1987 SPEEDO GEAR USAGE CHART G GAR C0nt1mu d V D D A R G R G D I E I E A V A V A P TIRE SIZE AXLE TRANS E R E R T N R P205 75R14 C X P215 65R15 3 08 MW9 98 C Y I P215 65R15 I 3 73 MW9 E Y NOTE 90 ENGINE 305 1 LG4 4 32 LB4 91 ENGINE 231A LD5 94 ENGINE 305 1 LG4 4 32 LB4 97 ENGINE 305H LG4 98 ENGINE 4 32 LET4 L 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17W 6 91 4 159 4 337