SPEEDOMETER GEAR CHARTS P283 1980 SPEEDO GEAR USAGE CHART H CAR GEAR GEAR ADAPTER A 6261797 Brown N 3987918 18 Brown 345215 H 1565174 1 1330 B 8628794 Gray P 3987919 19 Natural 345215 l 25032146 1 2140 11 C 6261782 Green O 3987920 20 Blue 345215 J 368025 1 2020 BG D 8628837 Maroon R 9774413 34 L1 Green 25512340 l 368026 1 3000 BH S 3987922 22 Gray 345215 L 6479661 1 0000 T 1359270 36 White 25512340 U 9780628 35 Pink 25512340 V 1359272 38 Blue 25512340 W 1359273 39 Brown 25512340 X 3987921 21 Red 345215 Y 1362195 41 Yellow 25512339 Z 1362048 40 Black 25512339 NOTE 11 Keys Required 867209 lnput 6476970 Outpur 47 47 43 TIRE SIZE TRANS lg 41 Q Q7 Q 44 Q ca 0 v A78 x 13B BR70 X 13B A N H 878 X 13B 8878 X 13 M2 A ml A78 X 13B 8870 X 13B 8878 X 13 A n J B78x 13B M2 A Q l All 2 56 M29 Q 3 L E M38 C N L A78X138 8870X138 M16 Q N rl 878 X 13B 8878 X 13 Q A78 X 13B 8870 X 13B A n 8 878 X 13B 8878 X 13 M2 A Q A78 X 13B BR70 X 13B A S l 878X 13B 8878 X 13 2O A Q J A 78 x 13B BR70 X 13B BR78 X 13 H T L 878 X 13B 273 W9 I u L All M38 c Q L A78x 13B 8870X 13B BR78x 13 M16 F Y H 1 x13B llldll jj M20 A N L All M20 A IEIQ A78 X 13B 8870 X 13B la w L 878 X 13B 8878 X 13 293 W9 IQ v L A78 X 13B BR70 X 13B c X L 878 X 13B 8878 X 13 V 38 c Q L All M16 IQ N L All M20 A n L All M20 A IIQ A78 X 13B 8870 X 13B Y L 878 X 13B 8878 X 13 308 M29 Q z L A78 x 13B BR70 X 13B C S L 878 X 13B 8878 X 13 M38 c x L All M16 Q I L NOTE l l th Trans Stamped SH With 751 Englne W th Trans Sramped SH Except 157 Eng ne 1987 GENERAL MOT08s SERVICE PARTS 0PE8AT101ls l 0llT1Ac 21 4 OOO GROUP 4 38 C REV 7 87