E-street vs Promaxx vs 440 Source

Iron heads would be fully capable of the hp your looking for. Youll just need a bigger socket when you port the heads.

Buddy had a 74 charger with a 440 that had 6 pack rods, factory crank , compression and head work done on 452's. only heavily modified cars beat him. This was the 90's. He never lost to the Buick grand nationals. Only the cars will the high octane fuels gave him a run or beat him.