Good luck,
I got a 340 bored .040 over, pretty hot cam nothing to much
9:1 comp aries forged pistons K-1 H beam rods, reused factory forged crank and balanced it proform rockers bunch of other odds and ends
Edelbrock performer heads and intake, 650 cfm edelbrock performer carb, running hipo manifolds to accurate dual exhaust and it dynoed at 400hp and 400ft lbs with open manifolds. i think everything said and done was around 5-6k from the engine builder
Maybe 450 hp if you stroke it out. But tryin to break over 400 without spendin a lot money is hard to do unless you do all the work yourself as you can tell from above
"Wow just now realized this was a old thread smh lol"