Jack Z,
I just had a 351W stroker (408) built. Told the builder I wanted an engine that would easily hit 6000 rpm & 500hp. We used a steel crank, forged rods and pistons, all balanced and blueprinted. A crower hydraulic cam, roller rockers, Victor Jr heads and a stealth dual plane manifold with a custom holley 750 vac. On the engine dyno it made peak hp (470) at 5600 rpm. A little disapointing but it makes me wonder what it really takes parts and money wise ( I spent 12K on the motor) to get more out of one of these motors. Anyway a little info for comparisons sake.
Mile High Ed
