You asked for it here is the complete rotating assembly for a 496 cid. This is an internal balanced rotating assembly. Scat 1-91605BI BB Chevy 496 Street And Strip Performance Balanced Rotating Assembly - 10.5:1 Icon Dome Pistons - BB Chevy 496 Kits - Rotating Assemblies - New | CNC Motorsports | Car Parts | Truck Parts | Competition Engines
. Here is the best Hydraulic Roller camshaft kit to complete the top end. http://www.summitracing.com/parts/cc...make/chevrolet
Here is the Oval port ProComp Bare heads that BOBCRMAN recommended. http://www.ebay.com/itm/BIG-BLOCK-BB...item51a0ac45fa
Just have your machanist install Manley Valves and COMP Engineering parts and the springs that are in your cam kit. I would top it off with an Edelbrock Performer RPM oval port intake and a 850 vacuum secondaries carburetor.