1 W SPEEDOMETER GEAR CHARTS C283 7 1977 SPEED O GEAR USAGE CHART 1977 A CAR DRIVE DRIVEN TRANS TIRE GEAR GEAR SLEEVE ADAPT 2 56 305 350 M38 G 81 GR 14 81 15 6261785 3987920 345215 2 56 305 350 M38 H 81 HR 15 6261795 3987919 345215 2 73 250 M15 All 6261785 3987921 345215 2 73 250 M38 exc H78 15 6261782 3987919 345215 2 73 250 M38 H78 15 5261782 3987918 345215 2 73 350 M38 G B1 GR 14 81 15 6261785 3987921 345215 2 73 350 M38 H 81 HR 15 6261785 3987920 345215 2 73 350 M38 H78 14 6261785 3987920 345215 3950354 2 3 07 250 M15 FR78 15 6261785 3987919 345215 3905497 3 07 250 M15 G 81 GR78 15 6261785 3987921 345215 6273218 3107 250 M38 FR78 15 6261782 3987922 345215 3 07 250 M38 G 81 GR 14 B1 15 6261782 3987920 345215 3 07 250 M38 H78 15 6261782 3987920 345215 3 07 350 M38 H B1 HR 15 6261785 3987922 345215 3950354 3 07 350 M38 exc H 81 HR 15 6261785 3987921 345215 6273219 l 5 1977 SPEED 0 GEAR USAGE CHART 1977 B CAR nmvz nmvzu GEAR GEAR ADAPT 2 56 350 305 All All 6261785 3987920 345215 2 73 305 350 All exc HR78 15 6251785 3987921 345215 2 73 306 350 All HR78 15 6261785 3987920 345215 1 2 73 250 All All 6261782 3987919 345215 3 07 350 M29 FR78 15 6261785 3987919 345215 3905497 3 07 350 M29 GR78 15 6261785 3987921 345215 6273218 1 3 07 350 M29 GR70 15 6261785 3987921 345215 6273218 3 07 350 M3B FR78 15 6261785 3987919 345215 3905497 3 07 350 M38 GR78 15 GR70 15 6261785 3987921 345215 6273218 3 07 350 M38 HR78 15 HR70 15 6261785 3987922 345215 3950354 1 3 07 250 M38 FR78 15 6261782 3987922 345215 3 07 250 M38 GR78 15 GR70 15 6261782 3987921 345215 1 3 07 250 M38 HR70 15 6261782 3987920 345215 3950354 l e 1 GM PARTS DIVISION GENERAL MOTORS CORPORAT ON CHEVROLET 1 0 4 REV 9 80 an c 4 000 GROUP i H