00'TwistedLS1

So my new cam set up was completed about a month ago and has been causing nothing but trouble. Most recently it has lost all of its *** and surges more than normal. Once it gets into its powerband all it does is spits and falls on its face. I figured it was my fuel pump but my fuel pressure is at 60psi like it usually is... If someone could shed some light on me I would greatly appreciate it and thanks for your time