1974 D300 360 fresh rebuild will not start

OK

Did you change the camshaft on this last teardown or is it the same one as before?

Also are you using the same push rods as before or are they new ones?

Same camshaft, same push rods (yes assembled back in the proper order). I bought this truck after it had been sitting for 13 years, printing on the bearings said manufacture date 1999, so it was only run for two or three years after the rebuild before it became basically yard art at a welding shop.