barnett468

nope, the one for the 65 is thinner . . the exact one i posted is correct for the 66 with the back plate . . no idea if the plate is included . . call summit or flowkooler to see.

they way the list it is stupid, dont pay attention to it.

all 1681 pumps are the same except for the finish.

http://www.flowkoolerwaterpumps.com/...124/index.html
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Gun Jam

I considered the electric setups they look awesome...Good to know they are reliable too. The cost isn't that bad but dont feel like spending a week at this time to get it properly set up. maybe in the future 8 amps at 13v is 104w or .14hp...Thats less than a 1/4 hp at any rpm to run that pump....Thats pretty damn cool....Maybe I'll look into it more ...I bet it takes way more than 1/4 HP to run a mechanical pump...Anyone have a real number?

So its either that or the flowkooler...

barnett468

depends on the fan and also whether it is fixed or on a clutch, but i think the number was around 7 hp.

there was also a calc like you did to run an electric fan . . a good electric will draw around 20 - 30 amps.

if you have a dual pulley, you can slow both the fan speed and water pump speed down by running a factory single pulley . . they are larger.
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tx65coupe

I always get the new ones that Oreilly's or Advance has. I currently have a GMB on the 65. I have a 5.0 though, so that changes things a bit.

The F150 has a Tough One from Advance on the truck. I have no idea who makes this unit. I was going to guess Airtex.


They usually last a while, but don't really last as long as they should or as long as an OEM unit.

These are also aluminum, but are reverse rotation. Maybe something similar is available in standard rotation.

I've completely given up on remanufactured water pumps years ago.

I have considered the performance offerings from Edelbrock and Flowcooler a few times, but the price is too steep for me.

tx65coupe

There is absolutely no way I would consider an electric water pump. I've seen them on some drag type builds, but never on street cars. Thats probably for a reason.

I can't believe it takes that much HP to run a mechanical pump.

Starfury

I believe I have the high volume unit, but I can't remember for sure. I do have one bolt that needed to be a bit longer than what came in my ARP kit, but I believe that had more to do with my thick cast iron accessory brackets than the WP itself.

It does take a bit of power to run a mechanical fan, especially without a clutch.

67mustang302

The reason is mostly that people don't like to change the way things are done, and shy away from something different or new. Mechanical is tried and true, and everyone used them before electric water pumps existed...electric comes along and everyone says "no one uses an electric on the street, so I won't either because there must be a reason." The reason is that everyone used mechanical because that's all there was, and electric comes along and no one switched.

A good electric pump will run on the street for a loooong time, and can last longer than a mechanical because there's no side load being put on a shaft/bearing, so you avoid a large point of mechanical failure. You have to get a good pump though, like a Meziere....and they're expensive. They rate them at 3,000+ hours of life though, so if you commute and drive around a city let's say at an average speed of 40mph....that's a minimum of 120,000 miles. That's minimum life expectancy, and if you commute on the highway a lot like I do where your average speed between highway and city driving works out to 60mph...that's 180,000 miles. In reality, I've seen some info that when Meziere tests their pumps, they frequently get 5,000hrs or more out of them, and the 3k hrs is just a guaranteed minimum; so at 5k hrs and 40mph your pump life is 200,000 miles, at 60mph it's 300,000 miles. That's a long, long time for a water pump to last.

My Meziere has been on the car for years, and still runs like it's brand new. I suspect it will last for years more...but it's also a $500 55gpm pump, so it's a matter of getting what you pay for. The initial buy in cost is high, plus you need to spend a bit of money on wiring up a relay as well as having an alternator that can handle the load (over 10amps constant draw just from the pump). As is typical of all things electric, it takes less power to make the electricity in the alternator to run the pump, than to run it mechanically; so it's more efficient and more reliable, and can eliminate a pulley if that's beneficial (they also sell versions with an idler pulley in place if you need it for belt routing). It's also large though, and I'm limited to low profile fans since the pump sticks out quite a bit. They also sell the motors separately if you need to replace one and the pump itself is fine.

A few factory cars are starting to go to electric water pumps, probably a result of the older "I ain't usin' me no durned electricemec pumpoolie doohickey" engineers retiring and newer engineers replacing them. You mostly see them on a smaller number of higher end cars though, some of the Audis and Mercedes models; but it is starting to becoming more common in other cars as well. With more cars running turbos and pushing for really high efficiency, an electric water pump can be made reasonably small and eliminate need for belt routing, making packaging easier in a new design shooting for a compact and lightweight powerplant.

barnett468

unfortunately this adds a bearing that now has the same or similar side load the water pump bearing had but it is much easier to replace.
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Gun Jam

I decided against one for now simply because of installation hassel

The 35gpm pumps are too long and will hit my electric fan

The 55gpm pumps should fit but are almost 600. I dont like the idea of having to deal with extra wire or a relay right now.

The reliability seems on par or better with a good mechanical setup. Hp gains are real probably about 5 to 7

I still may consider one later but im not at this time willing to do all the extra work to get my car to properly adsorb this new technology.

67mustang302

True, but at least it's separate from the pump shaft bearings, so if it goes out it doesn't ruin the pump at the same time. I do like that the Mezieres are modular though, and you can replace separate parts like the pump, motor or pulley. They're just a really expensive pump.