SPEEDOMETER GEAR CHARTS C286 1978 SPEEDO GEAR USAGE CHART B CAR DRIVE DRIVEN GEAR GEAR COLOR ADAPTER A 8628838 Purple N 3987919 19 Natural 345215 H 3950354 9744 Y B 6261785 Purple P 3987918 18 Brown 345215 J 3905497 8000 T O 3987921 21 Red 345215 K 6273218 8974 B R 3987920 20 Blue 345215 S 3987922 22 Silver 345215 1978 SPEEDO GEAR USAGE CHART B CAR rms snzs 2 4 6 7 J ov V 0 0 v F 78 5 W9 A nn GR70 15 GR78 15 241 A Fm I5 IIE GR7O 15 HFI78Y15 I I HR78 15 256 IIIEI IEIIII H I 1Eg GR70 15 GR78 15 U3 M38 III IIE FR78 15 IIIII J Gmc 15 GR7B 15 2 08 II EI K HR70 15 HR78 15 i r ri E S H WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORAT ON CHEVFIOLET 10 4 000 GROUP 4 4 c REV 5 31