T4 20 1973 78 MUNCIE 4 SPEED TRANSMISSION I PIN Straight Solid Duwel 3 8 x 40 IEARING ASM Front 4 422 5 B 4 4 8 939 41 RING Clutch Counter Gear Ret 1 2 VENT ASM Trans r r 4 104 31 32 ID r 4 422 3 PLUG 8 970 42 WASHER Gear Thrust 21 Teeth 2 4 COVER Trans Case 4 105 5 8 OD 4 423 5 GASKET Case Cover 4 109 43 GEAR Counter Part ol Gear Unit 6 BOLT Cover 4 105 Clutch Counter Gear Group 4 421 N S 7 BALL Shifter 8 899 44 SPACER Clutch Counter Gear 21 8 PIN Interlock 4 307 Teeth 2 1 I6 ID 4 426 9 SPRING Yoke Lock Ball I0 Coils 4 311 45 RING Clutch Counter Gear Ret 1 10 SHAFT Ist and 2nd Fork 4 309 31 32 ID 4 422 I1 SHAFT 3rd and 4th 4 309 46 RING 3rd Speed Counter Gear Ret 4 376 12 SHAFT Reverse Fork 4 309 47 GEAR ASN 3rd Speed Counter 36 13 FORK 3rd and 4th 4 303 Teeth 4 421 14 PIN Spring S otted 3 16 Hole 48 GEAR ASM Counter 14 17 23 Teeth 4 421 Size I 1 8 OL 8 939 49 BEARING Counter Gear Rear 4 422 15 FORK lst and 2nd 4 303 50 RING Counter Gear Rear Brg Ret 4 422 16 PLUNGER Reverse Fork 4 303 51 RING Counter Gear Ret 4 422 17 SPRING Reverse Shifter Fork 2 52 SHAFT Reverse Idler 4 433 11 32 OL 4 307 53 GEAR ASM Reverse Idler 23 Teeth 4 430 18 FORK Reverse 4 303 54 COVER P T O 6 Ho es 1 T Dia 4 439 19 CONE 3rd and 4th Speed Sync 4 383 55 GASKET P T O Cover 4 439 20 RING 3rd and 4th Huh Ret 4 384 56 SCREW ASM W Washer Gear 21 CLUTCH 3rd and 4th 4 380 Retainer 4 356 22 KEV 3rd and 4th 4 384 57 RETAINER Clutch Gear Includes y 23 SPRING 3rd and 4th Speed Clutch 81 4 356 Key 4 413 58 GASKET Clutch Gear Retainer 4 358 24 HUB 3rd and 4th Speed 4 384 59 RING Main Dr Gr Brg Ret 4 376 25 CONE 3rd and 4th Speed Sync 4 383 60 BEARING W Slinger Main Dr Gr 4 355 26 GEAR 3rd Speed 4 415 61 SLINGER Bearing Oil 4 374 27 BUSHING 3rd Speed Gear I 51 G4 62 RING Main Dr Gr Brg Ret 4 378 ID l 63 64 OL 4 399 63 RING Main Dr Gr Rlr Brg Oil Ret 4 384 28 WASHER 3rd Speed Gear Thrust 4 416 64 GEAR Main Dr 17 Teeth 4 351 29 GEAR 2nd Speed 35 Teeth 4 395 65 SCREW Pan Head Slotted 10 24 x 30 CONE 2nd Speed Sync 4 383 3 B 8 913 31 BUSHING lst and 2nd Speed Gear 2 86 ROLLER Mainshaft Pilot 4 352 l7 32 OD x 2 1I S4 ID x I 27 32 87 CAP Front Brg 4 422 DL 4 399 68 GASKET Front Brg Cap 4 423 32 SHAFT Main 15 5 8 OL 4 403 69 PLUG Case 8 971 33 SPRING Ist and 2nd Speed Clutch 70 CASE W Plugs 4 103 Key 4 413 71 RING Mainshaft Rear Brg Ret 4 4I2 34 KEV 1st and 2nd 4 384 72 WASHER lst Speed Gear Thrust 4 419 35 HUB Ist and 2nd Speed 4 384 73 BEARING Mainshaft Rear 4 408 36 GEAR Reverse 44 Teeth 4 417 74 GEAR Speedo Drive 4 343 37 BUSHING Ist and 2nd Speed Gear 2 75 GASKET Rear Brg Retainer 4 318 I7 32 OD x 2 ll G4 ID x 1 27 32 76 RETAINER ASM Rear Brg 4 317 OL 4 399 77 BOLT Rear Brg Retainer 4 317 38 PIN Spring Use W 5 16 Hole 78 SEAL Rear Brg Retainer 4 318 Size 3 4 OL 8 939 79 FLANGE Ujt Front 5 555 39 GEAR ASM Ist Speed Includes item 80 NUT ASM Ujt Front Flange Lock 4 405 38 4 417 81 SEAL Clutch Gear Oil Bearing Included W Item 57 4 354 y WAREI IOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION LT TRUCK 51A 2 83 us 4 000 GROUP