402, IM NEW TO THIS! help please :)

Flyboy, it is so much easier to build that 318 that you already have, instead of using a big block chevy motor and transmission...it would be a crazy amount of work for someone who doesn't know what he is getting into...you would have to make engine mounts, tranny mounts, cut the floor for the trany to fit, make custom headers, all kinds of little stuff..stay with the 318, like was said, they could be built for 350 HP relatively easy..thats plenty of power!