TURBO HYDRAMATIC TRANSMISSION 4 337 GEAR Transmission Speedometer Driven Gears Only NOTE For detailed application use speedometer gear chart 66 Ser 10 D D w 4 11 axle 7 50 16 66 Ser 10 w 3 73 axle 6 50 16 7 00 15 7 17 5 66 G 10 w 3 36 3 31 axle 3860344 1 80 7 35 x 14 66 Ser 10 w 3 07 axle 3860341 1 80 6 00 16 6 50 16 6 70 15 7 10 15 8 15 15 7 17 5 8 17 5 7 00 15 7 50 15 66 Ser 10 w 3 73 axle exc 4 Dd 6 00 x 16 6 70 x 15 7 10 x 15 7 75 15 8 15 15 66 Ser 10 20 w 4 11 axle exc 4 Spd z 7 00 16 8 x 17 5 7 50 x 15 7 17 5 66 Ser 20 w 4 57 axle exc 4 Spd 8 x 19 5 7 50 x 17 8 45 15 66 G 10 w 3 36 axle 3860345 1 80 6 50 x 13 7 00 x 13 green 22 teeth 66 Ser 10 thru 30 w 4 11 axle 6 00 x 16 6 50 x 16 7 17 5 7 00 x 15 67 Ser 20 w 4 57 axle 7 00 x 17 67 G 10 w 3 73 axle 3860346 1 80 7 00 x 14 66 67 All T H w 2 73 1st design 1359273 1 90 7 75 x 15 8 25 x 14 8 15 x 15 8 55 x 14 brown 39 teeth Note 2 66 67 All T H w 2 72 2nd design 1359271 1 1 10 7 75 x 8 25 x 14 8 15 x 15 8 55 x 14 red 37 teeth Note 2 66 67 All T H w 2 73 1st design 1362048 1 95 7 75 x 14 bIack 40 teeth Note 2 66 67 All T H w 2 73 2nd design 1359272 1 90 7 75 x 14 blue 38 teeth Note 2 66 All T H w 3 07 1st design 9780470 1 95 8 55 x 14 8 15 x 15 drk gray 44 teeth Note 2 66 67 All T H w 3 07 2nd design 1362195 1 1 70 8 55 x 14 8 15 x 15 8 45 x 15 ye ow 41 teeth Note 2 66 67 All T H w 3 31 7 75 x 14 7 75 x 15 8 25 x 14 8 55 x 14 8 15 x 15 66 All T H w 3 07 1st design 9775187 1 2 15 7 75 x 14 7 75 x 15 8 25 x 14 lt bIue 45 teeth Note 2 66 67 All T H w 3 07 2nd design 1362049 1 1 05 7 75 x 14 7 75 x 15 8 25 x 14 green 42 teeth v Note 2 66 67 Ser 20 T H w 4 11 4 57 5 14 7 00 x 17 7 x 17 5 7 00 x 18 67 All T H w 3 31 axle 1362196 1 1 15 8 45 x 15 purp e 43 teeth Note 2 NOTE 2 Used selectively 67 Ser 10 20 Conv T H w 3 07 axle 9774413A R 1 60 6 50 x 16 7 00 x 15 7 75 x 15 7 x 17 5 8 00 x 16 5 8 15 x 15 8 75 x 16 5 9 50 x 16 5 light green 34 teeth 67 Ser 10 thru 30 Conv T H w 3 07 axle 9780628A R 95 7 75 x 15 8 00 x 16 5 9 50 x 16 5 pink 35 teeth GEAR UNITS Drive Driven Part Gear Part Gear Part Gear No Teeth No Teeth No Teeth 3689232 4 14 3704320 4 11 3760340 7 19 3689178 4 13 3707598 5 13 3760341 4 12 3689223 4 12 3709359 7 20 3760342 4 13 3692235 6 20 3752390 7 20 3760343 4 11 3692233 5 14 3752392 7 18 3760358 4 13 3695417 6 18 NOTE For usage of the above speedometer gears together with adapters Group 4 329 for various tire sizes transmission and rear axle ratios use table below The following combinations are based on tires having highway type treads For other types sizes and odometer corrections factor see Service and Mechanical Dept Product Data Book Section X11 3 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATlON P A 31 4 337 4 337 4 180 REV 6 71