Not that I have heard, but I am far far far from being knowledgeable about the small Ford 6. One thing that they have over the Chevy intergrated head is less of the exhaust manifold is part of the head casting. Ford had that engine out from about 1960 and a lot were used in mustangs. One other thing that hurt the Chevy was when the 2bbl head came out in 79 the carburator was set VERY lean with the first year that steel plugs on the idle mixture screws so they could not be adjusted. Maybe the extra heat caused by the lean mixture contrubitued to the cracking and burning of valves. Jay
