Originally Posted by superstreeter
I ran a set of 781 steel heads, with larger valves and some porting, then upgraded to the afr 305s,,,the car ran .15 quicker, pretty disappointing,,so don`t get your hopes up,,I think your going to need an extra 130 hp to get that goal, I have found that once you get into the 10s - 1/4 mile,,it takes about 20 hp to get an extra 10th
superstreeter we are think about changing heads on my brothers truck how much HP do we need to shave 3/10th.