V81 F0 0w the three steps be 0w t0 utilize the 7973 spring charts 7 Se ect the model desired with the base spring weight on Chart A 2 Then se ect 0pti0ns according y shawn on Chart B and add that weight t0 the base spring weight 3 Once accumulated weight has been determined refer t0 chart C and se ect carrect spring CHART A 1973 CORVETTE M EL F YZ 37 Coupe 703 5 734 0 YZ 67 Conv 699 0 742 0 CHART B 1973 CORVETTE P T 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 H Per 18 0 3 0 M 40 T H 400 18 5 8 5 N 4O Power Steering 13 5 0 5 Radio Radio 5 5 3 5 CHART C 1973 CORVETTE FRONT REAR SPRUNG PART SPRUNG PART WEIGHT NUMBER WEIGHT NUMBER MA O 768 331316 EA AII 370388 Std MD 769 806 331317 ME 807 844 331318 MG 0ver 844 331319 H D EA 3832518 All 370350 Susp WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION CHEVROLET 14 i 7 000 GROUP 7 2 c REV 5 81