SPEEDOMETER GEAR CHARTS C287 1978 SPEEDO GEAR USAGE CHART F CAR O 9 5 DRIVE 5 DRIVEN kv 0 GEAR 0 GEAR COLOR SLEEVE 0 ADAPTER RATIO P A 6261785 10 Purple N 3987919 19 Natural 345215 H 3950352 8242 C B P 3987922 22 Silver 345215 C 6261796 9 Red O 3987920 20 Blue 345215 D 62617 34 8 Orange R 3987921 21 Red 345215 E 361002 7 Green 1978 SPEEDO GEAR USAGE CHART 5 42 TIRE SIZE AXLE TRANS Q S Q A 3 F v Cv 0 v E78 14 FR78r14 2 41v I I A N 1278 14 rms 14 272 M15 A P Q I 7sr1d I R78 14 lVl38 A P Q Pgs 14 FR78r14 308 M20 c P Q E78 14 FR78P14 f NI38 A f O H 7 0 15 ML M lil R 1i J DE M D g P D0 Q E 4 W 7 C j Q25I7OR15 ji V 38 c P BA L r P EQg Iwg T 2 E E 3 732 WI 2 P 27 WAREHOU5ING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION CHEVROLET 1O 7 REV 5 81 4 5 C 4 000 GROUP