SPEEDOMETER GEAR CHARTS V69 4 SPEED TRANSMISSION DRIVEN GEAR Part Driven No Gear Teeth Color Code 3860033 21 3987918 18 Brown 3987919 19 Natural 3860345 22 Green 3860346 23 Black 3860347 24 Yellow 3860348 25 Orange 3987919 19 Natural 3987920 20 Blue 3987921 21 Red 3987922 22 Silver 1968 CORVETTE 4 SPD TRAINSMISSION SPEEDOMETER GEAR CHART NOTE To order Speedometer Gears or Parrs Transmission Type Rear Axle Ratio and Tire Size must be known 4 343 4 337 4 329 REAR GEAR GEAR 4 329 AXI E SPEEDO SPEEDO ADAPTER RATIO TIRE SIZE DRIVE DRIVEN SPEEDO 2 73 8 15 x 15 8 45 x 15 4370 x 15 3905494 3987918 3 07 8 15 x 15 8 45 x 15 4370 x 15 6261794 3987918 3 0 7 F70 x 15 6261794 3987919 3 0lB 8 15 x 15 8 45 x15 4670 x 15 6261794 3987918 3 048 F70 x 15 6261794 3987919 3 31 8 45 x 15 6261794 3987919 3 31 8 15 x 15 F70 x 15 G70 x 15 6261794 3987920 3 346 8 15 x 15 F70 x 15 G70 x 15 6261794 3987920 3 55 8 15 x 15 8 45 x 15 G70x 15 6261794 3 55 F70 x 15 3860345 3 70 8 15 x 15 F70 x 15 G70 x 15 3860345 3 70 8 45 x 15 6261794 3 73 8 15 x 15 8 45 x 15 G70 x 15 3860345 3 73 F70 x 15 3860348 4 10 8 15 x 15 8 45 x 15 G70 x 15 3860347 4 11 F70 x 15 3860348 4 56 8 45 x 15 3860345 3890575 4 56 8 15 x 15 G70 x 15 3860346 3890575 4 56 F70 x 15 3845079 3860033 4 89 8 15x 15 8 4514 15 G70 x 15 3860347 3890575 WAREHOUSING AND DISTRIBUTION DIVllSION OF GENERAL MOTORS CORPORAT 0N CHEVROLET 14 REV 5 81 4 3 c 4 000 GROUP