Ok, so I have an 84' 305 H.O. It's leaking a bit of coolant through the manifold in the front so I plan t pull the motor this weekend and replace all the gaskets and seals and pressure wash the engine bay down. I planned to pull the motor anyway to wash down the engine bay to get the car painted. I guess since it's all out and I have the manifold off I might as well put in a new cam. So I guess my question is, what is the biggest streetable cam I can use in this motor without modding the 416 heads and about how much more H.P over stock (roughley) I can acheive?


Brian