I am not a big fan of symetrical grinds in a small block Chevy un-less your exhaust to intake ratio is over 75%.
This cam will work but the XE 256 would work better.The specs. are .447/.454,duration at .050 is 212/218 on a 110 l/s.
Also a looser stall would help out a bunch say around 2,000 rpm's.