Hydraulic Roller Cam
Isky Retro Fit Hydraulic Roller camshaft and lifters, 0.485/0.505 inch lift (intake/exhaust), 217/225 degrees duration at 0.050, ground with a 108-degree LSA. $835
A 10.5:1-compression 350 small-block with 64cc Vortec heads, an Edelbrock Performer RPM intake, 650-cfm Holley carb, and an Isky hydraulic flat-tappet cam with 0.465 inch lift (intake and exhaust), 221 degrees duration at 0.050, and a 108-degree LSA. Power measured at the flywheel.
The specs on these two cams are very similar, but the advantages of running a hydraulic roller cam--specifically the increase in area under the curve and the reduction of frictional losses--are clearly demonstrated.
Small-Block Cylinder Heads
Brodix IK 180 aluminum cylinder heads, which have 180cc intake runners, 64cc chambers, and 2.02/1.60-inch valves. $1,014/pair
A 10.5:1, 355ci small-block with a Comp Cams XE268 cam (0.477/0.480 inch lift intake/exhaust, 224/230 degrees duration at 0.050, 110-degree LSA), ported GM double-hump iron heads, an Edelbrock Performer RPM intake, and a 750-cfm Quick Fuel double-pumper carburetor. Power measured at the flywheel.
The "IK" stands for Iron Killer, and that's exactly what happened here. You can spend your money on porting a set of old heads or spend it on a set of new heads that produces way more power.