SPEEDOMETER GEAR CHARTS C283 1977 SPEED 0 GEAR USAGE CHART 1977 A CAR DRIVE DRIVEN RR AXLE ENG TRANS TIRE GEAR GEAR SLEEVE ADAPT 2 56 305 350 IVI38 G GR 14 15 6261785 3987920 345215 2 56 305 350 M38 H HR 15 6261785 3987919 345215 i 2 73 1250 NI15 All 6261785 3987921 345215 2 73 1250 M38 exc H78 15 6261782 3987919 345215 2 73 250 M38 H78 15 6261782 3987918 345215 2 73 350 M38 G 84 GR 14 15 6261785 3987921 345215 2 73 350 M38 H HR 15 6261785 3987920 345215 f 2 73 350 M38 H78 14 6261785 3987920 345215 3950354 3 07 250 MI5 FR78 15 6261785 3987919 345215 3905497 3 07 250 IVI15 G GR78 15 6261785 3987921 345215 6273218 3 07 250 M38 FR78r15 6261782 3987922 345215 3 07 250 M38 G GR 14 84 15 6261782 3987920 345215 3 07 250 M38 H78 15 6261782 3987920 345215 i 3 07 350 M38 H HR 15 6261785 3987922 345215 3950354 3 07 350 M38 exc H HR 15 6261785 3987921 345215 6273218 1977 SPEED O GEAR USAGE CHART 1977 B CAR DRIVE DRIVEN RR AXLE ENG TRANS TIRE GEAR GEAR SLEEVE ADAPT 2 56 350 305 All All 6261785 3987920 345215 i 2 73 305 350 All exc HR78 15 6261785 3987921 345215 2 73 305 350 AII HR78r15 6261785 3987920 345215 2 73 250 All AII 6261782 3987919 345215 3 07 350 M29 FR78 15 6261785 3987919 345215 3905497 3 07 350 M29 GR78 15 6261785 3987921 345215 6273218 3 07 350 M29 GR70 15 6261785 3987921 345215 6273218 3 07 350 M38 FR78 15 6261785 3987919 345215 3905497 3 07 350 M38 GR78 15 GR70 15 6261785 3987921 345215 6273218 3 07 350 M38 HFI78 15 HR70 15 6261785 3987922 345215 3950354 3 07 250 M38 FR78 15 6261782 3987922 345215 3 07 250 M38 GR7B 15 GR70 15 6261782 3987921 345215 i 3 07 250 M38 HR70 15 6261782 3987920 345215 3950354 VI AREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATl0N C IEVROLET 10 REV 5 81 4 1 c 4 000 GROUP