my 383 stroker is essentially a .010 under 440 in a low deck block.

here's my parts list:

440 stroke crank
440 rods
short pistons to make it fit the low deck, flat tops with valve reliefs

eddy 84 cc heads for 10.5:1 compression

comp XE-275-HL hydro flat tappet cam--advertised 275 duration at .525 lift, but duration at .050 lift is 235 degrees

performer RPM intake, holly 750HP carb (no choke)

headers

it made 505hp on the engine dyno.

with stock iron heads, you'd be just shy of 500 hp with this combo, but some light port work could get you there.

everything runs on premium pump gas.