Nice +.030/.040/.060 440 with aluminum heads (Edelbrock) CNC ported if you can afford it!! Edelbrock 440 RPM Performer intake, 1 3/4 or 1 7/8 headers (maybe 2 " depending on where the build goes), 10.5 to 1 (9 to one with iron heads) 750 vac or DP holley (900 or 1000 if build goes bigger hp)will work quite nicely and a 240/248 @ .050 ish cam advanced a bit extra and a 3000 stall 4000 if you pass 250/258 @ .050. Easy to make 475 to 575 and good torque!!

But and a big "BUT" by the time you turn' polish and balance your crank, rebuild or better after market rods, new pistons, rings, bearings a stoker hit will give you 493 to 512 cubes for the same price no hassle.
"THERE IS NO REPLACEMENT FOR CUBIC IN DISPLACEMENT"

Then up the cam to 250/258 ish @ .050 or 260/268 for more as bigger motors need bigger cams. and your easy hp goes to an 550 to 650 with much more torque at the same time!!!