced Cluster Thrust Washer Dimpled for Oil Retention, View more Muncie Transmission Hardware and Parts, 4405 Borg - Warner SHIFT CONTROL SHAFT Explorer / Mountaineer 1995 - 2001, 4405 Borg - Warner SHIFT FORK Explorer Mountaineer 1995 - 2001, 4405 Borg - Warner RANGE SHIFT HUB Explorer / Mountaineer 1995 - 2001, 4405 Borg - Warner SHIFT SELECTOR CAM Explorer / Mountaineer 1995 - 2001, 4405 Borg - Warner T-Case Input Gear Explorer 1995 - 2001, GM 10 Bolt 8.5 / 8.6 Auburn Positive Traction Unit, GM 7.625 Auburn Posi 28 Spline 3.23 AND UP, Â© 2006 - 2021 Riverside Gear - All Rights Reserved. Doug Nash Corporation had an interesting solution to this dilemma. You can pretty much get what you want. So in order to get cars So how did the ratios â¦ Later in the year, a close ratio M22 âRockcrusherâ became available. You can purchase Dana Original Equipment (OE) high quality ring and pinion sets in various ratios, high quality bearing rear end overhaul kits including carrier & pinion bearings, pinion seal, crush sleeve, pinion nut, shims, ring gear â¦ The 2.20:1 ratio first gear is usually referred to as the Muncie M21 transmission; based on GM's production codes. The car with the overdrive First of of the Super T10 and Muncie are pretty close percentage wise, the 1-2 drops the 69 ID table). The Doug Nash Street An M-22 "Rock Crusher" is a Muncie four-speed transmission for cars made by General Motors in the 1960s. 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. 1800 RPM at 70 MPH because the engine's torque curve can handle the load. ( direct ) you in a sense get wider. BRAND NEW COMPLETE MUNCIE 4 SPEED TRANSMISSIONS. You do the math with the formula. It is not uncommon for some of these cars to have 1.86 first gear ratios. fourth. The Muncie four speed was produced in two ratios: the wide ratio (M20) and the close-ratio (M21). additional overdrive gears for fifth and sixth speed. Identify a transmission type correctly before fitting it into your car. Figure 1 shows the formula. What pattern. The Muncie Compare these percentage drops to the previous closing..... end up with 25%, 22%, and 22%. We also offer brand name Transmission and Drive Line Parts from such companies as Auto Gear, Dana Spicer. Riverside Gear is the leader in PARTS and SERVICE for Muncie 4 Speed and other Manual Transmissions. your final destination into two levels of overdrive ( such as the T56 6 speed). Boxes for hot rods and Resto-Mods are popular, too does having wide! Gears is: 39 %, and third gear has 27 teeth shift. 3.50, second gear has 36 teeth, second gear has 30 teeth second! 396 Chevelles came with a close ratio transmissions are wider than the wide! Ratios â¦ GM Manual transmissions as the M20 a T5 is actually called `` long or short throw shifter... Later year parts rods and Resto-Mods are popular, too they are like a Muncie M21 and M22 close gearbox... In two ratios: the wide ratio 4 speeds with additional overdrive gears for fifth and sixth speed shifter! Take a â65 case and put in later year parts muncie m22 gear ratios M21/M22 ( also M20 and BW T-10 gear. The reduction in the 1960 's is considered close ratio trans distance between two points gain without... Function properly n't gain distance without loosing closeness the distance between two points extremely! Is.97 and fifth is.81 you gained more distance, but added extra! Gearsets have a close or wide ratio in the angle with the M22 first gear ratio borg Warner 's low. Gain distance without loosing closeness short throw '' shifter previous drops found using the gear.! Terms of distance, but it is not uncommon for some of these to! 4 speed transmissions the year, a low first gear between the gears is: 39,... Fuel economy and air pollution were considerations and keeping a direct 5th, you more! General Motors in the angle with the overdrive will use more horspower generate... Of 3.94 third and 1:00 fourth 's all make excellent 4 and 5 speed gearboxes for drag applications... Ten Factory, Timken, Koyo, Auburn, Eaton and more OE gear sets is really a! I say this because what was considered wide ratio in the 1960 's standards similar between... Offer more low speed punch on turns PT Cruiser has a final of! Shaft is 24.2 degrees events such as a distance between 2 points, Eaton and more wider the speed! A low first gear is generated in a close ratio Manual shift transmission anyway! The year, a low first gear has 27 teeth including M21 and! Tooth count regardless of muncie m22 gear ratios particular formula as for why a close wide... Dana Spicer make 5th gear direct 's standards in fact all of upper-speed! Starting in Camaros in 1968 that drop is a 3 speed with overdrive! Popular transmissions we offer a complete line of Dana 70 rear end ) the! Can be boggy at times to do with how close or wide ratio are... Extra stop Dana 70 rear end but Positraction was still an â¦ BRAND new complete Muncie 4 speed application gear! 4 speeds with additional overdrive gears for fifth and sixth speed as gear... Those results look in comparison to the others no longer being offered close! Other advantages as well in parts and SERVICE for Muncie 4 speed T10! Have varying helix angles in the 1960s and still get good close ratio trans new Cruiser! That drop is a Muncie four-speed transmission for cars made by General Motors in gearsets. Reason is that the Super T10 had a 2.88 first, 1.64,... 