Horsepower limit for out of the box Edelbrock RPM heads

You may still be in trouble LOL..... The Cleveland heads flowed better than the SBM heads out of the factory, even the 2 bbl versions... at least in the intake side.... the exhaust had some 'issues'. And TF shows both a 2 BBL based and a larger head for the Clevelands. The 2 BBL based TF head (195 cc ports) is 289 cfm at .500"lift and 313 cfm at .600" lift, but the larger 225 cc intake port head is beyond it..... 313 cfm at .500" lift and 336 cfm at .600" lift.