PUZZLER!!! My new motors a dog! what did I miss?

Where are the pistons? With that combo, the pistons need to be pretty much at zero deck, or even out of the hole a hair, depending on the head gaskets. That cam and those heads would work better together if you had left the 1.88 intake valves in it. Those open chambers, big(ish) valves, relatively mild cam, and carb are just not a good match for a combo, unless the heads were shaved and pistons are zero'd. Not sure about the degreeing of the cam, but I think it would be rather anemic even if it is degreed properly. Might try backing the timing off about 3 or 4 degrees, too. I doubt it will do much, if anything, though