My new 347 powered by a 671!!!

Well, I ran into a problem. I switched the pulley to a 33 which is 10psi and ran 110 race fuel. I went to the track and almost crapped myself. The car launched slow, wheel spin but after the 100' mark it ran like a raped ape. I shut it down ealier due to the car next to me but I was impressed. I have a 69 camaro drag car that runs 10.50's oon motor and the Stang pulled much harder. I only ran one time b/c a rice bunner blew up and oiled the entire track...