SPEEDOMETER GEAR CHARTS 1969 CORVETTE SPEEDOMETER GEAR CHART V53 NOTE T0 order Speedometer Gears or Paris Transmission Type Rear Axle Ratio and Tire Size must be known 4 343 4 337 REAR GEAR GEAR 4 329 AXLE TIRE SIZE SPEEDO SPEEDO ADAPTER RATIO DRIVE DRIVEN SPEEDO 2 56 F7O x 15 G70 x 15 G78 x 15 3987919 3925673 2 73 G70 x 15 G78 x 15 8 25x 15 8 55x 15 3987918 2 73 F70 x 15 3987919 3 07 8 25 x 15 G7O x 15 G78 x 15 6261794 3987918 3 07 8 55 x 15 3987920 3 07 E7O x 15 F7O x 15 3 08 8 55 x 15 G7O x 15 G78 x 15 6261794 3987918 3 31 8 55 x 15 6261794 3987919 3 31 8 25 x 15 E70 x 15 F70 x 15 G7O x 15 G78 x 15 6261794 3987920 3 36 8 15 x 15 8 55 x 15 F7O x 15 G7O x 15 G78 x 15 6261794 3987920 3 55 8 25 x 15 8 55 x 15 G70x15 G78x15 6261794 3 55 E7O x 15 F7O x 15 3860345 3 73 8 25 x 15 8 55 x 15 G70 x 15 G78 x 15 3860345 3 73 E70 x 15 F70 x 15 3860346 4 10 8 25x 15 8 55x 15 G70x 15 G78x 15 3860347 4 56 8 55 x 15 6261794 3987919 3932220 4 56 8 25 x 15 G70 x 15 G78 x 15 6261794 3987920 3932220 4 56 8 25 x 15 6261794 3987920 3932220 4 88 8 25 x 15 8 55 x 15 G70 x 15 G78 x 15 6261794 3932220 1970 CORVETTE SPEEDOMETER GEAR CHART 4 337 4 343 REAR GEAR GEAR AXLE REAR TIRE SIZE SPEEDO SPEEDO RATIO DRIVEN DRIVE 3 07 G70x 15 G78x 15 H78 x 15 8 25 x 15 3987918 6261794 3 07 F78 x 15 3987919 6261794 3 08 H70 x 15 F78 x 15 3987919 6261794 3 08 G7O x 15 G78 x 15 H78 x 15 8 25 x 15 3987918 6261794 3 36 H70 x 15 H78 x 15 3987920 6261794 WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS COI 1PORATION CHEVROLET I4 4 000 GROUP 4 2 c REV 5 81