I currently own a rebuilt 355 i'm waiting to drop in my 84 z28 inplace of it's 305 H.O. (figure it will blow sooner or later) I was wonderin what it's hp should be around. It has a 600+cfm avenger on top (not sure exactly...rebuilt), spacer, edelbrock perf. rpm intake, lunati voodoo cam and lifters set (Duration IN/EX: 256/262 Duration @ .050 IN/EX: 213/219 Valve Lift IN/EX: .454"/.468" LSA / ICL: 112/108) felpro gasket set, double roller timing chain, the crank was machined at a shop for the rebuild. Heads were stock, but redone with a 3 angle valve job, lifters and springs. Just curious what it might make before it goes in.

Which stock heads ? 882 or 993 stock 350 heads?
What pistons?
That'll tell the CR you have.
That's a mild cam, a good grind, but not a high RPM style. No idea on the heads, and probably a mediocre compression ratio. Call it 275HP or so.