it ran fine until i got the head rebuilt and installed a titan 1.4 headgasket and crower stage two cam i have been trying alot of stuff i fianlyy got adjustable cam gears that helped a crap load but now it had a dead spot when u first hit the gas and runs a little rough and stalls everytime u let off the gas there is a kinda hissing sound coming from behind the altinater in that area soundslike a vac leak i need some suggestion on y it it has a dead spot and stalls thanks i really appreciate any help i get