318 head porting for the average joe

pishta said

question: If the short side radius and valve blend is so easy to do , why did Mopar not cast this into the heads from day one? C'mon, you cant tell me in the HP race of the late 60's that Chrysler didnt see this garbage as low hanging fruit for an easy casting fix? Its funny to see basic porting add 50HP and not have it realized by Mopar. Do these porting steps kill real world street RPM torque?

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Easy? bowl blend yes, SSR well, if you say so. Personally, i would never recommend it to a beginner.
To answer you question. because the man that designed the head was Performance minded.............the man the made the final design on the casting was Cost minded.

I can just here the argument. "Performance: YOU CHANGED MY DESIGN AND DESTROYED THE HEAD! Cost: At .420 lift it don't flow any different and it cost less to make. Performance: YOU LOST 20 CFM!!!! Cost: like i said, didn't change a thing. And i will be the one that gets a bonus for saving the company money.
Corporate: nothing wrong with the engine SHIP!