3 SPEED TRANSMISSION 1968 PASSENGER SPEEDOMETER GEAR CHART NOTE To order Spsedcmetsr Gears nr Parts Transmission Type Hear Axle Hat 0 sm 1 Nr 1 mus be knuwn 4 343 4 337 4 329 REAR GEAR GEAR AXLE TIRE SIZE SPEEDO SPEEDO ADAPTER RATIO DRIVE DRIVEN SPEEDO 3 SPEED H D 3 SPEED exc O D 2 73 8 55 X 14 8 15 X 15 8 45 X 15 G70 X I5 3905494 3987918 2 73 8 25 X 14 3905494 3987919 3 07 8 55 X 14 8 15 X 15 B 45X15 G70X15 6261794 3987918 3 07 8 25 x 14 F70 X 15 6261794 3987919 3 08 8 55 X I4 8 15 x 15 8 45x15 G70X15 6261794 3987918 3 08 8 25 X 14 F70 X 15 6261794 3987919 3 31 8 45 X 15 6261794 3987919 3 31 8 25 X 14 8 55 X 14 8 I5 X 15 F70 X 15 G70 X 15 6261794 3987920 3 36 8 25 X 14 8 55sX 14 8 15x15 F70X15 G70 X 15 6261794 3987920 3 55 8 25 X 14 8 55 X 14 8 15X15 8 45X15 G70 X 15 6261794 3987921 3 55 F70X 15 3924097 3860345 3 70 8 25 X 14 8 55 x I4 8 15X15 F70X15 I G70 X 15 3924097 3880345 3 70 8 45 X I5 6261794 3987921 3 73 8 55 x 14 8 15 X 15 8 45 X 15 G70 X 15 3924097 3860345 3 73 8 25 X 14 F7O X 15 3924097 3860348 4 10 8 55 x 14 8 15 X 15 8 45 X 15 G70 X 15 3924097 3860347 4 10 8 25 X 14 3924097 3860348 4 11 F70 X 15 3924097 3860348 4 56 8 55 X 14 8 45 X 15 3924097 3880345 3890575 4 56 8 25 X 14 8 I5 X 15 G70 x 15 3924097 3860346 3890575 4 56 F7O X 15 3845079 3860033 4 89 8 55 X 14 8 15 X 15 8 45 X 15 G70 X 15 3924097 3860347 3890575 4 89 8 25 X 14 3924097 3860348 3890575 3 SPEED TRANSMISSION w O D 3 70 8 25 X 14 8 55 X 14 8 45 X 15 G70 X 15 3924097 3860345 GM PARTS DIVISION GENERAL MOTORS CORPORATION CI 1EVROLET 11 1 REV 4 77 4 Z1 4 337 4 337