3 SPEED TRANSMISSION 60 66 Ser 10 4 WD 6 00 x 16 6 50 x 16 6 70 x 15 7 00 x 15 7 50 x 15 7 75 x 15 7 00 x 17 5 8 00 x 17 5 60 66 Ser 20 4 WD 7 50 x 17 8 00 x 19 5 68 For application see chart in group 4 337 2396889 1 4 25 11 teeth stamped S W and 448663 60 66 Ser 20 4 WD 6 50 x 16 7 00 x 15 7 00 x 16 7 00 x 17 5 yr 68 For application see chart in group 4 337 2396890 1 4 25 13 teeth stamped S W and 448665 63 67 Ser 10 20 w 3 Spd exc H D 64 70 G 10 20 68 70 Ser 10 20 Blazer exc 4 WD 3869914 1 2 00 w seal 68 For application refer to V chart in group 4 337 3749242 1 2 15 19 teeth brown and green paint 68 For application refer to chart in group 4 337 3756911 1 2 15 11 teeth yellow and orange paint 68 For application refer to chart in group 4 337 3705582 1 2 35 20 teeth orange and green paint 68 For application refer to chart in group 4 337 3756915 1 2 15 13 teeth green and black paint 68 For application refer to chart in group 4 337 3749303 1 2 15 18 teeth black and white paint 68 For application refer to chart in group 4 337 3756913 1 2 03 12 teeth yellow and purple paint 68 For application refer to chart in group 4 337 3756917 1 2 20 14 teeth green and purple paint 61 66 4 WD w 3 Spd 3783874 1 75 PLUG fitting hole V8 O D 55 59 Ser 3 w 3 Spd 2nd Ser exc H D 60 67 Ser 10 20 w 3 Spd exc H D 65 70 G 10 20 68 70 Ser 10 20 Blazer exc 4 WD 3708148 1 10 RETAINER gear fitting Vu l D 60 70 All Blazer 4 WD 2396891 1 1 45 SLEEVE 55 61 All w 3 Spd exc H D 61 64 4 WD w 3 Spd 62 Ser 10 20 exc D D 4 VVD r wad 62 Ser 10 20 D D 63 Ser 10 20 exc 4 WD H D 64 Ser 10 20 exc 4 WD 65 70 All Blazer 3708146 1 10 SEAL gear fitting O ring hole plug V D 69 Ser 10 20 4 WD 69 70 Blazer 284414 1 35 BUSHING 4 342 SHAFT ASSY SHAFT UNIT Speedometer without Casing 38 Comm 55 59 Ser 3 2nd Ser exc D D 0 0 60 61 Ser 30 exc D D 63 65 Ser 30 exc D D 1562889 1 1 91 58 39 40 All 1563435 1 74 61V Note 1 NOTE 1 Production shaft only Not to be confused with Service Shaft 1563561 41 47 Comm exc D D 49 55 Comm 1st Ser exc D D 55 57 V Ton w 0 D 64 65 Ser 10 w 0 D 1562669 1 1 74 63 V 48 59 D D exc 1 Ton 60 62 Ser 20 30 D D 63 66 4 WD 67 Ser 20 30 D D 6453660 1 3 60 108 60 64 Ser 10 20 exc 4 WD D D O D 65 Ser 10 thru 30 w 3 Spd exc 4 WD D D H D O D 1564778 1 1 86 SGV 48 59 D D exc 1 Ton 60 66 Ser 20 30 D D 63 66 4 WD 1563768 1 3 13 98 39 55 Comm 1st Ser exc D DI 55 57 V2 Ton w O D 1563561 1 2 03 68 Note 2 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31 4 338 4 342 4 50 REV 6 71