I think you have a solid 10sec. car. I built a similar combo in that it had a solid lift flat tappet cam and it ran 10:60s in a 3200lbs camaro with a powerglide and pump gas! It also had a nice set of ported track 1 brodix heads. It has been one of my favorite motors I have built. With that turbl 350 first gear, its going to rip the tires off if its tuned right. Make sure you have the fuel flow you need and about 36-38 degrees timing at 3000 rpm max!
CC