Fa ow the three steps below to ut lze the 1973 spring charts 1 Se ect the model desired with the base spring weight on Chart A Z Then select options eceordingly shown on Chart E and add that weight tu the base spring weight 3 Once accumulated weight has been determined refer to chart C and se ect correct spring CHART A 1973 CORVETTE M L VZ 37 Coupe 703 5 734 0 YZ 67 Conv 699 0 742 0 CHART B 1973 CORVETTE P S F A 31 Power Windows 2 0 1 5 C 07 Auxiliary Top 4 0 23 0 C 60 Air Conditioning 38 0 9 5 L S4 454 94 0 11 5 L 82 350 Sp I I Per 18 0 3 0 M 40 T I I 400 18 5 8 5 N 40 Power Steering 13 5 0 5 Radio Radio 5 5 3 5 CHART C 1973 CORVEI IE FRONT REAR SPRUNG PART SPRUNG PART WEIGHT NUMBER WEIGHT NUMBER MA 0 768 331316 EA All 370388 MD 789 806 331317 ME 807 844 331318 MG 0ver B44 331319 E M ll 3 5 H 7 35 GM PARTS DIVISION GENERAL MOTORS CORPORATION C1 IEVROLET 14 7 000 GROUP 7 2 c REV 5 80