V82 1974 CORVETTE F0 0w the three steps be 0w to uti 12e the 7974 spring charts 7 Se ect the model desired with the base spring weight on Chart A 2 71hen se ect options according y shown an Chart B and add that weight to the base spring weight 3 Once accumu ated weight has been determined refer to Chart C and se ect correct spring CHART A 1 974 CORVETTE Base Spring Weight Model Front Rear IY237 Coupe 704 5 733 5 IY267 Conv 701 0 740 0 CHART BI 1974 CORVETTE RPO Options Front Rear A31 Power Windows 2 0 1 5 CO7 Auxiliary Top 5 0 29 5 C60 Air Conditioning 32 5 8 0 J5O Power Brakes 4 5 0 5 LS4 454 88 5 11 0 L82 350 Sp H Per 5 0 1 5 M 40 T H 400 16 0 7 5 N 41 Power Steering 13 0 0 5 Radio Radio 3 5 3 0 CHART CZ 1974 CORVETTE Front Rear Sprung Part Sprung Part Susp Code Weight Number Code Weight Number Std MA 0 766 331316 EA All 370388 MD 767 802 3331317 ME 803 838 3131318 MG Over 833 331319 H D AA All 340519 EM All 370350 Susp VAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION CHEVROLET 14 REV 5 81 7 3 c 7 000 GROUP