Good 400+ HP 360 build

DartVadar said

Well although a magnum would probably be the better choice I'm going to stick with an LA 360 because I already have a brand new top end. And I'm planning on replacing the pistons anyways, I just don't want to bore it out, I would prefer to keep the stock 360 bore and stroke. I'm starting to think that 400 hp without doing that may be a bit much, would around 350 be reasonable with the right tuning and cam then?

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if replacing the pistons, you might just consider getting "zero deck" pistons. what they do for you is a couple of things. by making the piston flush with the deck (where the head meets the block) you end up with just about .040 of space from your gasket between the piston and the chamber in the head. this small amount of space gives "quench" space, which helps prevent pinging / detonation. the other thing is that these type of pistons will increase your compression ratio to somewhere between 9:1 and 10:1, increasing your horsepower substantially over the stock 7.5:1 or 8:1. it would be a good match for your new top end.