My Z'd, C10 framed, LS powered,55 1st series.
What I believe to be/was told is a 706 headead 5.3
It was DBW but I converted it to DBC. Its's got a BeCool radiator, 160 deg. therm, an intake I made using parts from siliconeintakes.com, 2010 Camaro exh. manifolds that I took the heat shields off of and smoothed down before painting them with VHT header paint, no cats, no evap, a 3" Magnaflow, elec. fan, removed a/c compressor, NGK TR55's and a custom tune. The 4l60e has some bolt ons as well.
Sorry for the bad quality engine pics, it was night time.