3 SPEED TRANSMISSION 4 1 O3 CASE Transmission 48 54 Comm w 3 Spd 591631 1 44 15 w plugs cast 591615 54 66 All w 3 Spd H D 3786986 1 55 50 Warner 1AT89C 1C 55 68 All w Muncie 3 Spd 3830204 1 34 65 w plugs Note 1 NOTE 1 On models prior to 1963 it will be necessary to use 1 3820060 washer 1 3746442 washer and 1 457202 bearing Models prior to late 1960 that do not use a 1 68 dia rear face on the reverse V idler will require 1 3830211 64 65 Ser 10 w O D 3866761 1 34 40 66 67 Ser 10 w O D 3886076 1 34 40 w magnet 66 70 G 10 20 Ser 10 20 Blazer w 3 Spd exc 0 D 3925642 1 34 40 w magnet Saginaw Note 2 NOTE 2 Also order 2 each 455001 Bolt 9414511 Nut and 131101 Washer 68 69 Ser 10 w O D 3925680 1 33 80 w magnet 68 Ser 10 20 w H D 3 Spd 3931534 1 33 80 w magnet 69 All w Muncie 3 Spd 3974479 1 38 35 w magnet 70 All w Muncie 3 Spd 3974479 1 38 35 w magnet Note 3 NOTE 3 It may be necessary to drill out front mounting holes and install a V1 pipe plug in drain hole 4 104 BREATHER SHIM UNIT VENT Transmission Case 61 66 All w 3 Spd H D 3786022 1 20 Warner T94 95 49 70 All w 3 Spd 3887055A R 55 SHIM UNIT to clutch hsg 4 002 2 005 and 1 010 shims 66 68 All w 0 D 389668 1 85 VENT Warner 4740C 4 105 COVER BOLT PLUG Transmission Case 54 66 All w H D 3 Spd 3709340 1 7 90 forged T89B 148 55 Comm w 3 Spd 1st Ser 1st design exc H D 3845044 1 6 15 w counter bore cast 3845044 55 59 Ser 3 w 3 Spd 2nd Ser 2nd design exc l l D 60 64 Ser 10 20 w 3 Spd exc H D 3845157 1 6 70 less counter bore cast 3845157 65 66 Ser 10 20 w 3 Spd exc H D 67 Ser 10 20 w Muncie 3 Spd exc O D 68 Ser 10 20 w Muncie 3 Spd exc O D D D 3731900 1 5 35 scissors type cast 3731911 68 Ser 10 20 w H D 3 Spd 3870808 1 7 65 Warner T16 148 66 70 G 10 20 w 3 Spd 1st design exc H D 66 69 Ser 1 w 0 D 67 68 Ser 10 20 w 3 Spd exc D D 4 WD 69 Ser 10 20 w Saginaw 3 Spd exc D D 4 WD 69 Ser 20 D D w Saginaw 3 Spd 69 Blazer w Saginaw 3 Spd 3919365 1 8 15 stamped 3919365 68 70 G 10 20 w Saginaw 3 Spd 68 69 Ser 10 20 D D w Saginaw 3 Spd 3924759 1 18 75 70 Ser 10 20 Conv w Saginaw 3 Spd 70 Blazer 4 WD w Saginaw 3 Spd 3952645 1 12 15 70 Ser 10 20 D D w Saginaw 3 Spd 3952684 1 9 80 69 70 Ser 10 20 w Muncie 3 Spd exc D D 3977508 1 8 85 COVER ASSY 69 70 Ser 20 D D w Muncie 3 Spd 3977509 1 8 40 COVER ASSY 68 Ser 10 20 w H D 3 Spd 3871520 2 15 BOLT Vu 18 x V4 38 70 All 3930923 1 1 05 PLUG trans case magnet V2 4 107 SEAL RETAINER Trans Case Cover and Gearshift 48 55 Comm w 3 Spd 1st Ser 1st design exc H D 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATl0N P A 31t 4 103 4 1 07 4 34 REV 6 7 I