I am going to cut to the chase here!!! Please take this with a grain of salt. The 302 331 347 engines are good and i have been messing with them for years. Bottom line here is simple. THE HEADS DON'T FLOW. In their best day they can flow 200-210 max. And with those numbers the 400 HP deal is a NO NO. With BOOST you can accomplish 400-420 MAX. But that is it. Basically that SUCKS for the money it will cost. An NA 302 331 347 is best at around 350HP. And if that is your goal fine. But their are easier ways and better engines to do it with. Basically the 302 is a BOAT ANCHOR. But this is a ford site and i will most likely get pounded for saying this. THE 302 IS A DOG PERIOD!!!
I spend money I don't have, To build cars I don't need, To impress people I don't know
HAVE YOU DRIVEN A FORD LATELY!!