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I never know what to make of these threads.

all I can do is speak from my own personal experience.

4,000 miles on my 440 source rotating assembly with no problems. and yes, I scraped the bearings like brandon told me to.


I have a drivers exit 440 source pump housing, and did not do anything to it except bolt it on and replace the curved vane water pump with a straight vane water pump, so that I could spin the pump backwards with my custom serp. belt set-up, and have not had a single cooling problem whatsoever.

the "high volume" pump that is included with the housing uses curved vanes and I'm sure they work GREAT when spun the "right" direction. but with curved vanes, spin it backwards and it just cavitates. take a straight vane pump, and it won't matter what direction you spin it, water flow is exactly the same.


I agree these threads get old. Mine is the Cat housing identical to the Source one. Drivers side outlet, have around 4,000 or so miles on mine with a Napa water pump. Can't get it over 180 in traffic on a 100 degree day.