FRAMES SPR NGS SHOCKS BUMPERS C331 1978 X CAR Follow the steps below to utilize Service Spring Charts Obtain GAWRF Frt or GAWRR Rear weight from sticker on left cloor Use kilogram kg values onlyf il Select chan to be used determined by model and engine or suspension El Locate the GAWRF or GAWRR weight within the appropriate range under the proper tire column Use indicated spring part number If car is equipped with bucket seats subtract 31 kg from GAWRF wt and 37 kg from GAWRR wt Use these corrected values in Step 3 X W V 6 ENGINES W N41 EXC F40 OR F41 SUSPENSION FRONT GAWRF RANGE REAR GAWRR RANGE SPRING SPRING FR78 14 E78 14 PART FR78 14 E78 14 PART TIRE TIRE NUMBER TIRE TIRE NUMBER Over 1156 Over 1152 6262428 Over 1166 Over 1191 378553 1094 1156 1121 1152 3988113 0 1166 0 1191 362105 1064 1093 1086 1120 3988111 1001 1063 1019 1085 354161 968 1000 987 1018 3996362 0 967 0 986 346996 X W V 8 EXCEPT F40 OR F41 SUSPENSION FRONT GAWRF RANGE REAR GAWRR RANGE SPRING SPRING FR78 14 E78 14 PART FR78 14 E78 14 PART TIRE TIRE NUMBER TIRE TIRE NUMBER Over 1156 Over 1152 6262428 Over 1258 Over 1286 362109 1094 1156 1121 1152 3988113 1167 1258 1192 1286 362102 1064 1093 1086 1120 3988111 0 1166 0 1191 362105 1001 1063 1019 1085 354161 968 1000 987 1018 3996362 0 967 0 986 346996 X WN 6 ENGINE WIO N41 EXC F40 OR F41 SUSPENSION FRONT GAWRF RANGE REAR GAWRR RANGE SPRING SPRING E78 14 PART E78 14 PART TIRE NUMBER TIRE NUMBER Over 1138 6262428 Over 1191 378553 1102 1138 6262426 0 1191 362105 1026 1101 6262425 0 1026 334445 X WlF40 OR F41 SUSPENSION FRONT GAWRF RANGE REAR GAWRR RANGE SPRING SPRING FR78 14 E78 14 PART FR78 14 E78 14 PART TIRE TIRE NUMBER TIRE TIRE NUMBER Over 1111 Over 1138 6262428 Over 1156 Over 1180 362102 1076 1111 1102 1138 6262426 0 1156 O 1180 362107 1001 1075 1027 1101 6262425 0 1000 0 1026 334445 WAREHOUSlI lG AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION CHEVROLET 10 REV 5 81 7 31 c 7 000 GROUP