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Try adjusting the proportioning valve until the back tires lock up and then set it so it just won't and see how you like that with the present parts That is a big car Stay safe



No matter where I have the prop valve, neither front or rear locks.

72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.