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If was me, I wouldn't get the water pump housing unless they already corrected the water passages inside... make a search about.

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If was me, I wouldn't get the water pump housing unless they already corrected the water passages inside... make a search about.

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Sorry guys... I ran these critters to the max and it looks as though the problem lies with differences in pump performance and not the housings.

I used a rig with unrestricted 1-1/2" inlets and outlets, and 1" recirc lines that let the pumps flow to the physical limits of the housings. The housings seem to peak out at about 40 gallons per minute (a flow rate your vehicle will never see due to restrictions in the radiator, thermostat, engine block, hoses, etc). Trying to push the flow rates harder than this resulted in a lot of.... well for lack of a better understood term... Bucking. This information is just trivia of course, but still interesting to note.

That said... I ran the 2 pumps that I had (the stock 8 blade Mopar & 440 source HV unit) on the 3 housings that I had ( the 2 stock Mopar styles {Left & Right}, and the "restricted" 440 source unit), and in each and every case the pumps flowed the same irregardless of the housing they were mounted on. In other words, the stock Mopar pump flowed better than the 440 pump, but it still flowed the same irregardless of the housing. Changing housings had no effect on flow rates.

Note that as the rpm's increased, the 440 source pump started to catch up with the stock Mopar unit, but in the end it was still just a little behind... but not enough to care about.

Ron used a $90 Milodon HV pump on his housing which Milodon claims can flow up to 30% better than the stock unit. Unfortunately, I did not have one of these lying around to test that theory along side the other 2 pumps, so we will have to take Ron at his word when he says that the Milodon can move some water. Ron's word has always been good enough for me so I won't argue the fact.

There would appear to be a considerable difference in performance between one pump and the next, especially at the all important lower end of the rpm scale. This low rpm performance is very important because as we all know, an hot engine idling in traffic is no place for a pump with poor flow characteristics.

So... take it or leave it... that's what I got using the limited equipment at my disposal.

cheers

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This is exactly what I was gonna post a couple days ago. lol