Disappointed in my 383 on the Dyno

Nice street cam but that is not going to give you the panty dropping power you are after.
What made you decide you need 400 plus hp at the rear wheels? Really, i think 330 at the rear wheels should be a tire fryer! Get a cam designed for the street with high lift and short duration and you'll have a ball...unless it's a quarter mile car. What are your gears and tire size?

want to be able to take to the track once I relocate the springs in the rear and get some wider tires. It’s got 3.91 gears