Ok boys, you wanna get crazy, here we go.
Start with someone's old worn out .030" or .040" '67 or '68 "juice" side oiler block (for the Jesel shaft rocker oiling)
bore it to 4.30 (which still shouldn't hit water and should keep the block strong) and install .125" ductile iron diesel cylinder sleeves.
Finish bore the block to 4.180
De-stroke an iron 352 crank to 3.35" with 2.100" rod journals
The iron 352 crank weighs much less than a steel crank and is more than strong enough at that stroke.
Custom 6.95" Oliver billet rods with large journal small block Chevy journal size
CP pistons 14 to 1 compression
It would be about 366ci
Keith Craft or Kuntz & Co Edelbrock heads with relocated intake and exhaust ports, 2.15 intake and 1.65 titanium exhaust valves
with about a 60cc (or smaller) combustion chamber. Intake flow around 360 to 370 cfm and exhaust flow around 250 to 260 cfm @ .750" lift
Jesel or T&D valvetrain
Roller cam 278 deg. intake 284 deg. exh. @.050", .780" lift 105 deg. lobe centers. Jesel roller lifters and Manton tapered pushrods.
Danny Bee cam belt drive
Edelbrock Victor intake with a 950 Holley HP 4150 carb
Dry-sump oiling system.
Should make about 650 to 675 hp (or more) at 9500 to 9800 rpm
Drop the compression and cam size for limited street use and make 550 to 575 hp at 8200 to 8500 rpm.
Get ready to change a lot of valve springs!
Someone finance it, I'll be happy to build it
--Mike