No start on rebuilt 360LA

This is a two-way street. You say you have put a lot of time into this, but there are some pretty smart guys on this board, WHO PUT IN THEIR TIME with no expectation of payment, or even an occasional thank you. You owe it to the rest of the guys here to answer questions exactly, and not be flippant and "I've checked that a million times."

MAYBE you have checked it a million times INCORRECTLY

And by the way...........we've all made mistakes.

I once installed a great big unknown (used) solid cam in a 440.....and somehow missed setting one valve TWICE through the procedure..........AND dropped a plug that hit a header ...........and didn't notice the electrode became "pounded" shut. I spent over an hour or more back, around 1972, fighting a poor sounding engine, missing, and popping, that was "all me"