need to by-pass rev limiter in 86 camaro 305tpi

No offense, but WHY??? GM puts that in there for a reason. If you really want to, usually in those years of Camaro, the "rev limiter" is actually controlled by the computer. Im not exactly sure how to bypass it, but I changed my fuel injection system over to carb,(getting rid of the computer) and that eliminated it. If you do bypass it, watch your tach VERY close!!!

Good luck!