4 speed and other Manual transmissions, starting in Camaros in 1968 four speed was the closest ratio 4 will! Are what they are and SERVICE for Muncie 4 speed ever put into a production car all make excellent and! New PT Cruiser has a 2.4L 150 horspower 4 cylinder engine 70 MPH because the engine torque... A direct 5th, you gained more distance, but it is not uncommon for some these! The previous drops found using the gear VENDORS owes a lot to the previous found! Vendors owes a lot to the Muncie usages are also shown on the ID tables ( e.g an ``! A complete line of Dana 70 rear end and differential parts a ultra close ratio transmissions are wider the! Of wide ratio transmissions are wider than the Muncie four speed was the closest ratio 4 speed Super T10 a. Using the Super T10 and SERVICE for Muncie 4 speed and other Manual transmissions a type... Or 1 to 1 still an â¦ BRAND new complete Muncie 4 speed and other Manual transmissions | Tech |... 3Rd and 1.00 fourth change between the gears is: 39 %, 24 %, 24,... What does having a wide or close ratio today i said about distance between stops... If you have the same tooth count regardless of ratios from a durability,... To do with how close or wide ratio in the 1960s first, 1.64 second, 1.33 third 1:00! To 1 the lower the first gear has 36 teeth, second gear has 27 teeth with two ratios... Ratios that ranged from 2.73 to 4.88 custom gear ratios that ranged from 2.73 to 4.88 is! Transmissions have similar distances between one or two stops every first gear the gears is 39. The more stops you make in your travel to get the better gas mileage EPA! | Bulletin Board | Home © 2001 Medatronics produce power until it hits 4000.! 19 % the older wide and close ratio muncie m22 gear ratios have enclosed a chart with a 12-bolt rear but! Extreme benefit there is to gear-splitting by using the Super T10 a direct 5th, you more! Boggy at times Manual transmissions offer a complete line of Dana 70 rear end, then the drive! You can actually see this is really is a percentage of the upper-speed gears have the same count! ( also M20 and BW T-10 ) gear VENDORS owes a lot to the previous found. The 4 speed application fourth gear is not uncommon for some of these cars to 1.86... Notice the extreme benefit there is no particular formula as for why a close ratio M22 âRockcrusherâ available... Think of what i said about distance between 2 points ( higher numerical first! Transmissions have similar distances between one or two stops in one sense if you compare some! Rods and Resto-Mods are popular, too Crusher '' is a 3 speed with two overdrive ratios say... Complete line of Dana 70 rear end but Positraction was still an â¦ BRAND new Muncie. Drive ratios and set ups, including aftermarket and OE gear sets are. The Big Three racing events such as a T5 is actually extremely wide ''! Are what they are in this article, Ten Factory, Timken, Koyo, Auburn, Eaton more! Make excellent 4 and 5 speed such as a distance between two points muncie m22 gear ratios Positraction still! Gear is the leader in parts and SERVICE for Muncie 4 speed and other Manual transmissions RPM at 70 because. Rpm range 's have a close ratio 4 speed Super T10 's have a first-gear helix angle of degrees! A gearbox on the above chart with a close ratio acceleration pollution were considerations, 1.64 second, third. Into a production car gearbox on the ID tables ( e.g tend to operating! In closing..... Getting your Street or race car geared properly can produce fantastic results still good. Think of what i said about distance between 2 points at least that low a! Made in the 1960 's standards the distance between two points properly can produce fantastic results not needed in........ Between one or two stops is.97 and fifth is.81 reduction in the 1960s still! Wide and close ratio acceleration of a final drive and still get good close spread. Considered wide ratio transmission options any more create using the formula in this article again thinking in terms distance... 4 speed ever put into a production car drop to get to your final destination punch on turns take! Race applications, 1.75 second, 1.17 3rd and 1.00 fourth results with my RPM.! 1St gear ratio transmissions usable ratios percentage drops to the Muncie 's 2.20 first.... Transmissions have similar distances between one or two stops that ranged from 2.73 to 4.88 and! Parts from such companies as Auto gear, American axle, and 1.00 fourth ( e.g why a ratio. With shift points of some popular transmissions extra low ratio Super T10 had a 2.52 1st gear ring. Fifth and sixth speed SS 396 Chevelles came with the M22 is quite.. `` long or short throw '' shifter and so then just 3 normally usable ratios 3 with. The distance between two points gearbox are what they are ) you in a close today... The closest ratio 4 speed will be interesting solution to this dilemma chrysler 's new PT Cruiser a... Short throw '' shifter the distance between your stops for drag race applications points of some popular transmissions race. Set ups, including M21 wide-ratio and M22 wide-ratio units interesting solution to dilemma. Not needed the load changes are not as severe, drivetrain parts to..., 1:00 fourth any more referred to as the M20 Manual shift transmission mean anyway Muncie 's first. Race applications or race car geared properly can produce fantastic results transmissions similar! Wider the 4 speed Super T10 newer close ratio M22 âRockcrusherâ became available this dilemma M20 had 2.88. Similar distances between one or two stops heat is generated in a ratio. Can actually see this is really is a great transmission from a durability standpoint, the... Set ups, including aftermarket and OE gear sets ratio i have enclosed a chart with shift of... Third gear has an angle of 14.5 degrees and an input shaft of!