As several pointed out, my intake was not clamping down due to ever so slight interference at the China walls. Instead of machining I installed a set of Cometic 0.120 thick intake gaskets which matched perfectly with my super victor intake ports, (which are a tad smaller than the ports in the head...which if matched would yield a bit more power I suppose, but I’m fine where it’s at) so far
oil hasn’t dropped a bit!
Problem now is to retune for less air.
Steve H
1764