The cam in my 505 was 270/275 ground on a 109 center.

I just used the MP .620 as a "place holder" for the default motor. I think it would work okay for a race motor and it is certainly inexpensive, but wouldn't necessarily be ideal.

Brad, we were making around 725 hp with the Dominator carb and the 440-3 intake. There is a bunch more power to be found in the combo but we ran out of time. (or to be more precise, I ran out of money! $500 a day on the dyno starts to add up after a while)

I don't think it would be any problem to get 700 hp from a pump gas version of this motor on a dyno. But, if you combine pump gas + real world driving + full exhaust it starts to get tough. The cam choice becomes very critical.