Chevy water pump on flat tie

[G.M.]

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This is very expensive and it would be interesting to know how many gallons this pump produces in a 5 minute time period. Stock and after market 37 to 53 pumps deliver about 65 gallons each in 5 minutes and can vary a little but not much. Skips pumps with the body modifications and his turbine impeller delivers 110 gallons each in 5 minutes. Every pump is set up with exactly the same clearances and everyone is tested and delivers 110 gallons. The out put is variable depending on the ENGINE RPM's and the tests are run at 2,500 RPM's. The 3,400 RPM electric motor on his test machine went bad and was replaced by a 1,700 RPM motor and the output of the pumps dropped from 110 to 55 GPM. This also explains part of the reason these engines run hotter at idle and lower speeds. I seriously doubt the Chevy pump delivers anywhere near the 220 gallons that of the two Ford modified pumps deliver. G.M.