Ok I'll make sure to use the BB again for initial timing. My manual, and other places, say to get the motor to tdc and use the u/c mark on the flywheel, then drop the distributor in correct orientation.
#1 cylinder TDC (U/C mark on the flywheel) on a compression/firing stroke, as described in the Shop Manual.
http://chevy.oldcarmanualproject.com/shop/1954truck/54ctsm1232.htmlHow did you determine #1 on firing/compression stroke?
(the crankshaft rotates twice for each firing stroke -
you have a 50/50 chance the U/C mark is a #1 firing stroke ).