POWERGLIDE AND TOROUE DRIVE TRANSMISSION 1971 SPEEDOMETER GEAR CHART DRIVE GEARS PART NUMBER COLOR NUMBER F TEETH 6261794 Natural 8 6261796 Solid Red 9 DRIVEN GEARS 3987918 Brown 18 x 3987919 Natural 19 3987920 Blue 20 3987921 Red 21 3987922 Silver 22 POWERGLIDE Exc 350 Taxi Police Vega REAR 4 337 4 343 AXLE REAR TIRE SIZE GEAR SPEEDO GEAR SPEEDO RATIO DRIVEN DRIVE 3 083 E78 14 EE70 14 3987920 6261794 3 083 G78 15 l I78 15 3987918 6261794 3 083 F78 14 F 70 14 F78 15 3987919 6261794 3 364 E78 14 578 14 4 3987921 6261794 POWERGLIDE 350 TAXI POLICE ALL TOROUE DRIVE REAR 4 337 4 343 AXLE REAR TIIRE SIZE GEAR SPEEDO GEAR SPEEDO RATIO DRIVEN DRIVE 2 733 F78 15 3987919 6261796 2 733 G78 15 l I78 15 3987918 6261796 3 083 E70 14 l 78 14 F70 14 3987922 6261796 3 083 E78 14 G70 15 G78 15 F78 15 3987921 6261796 3 083 H78 15 3987920 6261796 VEGA REAR MODEL 4 337 4 343 AXLE USAGE GEAR SPEEDO GEAR SPEEDO RATIO DRIVEN DRIVE 2 153 P G w 1BuC 3987918 6261794 2 92 P G w IELC 3987921 6261794 2 92 Torque Drive 3987918 6261797 3 36 Torque Drive 3987921 6261797 3 36 P G w 2EIC 3860347 6261795 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET l1 1 REV 4 81 4 55 c 4 000 GROUP