SPEEDOMETER GEAR CHARTS B207 1977 SPEEDO GEAR USAGE CHART H CAR TRANS W S EDO DRIV N GEAR C V I I I D PTE I A A AXLE MODEL TIRE PART I NO IDENT SLEEVE PART I RATIO CODE SIZE NO TEEI1 I COLOR ASM NO RATIO I CODE M29 BH BR70 13 3987920 20 BLUE 345215 326569 9743 2 56 I M20 ZS BR78 13 3987920 20 BLUE I GMS M75 RN B78 13 3987920 20 BLUE 338975 V M29 BU BR70 13 3987918 18 BROWN M20 ZN BR78 13 3987918 18 BROWN 338975 M75 RM 878 13 3987921 21 345215 368025 1 202 BG 1 2 93 GW9 M29 BH BR70 13 3987922 22 GRAY 345215 368022 94444 BR78 13 3987922 22 GRAY I B78 13 3987922 22 GRAY 345215 326569 9743 M29 Bu BR70 13 3987921 21 RED 3 42 BR78 13 3987921 21 H Q 338975 GU6 B78 13 3987920 20 LUE 345215 326569 9743 AUTOMATIC TRANSM SS ON M29 B L USE A 9 TOOTH DR V NG WORM 8628735 GREEN MANUAL TRANSM SS ON M20 ZS AND M75 RN USE A 9 TOOTH DR V NG WORM 62627 96 RED AUTOMA T C TRANSM SS ON M29 BU USE A 7 TOOTH DR V NG WORM 8628738 P NK MANUAL TRANSM SS ON M20 ZN AND M75 RM USE A 7 TOOTH DR V NG WORM 6261797 BROWN WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION BU CK 41 ii REV 5 81 4 5 c 4 000 GROUP