Anyone know the PCM 454 engine specs?

I've got the engine pulled out of my '89 Pirata to do the v drive conversion. While its out getting a new v drive oil pan, I plan on swapping out the bearings and possibly going with a new cam. Does anyone know the specs on this engine in stock form? Cam spec, compression ratio, piston flat or dished etc. I've got a set of the 036 peanut port heads with larger valves and some simple porting done to them. Reading on the various forums, it looks pretty easy to get 400hp and over 500lb torque with these heads and a small cam change.