SPEEDOMETER GEAR CHARTS P271 1979 SPEEDO GEAR USAGE CHART H CAR a 3 S Tm SIZE A 4r z ga 56 5 0 co v A78 X 13 M38 C IUI BR78x13 BR70x13 B78x13 308 c T 1 A78 X 13 W9 II A L BRvaX13 B1 1v0X13 B78x13 II u L A78x13 BR78x 13 A T L Bnvo X T3 ava X 13 M2 A v J A78x13 BR78x13 A T 2 131370 X 13 Bvs X 13 M20 A S IMI A78x 13 BR78x 13 MZOXX A T 2 BR70x 13 13vaX 13 A 5 IMI Ava X 13 BRva X 13 M7 A T L 13Rv0X13 B78x13 A V J AvaX13 BRvaX13 A T B BR70 X 13 Bva X 13 323 WSS A S IK Ava X 13 aava X 13 WM E T BR70 X 13 Bva X 13 E S M AvaX13 BRvaX 13 M33 IH T B anvo X 13 Bva X 13 II S M A78x 13 M33 C S E BH78x 13 aRv0X 13 13vaX 13 C X H A78x 13 M38 C S ID BR78 X 13 Bnvo X 13 ava X 13 C X H A78 X 13 M29 I I L BR78 X 13 aRv0X 13 BvaX 13 EYE N Q ECE L NOTE With Trans Stamped KA With Trans Stamped KL Q With Trans Stamped US With Trans Stamped UM Engine 23 7 With Trans Stamped UM Engine 757 With Trans Stamped SJ With Trans Stamped SH Engine 237 With Trans Stamped SH Engine 757 1987 GENERAL Mmons SERVICE PARTS OPEHATIONS PONTIAC 21 4 OOO GROUP 4 26 C REV 7 87