4 SPEED TRANSMISSION 1968 PASSENGER SPEEDOMETER GEAR CHART NOTE To order Speedometer Gears or Parts Transmission Type Rear Axle Ratio and Tire Size must be known 4 343 4 337 4 329 REAR GEAR GEAR AXLE TIRE SIZE SPEEDO SPEEDO ADAPTEFI RATIO DRIVE DRIVEN SPEEDO 4 SPEED TRANSMISSION exc O D 2 73 8 55 x14 8 15 x 15 8 45 x 15 G70 x 15 3905494 3987918 2 73 8 25 x 14 3905494 3987919 3 07 8 55 x 14 8 15 x 15 8 45 x 15 G70 x 15 6261794 3987918 3 07 8 25 x 14 F70 x 15 6261794 3987919 3 08 8 55 x 14 8 15 x 15 8 45 x 15 G70 x 15 6261794 3987918 3 08 8 25 x 14 F7O x 15 6261794 3987919 3 31 8 45 x 15 6261794 3987919 3 31 8 25 x 14 8 55 x14 8 115 x 15 F70 x 15 G7 x 15 6261794 3987920 3 36 8 25 x 14 8 55 x14 8 115 x 15 F70 x 15 G70 x 15 6261794 3987920 3 55 8 25 x 14 8 25 x14 8 15 x I5 8 45 x 15 G70 x 15 6261794 3987921 3 55 F70 zx 15 3860345 3 70 8 25 x 14 8 55 x 14 8 15 x 15 F70 x 15 G70 x 15 3860345 3 70 8 45 x 15 6261794 3987921 3 73 8 55 x 14 8 15 x 15 8 45 x 15 G70 x 15 3860345 3 73 8 25 x 14 F70 x 15 3860348 4 10 8 55 x 14 8 15 x 15 8 45 x 15 G70 x 15 3860347 4 10 8 25 x 14 3860348 4 11 F70 x 15 3860348 4 56 8 55 x 14 8 45 x 15 3860345 3890575 4 56 8 25 x 14 8 15 x 15 G70 X 15 3860346 3890575 4 56 F7O x 15 3845079 3860033 4 89 8 55 x 4 8 15 x 15 8 45 x 15 G70 x15 3860347 3890575 4 89 8 25 x 4 3860348 3890575 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROI ET 11 REV 4 81 4 11 c 4 000 GROUP