my stage 3 ran an 8.30 1/8th mile on drag radials with 12 psi of boost or so. you can`t just rev the motor and dump the clutch with street tires, you have to learn how to baby the clutch and launch"soft". With sticky tires you have to launch hard or you`ll bog the shit out of it. Work on your driving technique and post some times after some practice(I`m not bashing you at all, my times sucked at first). A stage 3 Z is capable of a 12 second pass.