FRAMES SPRlNGS SHOCKS BUMPERS L264 1977 B BODY COUPES SEDANS SPRING CHART Follow the four steps below to utilize the 1977 Spring Chart 1 Select the Model desired with the weight on Chart A 2 Then select Options accordingly shown on Chart B and add that weight to the Chart A weight 3 Once accumulated weight has been determined refer to Charts C 4 Select the required spring opposite the total accumulated weight in Chart C CHART A FRONT WEIGHT REAR MODEL LH RH WEIGHT BL37 Delta 88 Coupe 940 940 873 BL69 Delta 88 Sedan 948 948 330 BN37 Delta 88 Royale Coupe 943 943 875 BN69 Delta 88 Royale Sedan 955 955 886 CHART B FRONT REAR PRODUCTION OPTION WEIGHT WEIGHT AG1lAG2 A42 Electric Seat 5 5 AU3 Electric Door Lock 2 2 CAI CF5 Electric Sun Roof 7 12 C60lC65 Air Conditioning With V6 Engine 38 0 C60 C65 Air Conditioning With V8 Engine 46 0 K19 Air Injection 8 0 A31 Electric Windows 5 5 B36 Trunk Mat 0 6 Radio Any Option 5 2 Y72 Heavy Duty Cooling Without Air Cond 4 0 Y72 Heavy Duty Cooling With Air Condit 10 0 LV8 Engine 67 0 L34 Engine Except BN69 Model 70 0 L34 Engine BN69 Model Only 50 0 L27 Engine 47 0 L80 Engine 102 28 TP1 Battery 5 0 K97 H D Generator 4 O CHART C STANDARD SUSPENSION FRONT WEIGHT SPRING REAR WEIGHT SPRING FR78 TIRE PART NO FR78 TIRE PART NO 0 968 370976 969 1024 370978 0 917 482064 1025 1078 370980 918 1010 482066 1079 1133 370982 1011 over 482068 1134 over 370964 CHART C HEAVY DUTY SUSPENSION FRONT WEIGHT SPRING REAR WEIGHT SPRING FR78 TIRE PART NO FR78 TIRE PART NO 0 925 378541 0 865 485077 926 1005 378501 866 932 1006 1085 378503 933 977 482075 1086 over 378505 978 over 482075 1987 GENERAL MOTORS SERVICE PARTS OPERATIONS 0LDSMOBILE 31 7 OOO GROUP 7 12 C REV 7 87