Disappointed with my engine

I would be curious about the RPM's at the stripe.... Easiest thing to do is borrow a nice 850 DP from someone and give it a whirl..... The heads aren't helping and when you said **** (lol) one can only assume they are not far from stock. With that Converter it's gonna want some air pumping through the motor especially at 1500lbs.
I bet a set of TF's OOTB and you would be smiling assuming everything else is in place (ignition, headers, fuel....)

JW