Can anyone tell me how much et I would see going from a TCI 4000 stall 10" to a T/A 5400 stall 8"? Motor combo is real simple. 344 4.070x3.31" stroke, 12:1 TRW pistons, M1 single plane, W2 heads worked over, .590 Solid FT purple cam, aluminum rods, 850 holley on E85, 1 7/8" headers, 2750 lbs...