250 350 375 400 TURBO HYDRAMATIC 1972 SPEEDOMETER GEAR CHART T H 350 DRIVE GEARS PART NUMBER COLOR NUMBER OF TEE1FH 6260037 Green 18 62161785 Purple 10 DRIVEN GEARS 1359271 Red 37 I 1362049 Green 42 39 87918 Brown 18 3987919 Natural 19 39 87920 Blue 20 39 87921 Red 21 39 87922 Solid Silver 22 9774413 Light Green 34 9775187 Light Blue 45 NOTE To order speedometer gears parts transmission type rear axle ratio tire sizes must be known 1972 T H 350 EXC CAMARO MONTE CARLO T H 350 1st Design Monte Carlo With 7 8 Speedo Driven Gear Hole REAR GEAR GEAR SLEEVE AXLE SPEEDO SPEEDO ADAPTER DRIVEN RATIO REAR TIRE SIZE DRIVEN DRIVE ASSY GEAR 2 733 E78 14 F60 15 E70 14 3987922 6261785 2 733 F78 14 G78 14 F78 15 3987921 6261785 2 733 G70 15 4378 15 H78 15 8 55 15 3987920 6261785 2 733 L78 15 3987919 6261785 3 083 E78 14 1 78 14 F60 15 E70 14 3987920 6261785 3950352 3 083 G78 14 G78 15 F78 15 8 55 15 3987919 6261785 3950352 3 083 H78 15 L78 15 3987922 6161785 3 417 E78 14 1 78 14 G78 14 F60 15 E70 14 3987922 6261785 3950352 3 417 G70 15 G78 15 H78 15 F78 15 8 55 15 3987921 6261785 3950352 3 417 L78 15 3987920 6261785 3950352 j GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 11 REV 4 81 4 37 c 4 00 0 GROUP