Quote:
Originally Posted by LancePearson
I'm a touch confused. I thought the gpm ratings of our water pumps were too much, hence the flow system and double thermostat. At speeds over 6,000 rpm it cavitates? These guys get pushed to 7000 rpms quite often. Then, what do the highly tuned 415's, 427 resleeved or turbo boosted LT5's do for water pumps and effective cooling?
Is there a solution which deals with it in modern times? These cars are all still running around if they haven't been wrapped around a tree seems to me.
Lance
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These highly tuned 415s or 427s or turbo LT5s are not running WOT/high-rpm for sustained periods, thus they don't run into cooling problems.
While I've not tested LT5 coolant pumps, I do know that one of the final validation tests was WOT fifth gear for a tank of fuel. The cooling system must have worked well enough to pass that test.
I've not experience the "cavitation problem" but I've always thought a quality, all-alumium radiator, a 20 psi system and a blocked or restricted coolant bypass would improve high rpm cooling.
Additionally, I'm not sure I understand how the pump could cavatate when the system is bypassing coolant around the radiator, but again, there are probably those here better versed in hydrodynamic subjects than I.