Only 460hp
I don't "need" more hp but want it.
boy I remember thinking that. Now I'm 600ish and would like more. I don't need it, but I would like it! It never ends, brother.
I'm sure someone probably already suggested More head, more intake, more duration, and a little more compression won't hurt.
I agree with others, for what it is, it's about what you'd expect.
I have extensive experience with disappointment at the dyno and I learned 1 BIG thing. You ain't going nowhere without GREAT heads.
If ya have a week to spare read my old thread "Missed on this combo". It's all in the heads!