Leaf spring theory question

I have traction for DAYS with 275’s, caltracs and 3.23 suregrip. Beer math says 340ish crank hp, 260ish rear wheels. It hooks and goes with barely a chirp just mashing the gas in D. 6 sec 0-60 without launching.

750ISH H.P. . WITH YESTERDAYS TIRES , ONLY A LEAF SPRING SUSPESION , BAD TRACK , 3646 LBS. CAR , GEARING NOT SO MUCH !-----excuse caps-