Originally Posted by ap72
You're going to want more compression, at least 10:1 if you have a "big lumpy cam". 6500 RPM is EASY for just about any sbc as long as its well balanced and assembled. Your VALVETRAIN is critical though, if you're not worried about power go with a very mild solid cam, with beehive springs and you should be able to run stock rockers and valves.
Naturally aspirated, I agree you need more static compression ratio with a big lumpy cam. With a blower though, you need to reduce the SCR to prevent detonation and still run the big lumpy cam. Here's a recommendation from Blower Drive Service.....
Blower Drive Service: We Deliver Horse Power! - Blower Drive Systems, Blower Kits, Blower Cams, Custom Carb Service