I'm in the middle of assembling an obsessively over-built street 455 (iron heads and intake, shorty headers), and here are my numbers off the top of my head:
$2100 in machining in my street 455 block and iron heads (went to big valves), that's doing nearly everything but an align hone (checked, but not needed). Blueprinted and Balanced, and I'm doing the assembly (well, they put the pistons on the rods).
About another $2000 in parts, including Forged Wiseco pistons, coated bearings, and arp fasteners, plus an IgnitionMan MSD dizzy, aluminum radiator, and John Osborn Q-Jet.
By the time I'm done, it'll prolly be right under $5K for everything. But then, I started with NO big-block parts, if you can use some of your 400 bits you'll be ahead of me.
James BPG #1604
Still own my first car: '71 LeSabre - the 2NABOT (formerly the World's 2nd Fastest 350-powered Big Buick) Now 455-powered.
'62 Ranchero w/ '68 200 Six and Column-shift 3-speed. Cruuuuuise-mobile.