3 SPEED TRANSMISSION 68 Ser 10 20 w H D 3 Spd 3708144 1 1 65 8 teeth 55 58 V Ton w 0 D 3739602 1 2 75 8 teeth 1 O D x 1V thick 55 62 V2 Ton w 3 Spd exc H D D D 3845073 1 1 75 7 teeth 1 4 O D x 4 thick 55 58 74 Ton w 3 Spd exc H D 3845079 4 1 65 6 teeth 1 4 0 D x 4 thick 59 Ser 3C 3D 3E 3F w 3 Spd exc H D 60 62 Ser 20 30 w 3 Spd exc H D 3756901 1 1 80 4 teeth 1 z O D x z 0 D 60 69 4 WD 2397307 1 10 50 4 teeth 1V 0 D 66 69 All w 0 D 3886328 1 1 70 8 teeth 1 4 0 D x thk 68 70 For application refer to chart in group 4 337 3924097 1 45 8 teeth 68 For application refer to chart in group 4 337 3924098 1 40 8 teeth 68 For application refer to chart in 4 337 group 3866663 1 3 75 68 For application refer to chart in 4 337 group 3925675 1 20 80 69 Blazer exc T H 350 3964593 1 10 65 6 teeth 69 70 For application refer to chart in group 4 337 6261076 1 50 9 teeth green 69 70 For application refer to chart in group 4 337 6261077 1 50 8 teeth black 69 70 For application refer to chart in group 4 337 6261078 1 50 8 teeth orange 4 345 SPACER CL P Speedometer Drive Gear 48 54 All w 3 Spd 591623 1 80 1V 4 D x 1 0 D thick 54 Comm w 3 Spd H D 55 V4 1 Ton w 3 Spd H D 1st Ser 3709338 1 90 1 D x 1 z long 55 59 Comm w 3 Spd H D 2nd Ser 60 66 Ser 10 thru 30 w 3 Spd H D 3719074 1 1 70 1 l D x 4 thick 69 70 All Blazer 6260060 1 10 CLIP drive gear retainer 4 351 GEAR Transmission Main Drive Clutch 40 52 All w 3 Spd 609320 1 22 20 19 helical teeth shift dia 1 z 9 0 L 53 Comm w 3 Spd lst design 3699251 1 21 35 19 helical teeth shaft dia z 9 0 L Note 1 NOTE 1 Can be used to correct high gear disengagement on 1949 52 models but also requires 1 ea 591851 591852 spacers 24 7450247 rollers and 1 3699259 mainshaft 53 54 Comm w 3 Spd 2nd design exc H D 3705067 1 22 20 19 helical teeth shaft dia 9 0 L 54 60 All w 3 Spd H D 3709335 1 32 05 17 helical teeth 1V shaft dia x 9V4 O L 55 59 Ser 3 w 3 Spd exc H D 60 66 Ser 10 20 w 3 Spd exc H D 0 D 67 Ser 10 20 w Muncie 3 Spd exc O D 68 Ser 10 Conv w Muncie 3 Spd 250 exc 0 D H D 68 Ser 10 20 4 WD w Muncie 3 Spd exc H D 3752836 1 22 20 w synchronizer spring Note 2 NOTE 2 When using on 1957 and prior models retainer 3741458 must be used 61 66 Ser 10 thru 30 w 3 Spd H D 3786023 1 33 80 36 teeth 9 V 0 L Warner T89C 16B grooved 64 65 G 10 w 3 Spd 64 65 Ser 10 w O D exc D D 3848101 1 22 40 w synchronizer spring 19 teeth 66 68 Ser 10 w O D 66 67 G 10 20 w 3 Spd exc H D 327 67 Ser 10 20 Conv w Saginaw 3 Spd exc O D 68 70 Ser 10 20 G 10 20 Blazer w Saginaw 3 Spd 3859030 1 22 20 19 teeth 68 Ser 10 20 w H D 3 Spd 3912392 1 37 05 Helical teeth 19 Warner 116A 16 69 70 All Blazer w Muncie 3 Spd 3932211 1 41 75 w slinger assy 18 teeth 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATlON P A 31 7 4 343 4 351 4 52 REV 6 71 i