1.60 short times with a 8.0" tires and spinning?
Like someone stated, they were a crutch to help and problem else where. Springs, Shocks or whatever. I run a 9.0" tire with springs. I have no snubber or bars. I foot brake the car with a 727 and 60's are always one the money at any track. The best 60 foot is a 1.42
Now I would work on getting the car to hook with out the slapper bars. After the car is working "right" with out the bars, and see what happens then.