Hope I didn't throw too much at you on the phone. I know there is a lot to take in when it comes to the 5.4/4.6. Hope it helped at least a little! LOL
Dude you don't understand how much you helped me. I love talking about trucks and motors. Also, the would a forged non pi 5.4 be a better starting point with my PI heads on it?
what? the short block doesnt matter. a forged 5.4 SB is a forged 5.4 SB. PI heads are better, hands down.
ok, after re reading the previous statement, i think i know what you are talking about. yes, the compression ratio will be different. it will also be pretty high. i would venture to guess higher than 10:1 CR. you dont want the CR to be very high with boost.
Minimal differences won't matter for your build. I would pick up whatever you can get at a better price.