We probably have similar builds and I am not impressed with my car either.. While it sounds like my car runs better than yours, still not very impressive in the "seat of the pants" test.. I think biggest problem is my 2.94 rear gears, as I just cruise the car, not interested in racing it...

I did not check cam gearing or if my original damper timing mark has slipped, so I can't complain, just giving you some feedback..
Stock 040 over 440
Original carb, exhausts, 915 heads, forged pistons, heads milled to appx 9.5-1 ( CC,d) 375 hp stock ( new) cam,..