Well we've heard that Stewart pumps seem to be going down in quality but what about some of the others? Is anyone using any of the following and if so what results? Milodon, Edelbrock, Flow Kooler and Weiand. I'm considering one for the "396" in my cpe.

HI, I`M SURE EVERYONES GONNA HAVE THE BETTER WATERPUMP, BUT I HAVE BEEN USING THE SAME EDELBROCK ALUMINUM WATERPUMP FOR AROUND 8 YEARS, NOT ONE PROBLEM. SAYS ALOT TO ME ANYWAY.

Forgot to say that I'm interested in feedback regarding the high volume pumps

I have never had any trouble with GM performance (O.E.M) water pumps. I'v used them on my DZ302/383 stroker/502. They maybe a little pricey, but worth the piece of mind!

I am not so sure that the Stewart pumps are going anywhere with regards to quality. I have heard of so many success stories with the Stewart's pumps that I would put one on my WIFE'S car.

The pumps that I have tested are the Edelbrock, Stewart, TuffStuff and all are hi output and qualatative products. We designed our Concept One pulleys and Brackets around the Edelbrock and TuffStuff lines. TuffStuff is the better value in my opinion, but you can't beat the Edel for quality and service either. TuffStuff uses the flimsy cardboard looking and feeling gaskets that I have warned against that turn to gel when used with certain additives. I have convinced the factory to change to the Felpro type of gaskets. If you buy a TuffStuff....make sure you do not have these cardboard gaskets and go and buy the Felpro ones instead. There might be stock left.

Edelbrock is pricey but great stuff.

I don't have anything to really say bad about the pumps that come on crate motors, but not good either. They work just fine and are reliable, but the long versions that we tested did not put out the pressure and volume these other ones did. I think that they would do in most popular stock/street applications, however if you are looking for more volume....consider a quality aftermarket supplier.
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Steve Jack
SOUTHEASTERN GOODGUYS REP

Steve, read in a recent mag ( think it was popular hotrodding) and also think it was regarding a BIG block shoot out that one of the engine castings was rough enough that the water pump needed port matching for better water flow...Ever run into this before?
The 440 Mopar kicked hiney and it was Dick Landy hissef that put it together! I think after a jet change on the Demon 850, it pulled something like 680+ HP!!! The 460 Ford was last and the Chevy 454 pulled something around 648 I think... got to read the story...Fred P

buy cheap, get cheap...
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Fred P.

Yep......I have heard of it, but it is rare. The casting materials at the water pump mounting surface to the block was so rough and left materials in the water stream itself or was slightly smaller than the pump and as a result water flow is impeded. On top of that, the obstruction can lead to a build up of low pressure behind it causing air to form and that's a no-no big time. Obviously at 680hp they need all the water flow they can get.
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Steve Jack
SOUTHEASTERN GOODGUYS REP

Hi guys,

Had to finally jump in on this one. I had an polished Edelbrock high output pump on my last 34Ford. Put the new polished pump on to help cool things down. Took off for a 4 hour trip to a Goodguys event and things went well, until we stopped for fuel the first time and the motor boiled over in the gas station. Humm? Never had this happen with the previous stock pump. Got to the show and didn't drive it much other to and from the motel. When it was running sometimes it had a hard knock that sounded like the old steam radiators in the old houses. Didn't think to much at the time and drove home the 4 hour trip and put some water in when we gassed up each time. Now once we get home it was running rough and I noticed the headers were now blue on the passenger side (the side you couldn't see when the hood was opened) and the paint burned on the head above the header. Now I figured out I had a couple of burnt valves. After much head scratching I took the water pump and hooked a drill up to it and put water in the hose end. To my amazement the port side that suppose to pump water to the passenger side was solid down inside and wouldn't flow any water. Some how the casting never got cleaned out of that side. I called Edelbrock and they said to send the pump back and they would check it out. In the mean time I had to redo the head and replace 4 valves. They sent me a new pump for the defective one but I was still out the cost of the repair to the head so I wrote them a kind letter telling them about what had happened. About two weeks later I got a call from a guy and he said he was Vic Edelbrock and he heard that I had a problem with one of their pumps. He said they had never had one like that before and he was sending it down to R&D to cut it apart and see what might have caused the problem. He also said to send him the bills for what it cost to redo the head and he would send me a check. I was surprised first to get a call from the man himself and them to offer to pay for the repairs.I did get a check for the parts and machine work. So that's my water pump story. Oh by the way I so have a new Stewart on the motor of my new 34 that I did check for flow out of both ports. It did end well but was a real headache tying to figure out the problem. Sorry this was so long but now you know The Rest of the Story

bob
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If it was easy everybody would have one.