for a while i have been thinking about buying LT4 hotcam for my truck. i knew i had to change out my springs and what not but then i found out that i would have to change the studs in my heads also. not the ? is what kinda performance could i/ would i get out of a ZZ4 cam. thats the biggest cam i can use w/o having to change anything to my heads. would i have a mild lope, extreme lope, no lope, what kinda power increase etc.

 

a better question is what cam can i get w/o having to change the studs in my heads.....springs and rods i dont mind but studs i rather not.