Product Description
Build your own rebuild kit for the Muncie M20/M21/M22 manual transmission. Early Muncie with the 7/8" (.875") countershaft pin, 10-spline input, 27-spline mainshaft. Pick the overhaul kit that matches your case, then add only the parts you need.
Build your own MUNCIE rebuild kit: choose the parts that match the transmission on your bench and leave out what you don't need. This builder has 7 option groups and 21 choices, all optional, so the kit holds only what you pick.
What you can choose
- Choose Your Overhaul Kit: BK117WS Master kit: bearings + seals + gaskets + small parts + synchro rings, 7/8" pin; BK117 Bearing, seal, gasket & small parts kit, 7/8" pin (no rings)
- Add Synchronizer parts: 304703K Complete synchro assembly, 1-2 or 3-4 position; 304701 Brass synchro ring, no step (1964-65) - each; 304701-2K Synchro key & spring kit
- Add Cluster gear & countershaft: 304674 Cluster gear 27-22-19-17, close ratio, 7/8" pin; 304674A Cluster gear 29-22-19-17, wide ratio, 7/8" pin; WT297-3 Countershaft pin, 7/8" OD
- Add Input shaft & mainshaft: 304670 Input shaft 26T, 10-spline, close ratio (1964-70); 304670A Input shaft 24T, 10-spline, wide ratio (1964-65); 304672 Mainshaft, 27-spline
- Add Mainshaft & reverse gears: 304581 1st gear 36T; 304582 2nd gear 30T; 304583A 3rd gear 27T; 304587 Reverse gear 35T; 304820 Reverse idler shaft
- Add Gear kits: 304580 Wide-ratio gear kit 2.56 1st, 10-spline, 7/8" pin
- Add Bearings, seals & small parts: 304001 Small parts kit, 7/8" pin; 304000 Gasket set; 344073 Shifter shaft seal (each; 3 needed); 304798 Input shaft nut
