Originally Posted by 440lebaron
regular spark plug no taper, no steam holes, chamber depth measures .063
was there a calculation for surface milling for cc reduction?


.063 says to me it's been cut , I've never seen an open chamber head that shallow... is the open part of the chamber floor parallel to the deck surface ? That almost looks angle milled , which I've never heard being done to a big block wedge head?

running up my post count some more .