Katech offers some pretty big cams. some in the 270's. i kept a straight pattern because i am boosted. only thing with their cams is that they are like$600!

 

buddy runs a 416 ci with ported 243 heads and fast 90 with that texas giant and it is ungodly on the street. i dont know the na numbers but with a th400 and 9" it put down 770rwhp on a 200 shot i believe. car is crazy strong on the street na and sounds incredible.