GM77 1981 AXLE IDENTIFICATION CODES A SERIES INDICATES F OfE ITRATION 2 29 RATIO 2 41 2 56 RATIO CODE RING GEAFI CODE CODE RING GEE AH 7 50 AJ 7 50 AY 7 50 AT 7 50 AZ 7 50 BY 7 50 BH 7 50 BJ 7 50 BT 7 50 BZ 7 50 2 73 RATIO 2 93 R QIQ 3 08 RATIO CODE RING GEAR CODE RINQAQEATI CODE RING GEAR AB 7 50 AG 7 50 AC 7 50 AX 7 50 AW 7 50 AV 7 50 BB 7 50 BG 7 50 BC 7 50 BX 7 50 BW 7 50 RX 7 50 3 23 R EIQ CODE RII EI E U 3 AU 7 50 BU 7 50 B SERIES INDICATES POSITRACTION 2 41 RATIO 2 56 RALQ 2 73 RATIO CODE RING GEAFI I OOE RIN QEE 5I CODE RING GEAR FA 7 50 GA 7 50 FC 7 50 GF 7 50 HA 7 50 GB 7 50 HF 7 50 LY 8 50 HB 7 50 LA 8 50 YD 8 575 LX 7 50 LZ 8 50 YU 8 2875 WE 8 875 WC 8 875 WW 8 875 WT 8 875 YE 8 875 YC 8 875 YW 8 875 YT 8 875 2 93 RATIO 3 08 RAIIQ 3 23 RATIO CODE RING GEAR CODE R I jQ E Af CODE RING GEAR FB 7 50 LE 8 50 LF 8 50 GG 7 50 LV 8 50 LU 8 50 LW 8 50 WJ 8 875 WK 8 875 WY 8 875 WY 8 875 WZ 8 875 YJ 8 875 YK 8 875 YY 8 875 YZ 8 875 j 1987 GENERAL MOTORS SERVICE PARTS 0PERATIONS PONTIAC 21 1 EELZI