I had the same problem, I changed my hydroboost unit and all my problems went away. Also, check the magnet in the pump, I also had quite a bit of metal in the system as well. I replaced the Hydroboost and flushed the pump and the lines and I have been great ever since.
I have this cam in my LS1 and it is awesome. great power and it turns on at 1200 RPM
It is a Howards Billet shaft
PN:190315-14
IN Exh Duration @.050" Lift IN Exh Lobe Seperation
260 264 210 214 .595...
I am running this Howards Billet cam shaft in my 5.7 LS:
Part Number: 190315-14 Duration 260 / 264 Lift .595 / .598 Lobe separation 114
My engine builder says the Lobe separation is the key to building big power down low. now my motor does have a little extra compression. With this cam the...