Swapping from iron to aluminum heads
Less than 100HP is a small power gain per dollar spent. That's what I was referring to. With a good port job, that's a whole nuther ball game.
I know what you were getting at , but I'm a bit insane , I want power , good gas mileage , 12sec 1/4 Mile and keeping it old school , no fuel injection .
Even close to 100 hp gain would be fine $ wise for me , but porting is just a given , once your spending the money might as well go for it .
So far I have good power , decent gas mileage and low 13 sec 1/4 mile , figure the heads will get me into the 12 sec bracket . If I could get bigger tires without butchering the body that would help as well . Running 235-60-15 MT drag radials , still spinning .
I do a lot of highway driving city is 50 miles away , now it takes a 1/4 tank to go there and back , would like to keep it in that range