TURBO HYDRAMATIC TRANSMISSION 1971 SPEEDOMETER GEAR CHART T H 350 DRIVE GEARS Part Number Color Number of Teeth 6261610 Purple 10 DRIVEN GEARS 3987919 Natural 19 3987920 Blue 20 3987921 Red 21 3987922 Silver 22 NOTE To order speedometer gears and parts transmission type rear axle ratio and tire size must be known T H 350 exc Camaro REAR 4 337 4 343 4 329 AXLE REAR TIRE SIZE GEAR SPEEDO GEAR SPEEDO ADAPTER RATIO DRIVEN DRIVE ASSY 2 563 E70 14 E78 14 F78 14 G78 14 3987920 6261610 2 733 F78 14 G78 14 F78 15 3987921 6261610 2 733 E78 14 3987922 6261610 2 733 G70 15 G78 15 H78 15 3987920 6261610 2 733 L78 15 3987919 6261610 3 071 E70 14 3987920 6261610 3950352 3 083 G78 14 F78 15 G78 15 3987919 6261610 3950352 3 083 E78 14 F78 14 3987920 6261610 3950352 3 083 H78 15 L78 15 3987922 6261610 3 308 E70 14 E78 14 3987922 6261610 3950352 3 308 F78 14 G78 14 3987921 6261610 3950352 3 308 G70 15 G78 15 3987920 6261610 3950352 3 364 E70 14 E78 14 3987922 6261610 3950352 3 417 G78 14 F78 15 G78 15 3987921 6261610 3950352 3 417 1 178 15 08 15 3987920 6261610 3950352 T H 350 CAMARO REAR 4 337 4 343 4 329 4 330 AXLE REAR TIRE SIZE GEAR SPEEDO GEAR SPEEDO ADAPTER KEY SPEEDO RATIO DRIVEN DRIVE ASSY ADAPTER 2 733 E78 14 3987922 6261610 2 733 F70 14 F78 14 3987921 6261610 3 083 F70 14 3987920 6261610 6477965 867209 3 417 E78 14 3987920 6261610 6477964 867209 3 417 f78 14 F70 14 3987922 6261610 6477965 867209 T H 400 DRIVE GEARS PART NUMBER COLOR NUMBER OF TEETH 8623311 Orange 16 8623313 Yellow 18 DRIVEN GEARS 9780628 Pink 35 1359270 White 36 1359271 Red 37 1359272 Blue 38 1359273 Brown 39 1362048 Black 40 1362195 Yellow 41 1362049 Green 42 1362196 Purple 43 9780470 Dark Gray 44 9775187 Light Blue 45 NOTE To order speedometer gears and parts transmission type rear axle ratio and tire size must be known T H 400 w 400 454 exc Sp H Per Camaro REAR 4 337 4 343 4 329 4 338