FRAMES SPRINGS SHOCKS BUMPERS L266 1977 C BODY 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 Monet u I wizicm CV37 98 Coupe 1092 1092 913 CV69 98 Luxury Sedan 1094 1094 937 CX37 98 Regency Coupe 1100 1100 918 CX69 98 Regency Sedan 1105 1105 946 CHART B t FRONT REAR PRODUCTION OPTION WEIGHT WEIGHT AG1 AG2 Electric 6 Way Seat 55 45 Seat 5 5 A42 Electric 6 Way Seat Bench Seat Exc CX00 4 4 CA1 CF5 Electric Sun Roof 8 13 C60 C65 Air Conditioning 49 O l 19 Air Injection 8 O Radio Any Option 5 2 Y72 Heavy Duty Cooling 5 O L80 403 Engine 11 0 TP1 Battery 5 O K97 H D Generator 4 O B36 Trunk l lat O 6 CHART C STANDARD SUSPENSION FRONT WEIGHT SPRING REAR WEIGHT SPRING GR78 TIRE PART NO GR78 TIRE PART NO 0 995 370976 996 1050 370978 0 961 482064 1051 1105 370980 962 1053 482066 1106 1160 370982 1054 over 482068 1161 over 370964 CHART C HEAVY DUTY SUSPENSION FRONT WEIGHT SPRING REAR WEIGHT SPRING A GR78 TIRE PART NO GR78 TIRE PART NO 0 964 378541 0 914 485077 965 1041 378501 915 981 1042 1120 378503 982 1026 482075 1121 over 378505 1027 over 482075 1987 GENERAL MOTORS SERVICE PARTS 0PERATIONS 0LDSMOBILE 31 7 OOO GROUP 7 14 C REV 7 87