Mystery Crank ( Arrived )

So a .030 over 318 destoked to 312 should rev to the moon with the right cam and head work.
Remember Gilden never let interviewers look at his heads. But he sure was fast with that Arrow.
If your builder cant figure this out... then he isnt a builder.
Thanks just curious about the balance of Crank for ME to know not engine builder !!
Balancing is done off site from machine shop , I knew the 340 and 318 were balanced differently and this Crank started life as a normal steel LA crank thanks again Chris.