[blykins]

Simulations are nice, but don't rely too heavily on them. Horsepower and torque curves/peaks depend a lot on cylinder head flow as well, and until you get the heads in house and flowed (never go by advertised flow numbers), you really can't say with certainty where the numbers will fall.

That looks like the specs for a Comp Cams XE266HR. It will be a fairly mild camshaft in a 331.