To answer a few questions.
The flash stall is 5200.
Valve lash is .020 cold.
Initial timing was 27idle 35 total. Tried 37 total today,it picked up.
Tried leaving off idle ...leaves harder.
Up on convertor [footbrake] 2500 and 3500 no big difference. Leaves softer.
Put a known good carb on today and it picked up everywhere, but 60 ft.
Went to Keystone for tnt. Typically it's slower there than Mason Dixon [elevation] but I was 3/10ths quicker today. I had the best 60 ft 1.51 leaving off idle, 17lbs air. The car really responded to 37 degrees total timing and the carb swap. Picked up 4 mph from the first run. 119 to 123.7. A friend who was there said there's about 8 in separation on the rear suspension.
We did a compression check shortly after the engine was put together all the cylinders were around 205.