stroker 318

I ported and gasket matched a set of 318 heads that I had the larger 1.88 intake and 1.60 ex valves put in. I realize these may not be the best heads for a stroker engine, but I was wondering if anyone knows there power potential. The engine is bored .40 with a 4 inch scat crank, rods, and forged icon dished pisons. Any help would be appreciated.