3" ?

[screamin86]

maybe in the 350-400 range? i could be way off but its a guess the setup i had on my old truck thats in my sig was an estimate of 300hp there is a member here cant think of his screen name right off though that had a similar build as mine but with vortec heads though and made 390ish hp at the flywheel on an engine dyno. maybe he will chime in. i dunno much about your heads and havent seen alot of builds with that cam.

[The dream]

At least i have an idea now. I was really confused about that, because when i was picking parts for the build theres many parts that are HP rated. Luckily most of them are in the range you are talking about, other parts are 500+HP that i knew i wasn't going to reach.
Down the road i will dyno it, and share the info.