SPEEDOMETER GEAR CHARTS 1981 SPEEDO GEAR USAGE CHART G1 2 3 3 SPEED MC1 M62 M63 M64 DRIVE DRIVEN A GEAR GEAR ADAPTER A 8261794 Natural N 3987918 18 Brown 345215 H 14020899 1 0888 BV P 3987919 19 Natural 345215 I 3950352 0 8242 C O 3987920 20 Blue 345215 J 3905497 0 8000 T R 3987921 21 Red 345215 K 3925669 0 9444 W 5 3987922 22 Gray 345215 TIRE SIZE 7 AXLE 7 TRANS l Q 6 i Y GR7B 15 F215I75R15 2 73 G FR78 15 1178 15 1 215n5n15 3 08 MGZIMHMS4 2 II 1 22sn5n15 M01 A IH Y FF 7B 5 GR7B 15 PZ15I75R1 A IRI 1 225r7sR15 A IE PZZS 75R15 M01 A IE5 KY 1 225175n15 3 73 A r r KKK 8 75 15 5 HH I B 75 1s 500r 75 15 5 3 75 MCI A IIE 5 00 16 5 A E a 75R 15 5 A IEI KZ 8 7516 5 A H K a 75 1s 500R s 7sn 1s s we M01 A lI I 8 0046 5 K 1 8 75 16 5 A mx 8 75 16 50DR 8 75R 16 5 M01 A ll I 8 00 15 5 A K I YY 8 75 16 5 A n J 5 75 1s 5 0n 8 75116 5 M01 A IHHI 22 00 15 5 A IEHI YY 5 A 2 GENEML MOTORS SERVICE PARTS OPERATIONS LT TRUCK 52A E 4 000 GROUP SPEEDOMETER GEAR 42 REV 2 87