Here is a copy and paste from Wikepedia about Zora ARkus DUNtov.
You can see the name of the heads in his name.
Sal
Ardun[edit]
Settled in Manhattan, the two brothers set up
Ardun (derived from Arkus and Duntov) which supplied parts to the military and manufactured aluminum overhead valve, hemispherical combustion chamber heads for the
Flathead Ford V8 engine. The purpose of the overhead valve design (already common with in-line 6 cylinder engines of that era), was to cure the persistent overheating of the valve-in-block flathead designs. The Ford flat-head V-8 'siamesed' the two center exhaust ports into a single tube, passing the hot gasses between those two cylinders (a massive heat transfer to coolant which was not present in overhead valve designs). The Ardun heads (designed with overhead valves, now presenting no over-heating problems) allowed dramatic increases in power output from the Ford V8—to over 300
horsepower. Ardun grew into a 300 employee engineering company with a name as revered as
Offenhauser, but the company later went out of business after some questionable financial decisions by a partner that Zora and Yura had taken on.
[1] Arkus-Duntov attempted to qualify a
Talbot-Lago for the
Indianapolis 500 in
1946 and
1947. He failed to make the race both years.
[3]
Later, Zora left America for England to do development work on the
Allard sports car, co-driving it at the
24 Hours of Le Mans in
1952 and in
1953.
[1]
Driving an 1100 cc
Porsche 550 RS Spyder, he also won class victories in
1954 Le Mans and
1955 Le Mans.
[1]
