i have a 97 cobra and after a few months i put headers ,intake, nitrous only used 2 pounds way before the tick started , secondary delete ,after i put them on my motor starts to tick ,and then my motor starts to knock .my motor has been torn down and rebuilt , crank , lifters, vavle guides,ect . it still has a tick .i need help

 

Check your exhaust for leaks! It can make a ticking noise if not sealed properly...believe me its happening to me right now.

 

could be a rocker or a lifter