1978 CHEVROLET AXLE IDENTIFICATION CODES Indicates Limited Slip A SERIES ASSEMBLY CODES 2 29 RATIO 2 41 RATIO 2 56 RATIO 2 73 RATIO 2 93 RATIO RING RING RING RING RING GEAR GEAR GEAR GEAR GEAR RA 7I z AZ 7 Iz RC 7 lz A 7 AG 7 Iz BH 7 lz BZ 7 l AA 7 a EX 7 z BG 7 BA 7 z RD 7 z RX 7 AE 7 BR 7 z B SERIES ASSEMBLY CODES 2 41 RATIO 2 55 RATIO 2 73 RATIO 3 08 RATIO RING RING RING RING GEAR GEAR GEAR GEAR GF 7 YD 8 NC 9 NF 8 NR 8 YU 8 LC 8 LF 8 LA 8 V r 8 VV 8 F SERIES ASSEMBLY CODES I 2 41 RATIO 2 73 RATIO 3 08 RATIO 3 42 RATIO RING RING RING RING GEAR GEAR GEAR GEAR PS 8 PU 8 PW 8 PY 8 PJ 8 PA 8 A PC 8 PE 8 3 73 RATIO RING I GEAR PZ V 8 PF 8 H SERIES ASSEMBLY CODES 2 29 RATIO 2 56 RA IO 2 73 RATIO 2 93 RATIO RING RING RING 1 RING GEAR T GEAR GEAR GEAR EA 1 asv M Ec 7 Ebb 1 EZ 7 EV 7 EX 7 EW 7 3 08 RATIO 3 23 RATIQ RING RING GEAR GEAR EJ 7 EE 7 A ER 7 EV V 7 V GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET I0 j 5 6 A