SPEEDOMETER GEAR CHARTS TURBO HYDRAMATIC TRANSMISSION DRIVEN GEAR Driven Gear Teeth Color Coda 1359270 36 White 1 1359271 37 Red 1359272 38 Blue 1359273 39 Brown 1362048 40 Black 1362049 42 Green 1362195 41 Yellow 1362196 43 Purple 9774413 34 Lt Green 9775187 45 Lt Blue 9780470 44 Gray 9780628 35 Pink 1 1968 CORVETTE TURBO HYDRAMATIC TRANSMISSION T H 400 1 SPEEDOMETER GEAR CHART 1 OTE T0 order Speadometer Gears or Parts Transmission Type Hear Axle Ratio and Tire Size must be known 4 14 1 4 337 1 REAR GEAR GEAR 4 329 AXLE SPEEDO SPEEDO ADAPTER 1 RATIO TIRE SIZE DRIVE DRIVEN SPEEDO I 2 73 8 45 x 15 r r r 8623313 1359270 1 2 73 8 15 15 F70x15 1 V G70 x 15 r 8623313 1359271 1 y 3 07 8 15 x 15 8 45 x 15 G70 x 15 8623313 1362195 3 08 8 15x15 8 45x15 2 G70x15 8623313 1362195 Q 3 08 F70 x15 8623313 1362049 1 3 31 8 45 x 15 8623313 1362196 3 31 8 15 15 G70x15 8623313 9775187 1 3 36 8 45 x15 8623313 1362196 3 36 8 15x 15 G70x 15 8623313 9775187 l 1969 CORVETTE SPEEDOMETER GEAR CHART NOTE To order Spesdomatar Gears or Parts Transmission Type Rear Axle Ratio and Tire Size mus be A known 1 TURBO HYDRAMATIC TRANSMISSION T H 400 exc H D Sp H Per 427 1 1 use 1 4 343 4 337 SLEEVE 2 REAR GEAR GEAR SFEEDO AXLE TIRE SIZE SPEEDO SPEEDO DRIVEN 1 RATIO DRIVE DRIVEN GEAR 2 73 8 55 x15 G78 x 15 8623313 1359270 2 73 G7O x 15 8 25 x 15 8623313 1359270 2 73 F70 x 15 8623313 1359271 1 3 07 8 55 x 15 8623313 1362048 3 07 G7O x15 8 25 x 15 1 G78 x 15 8623313 1362195 3 08 8 55 x 15 8523313 1362048 3 08 G70 x 15 8 25 x 15 G78 x 15 8623313 1362195 3 05 F70 x 15 8624738 1362049 3 30 8 55 x 15 8623313 1382196 1 3 30 G70 x15 8 25 x15 1 G7B x 15 8623313 9780470 I GM PARTS DIVISION GENERAL MOTORS CORPORAT1ON CHEVROLET I4 T REV 5 80 4 7 C 4 000 GROUP 1