POWERGLIDE AND TOROUE DRIVE TRANSMISSION 1971 SPEEDOMETER GEAR CHART DRIVE GEARS PART uumszn uumszn or Teen 6261794 Natural B 6261796 Solid Red 9 DRIVEN GEARS 3987918 Brown 18 3987919 Natural 19 3987920 Blue 20 398792l Red 21 3987922 Sllver 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 E7G 14 3987920 6261794 3 083 G78 15 H78 I 3987918 6261794 3 083 F78 14 F70 14 F78 15 3987919 6261794 3 364 E78 14 678 14 3987921 6261794 POWERGLIDE 350 TAXI POLICE ALL TORQUE DRIVE REAR 4 337 4 343 AXLE REAR TIRE SIZE GEAR SPEEDO GEAR SPEEDO RATIO DRIVEN DRIVE 2 733 F78 15 3987919 6261798 2 733 G78 I5 H78 15 3987918 6261796 3 083 E70 14 F78 14 F70 14 3987922 8261796 3 083 E78 14 G70 15 G78 15 F78 15 3987921 6261796 3 083 H7B 15 3987920 6261796 VEGA REAR MODEL 4 337 4 343 AXLE USAGE GEAR SPEEDO GEAR SPEEDO RATIO DRIVEN DRIVE 2 53 P G w 1BC 3987918 6261794 2 92 P G w 1BC 3987921 6261794 2 92 Torque Drive 3987918 6261797 3 36 Torque Drlvs 3987921 5261797 3 36 P G w ZBC 3860347 6261795 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 11 4 337 4 337 214 REV 4 77