The lever is engine power. It is the same diameter as a 1. An example would be P0C25B. The prOper clearance is from. Not a good match; even with the stock 3. The M22's are both close ratio and the M21 is a wide ratio.
Note that a Muncie dated with a September to December build date was actually built the prior calendar year. Check bushings for excessive wear by using a nar- gag: 73:5? The final number, 15, is the actual wheel diameter. It debuted in 1963 Chevrolet full-size cars and Corvettes, and was originally available with two first-gear ratios: 2. P0B02C ~ M22 dated February 2, 1970. Do you know the tooth count of the speedometer drive gear in the transmission? Muncie 4-speeds originally had three different diameter speedometer drive gears. An example would be the date code P8T13, meaning 1968 8 , December T , 13th. Gear Vendors 1st-over ratio is only 7 hundredths different than having shifted to 2nd not discernable and actually closer in ratio.
Muncie Speedo Gears If you're undertaking a Muncie transmission T10 speedometer gear replacement or need a T5 speedometer drive gear for a repair job, we've got a full line of quality pencil speedometer gears and speedo accessory parts here, custom manufactured by Transolutions and ready for immediate delivery usually shipped within 24 to 48 hours. I really do love this website, it has been nothing but help. Re the in-box overdrive: Yes, original forth becomes third, overdrive goes in the original third gear position in the box, you flip the 3-4 shift lever on the side of the trans so it points down instead of up and your shift pattern remains the same. Spread 3'- the snap ring in the plate to allow the snap ring to F5 drOp around the rear bearing and press on the end :3? Here is a quick spline-groove identification chart: 1963-'65 M20 2. Actually, they are not completely straight. Muncie 4-speed Transmission Group 4.
This is not a track car but I do like to drive agressive from time to time. Of course, rodders get a little creative. I like the fact they deal with 2nd gens and their videos speak for themselves. Install the main drive gear bearing retainer, gasket, transmission case. Hey mods, if this is a no-no, I truly apologize. Place gasket in position on front face of rear bearing 13.
General Motors discontinued the 1. All our kits also have our 2year unlimited mileage, horsepower, and abuse warranty — you can go to the dragstrip every weekend and still be covered — no other overdrive can handle that. A close-ratio gearbox keeps shift points closer together, which keeps rpms up. The six-tooth gear no longer available had no driven-gear options except for one steel 20T pencil gear. Really hard on the clutch. The 9 to 1 thing is a rule of thumb and a torquey motor can cover up some sins.
All 26 spline inputs came with 32 spline output shafts and all 10 spline inputs came with 27 spline output shafts. The bushings used in the idler gear are pressed into g}! Originally posted by Trainman: Try Tons of info on all manual transmissions. When I drive the car I drive it on the highway 20 miles one way to work. The M21 was for higher performance cars, which makes it a great box to use in a rod. Place detent ball on spring fig. The easiest way to identify a Muncie transmission is by its side cover.
Another misconception is if you have a drain plug you have a M22. All wide ratio transmissions are designated M20 and close ratio transmissions are designated M21 or M22 depending on the gear set. All documented M22 transmissions have the 3925660 main case. The M22 transmission has a 20 degree helix angle on the gear set as opposed to a 45 degree angle found on the M20 and M21 and were made with a higher nickel alloy. Reported to be M21 but cannot find tag number to verify. The ratio designation letter didn't appear until around October 1, 1968 for the 1969 model year.
Those listed in orange have been found but numbers do not appear in any Chevelle Assembly Manual. Again, not my original route but I have been following the deals for this build. There is a dowel pin in the cover 2. You can be in 2nd just boulevard cruising and show off by stepping on the throttle and hitting the Gear Vendors button on your sifter for 2nd-over which is identical exact same ratio as having shifted to 3rd but only clutchless and with a nice bark of the tires. At this point, I am sold on 3.
Since the M20 and M21 look the same one way to tell them apart aside from the grooves on the input shaft is the tooth count on the cluster gear. Often a hot rodder will say his transmission is grinding in fourth, but geometry is the problem. When shifting from 2nd to 3rd this would suck because you have to go sideways with the shift lever to where 4th gear used to be instead of diagnal and up. These are easy to adapt to a wide range of hot rods. Muncie Four Speed casting numbers identify all aluminum Muncie main cases: 3831704 - 1963 only 3851325 - 1964-'65 3885010 - 1965-'67 3925660 - 1968-'70 3925661 - 1971-'74 The 2.