A 4000 pound truck with a 9-1 small block and a 3500 converter running 11.20s is pretty good to me. Than going though the traps at 6000 rpm.my w8 goes though at 8000 with 4.56 gears.just think if your truck weigh 3000 pounds if the rule of thumb is right that's a 10.20 truck.i think if you want to make this truck fast you can but you have a light set up for nos or turbo.are you running a nos or turbo camshaft?