Erosion of aluminium alloy engine components exposed to coolant is generally more complex than 'cavitation'.
Coolant pressure was originally raised in aero-engines due to both atmospheric pressure dropping at altitude,
& when use of high temp glycol-based coolant proved problematic.
Emissions controls favour higher coolant temps, but for best power out-put some G.P. mills
operated at low coolant temperatures, ~1/2 the boiling point of water at sea level..
Cavitation damage to austenitic steel propellers of nuclear subs cruising the high pressure ocean depths is
a major problem.
Not many 4.5 litre hemi Daimler mills were built - largely due to the fact that Jaguar bought Daimler from BSA,
& were embarrassed by the 4.5 V8's superiority to their heavy old long-stroke six..