Who has got them? What kind of motor are you running? Radiator? Do you have cooling problems with them sitting in traffic or cruising on the freeway? Do any of these have provisions for a heater hose?

Will I need a higher amperage alternator to run one of these? I'm already running electric fans.

 

I wouldn't rely on the stock alternator to run both electric fans and a electric water pump....would make the upgrade to the CS144, '96 Impala one fits fine with a minor mod to the wiring, I have it in my '77 and it works great....DurangoBoy has a write up on it I think

 

But how about cooling? Can an electric pump provide adequate cooling for street driving?

 

More than likely yes, but what are you going to do when it craps out on the road?

 

I'm running a Miezere on the 427 sb with no problems,temps stay at 180 but does climb when I blast down the hyway, and I mean blast!
And its the one with a pully for my serpentine belt.
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Your just overheating because you have no radiator. You really should put one in.

 

Always an interesting discussion and here's my input:
My son has a Fiero that we put a well built 350 into. There are hundreds of Fiero V-8 conversions using electric water pumps. All seem to run cool (ours runs 190* on a scalding day). The pumps are generally Mezzuire and CSR. Most are driven heavily, my son's car is driven on a daily basis, and with some spirit.
There are no reported problems that I'm aware of, the electric pumps work fine. I think that electrical failures that might cause you to be stranded are about the same as electronic ignition or electric fuel pump failures.
Just my experience.

Daffy

 

I've just heard that electric pumps aren't sufficient for cruising (sustained rpms) as they only spin at one speed and don't match the speed of the engine.

I was thinking about getting a Proform unit. But now I'm second guessing it because I'd have to find a different passenger side alternator mount, as mine bolts to the water pump. And I'd also have to upgrade my alternator.

Vetteaddic, does the temp climb if you're just cruising on the highway?

 

One of my buddies is using the Miezere pump in his 70 with a 496 that dynoed at over 650 HP. I was a skeptic but he has never had an issue. It always runs cool and has been reliable.

 

Dual spals, proform electric, alt will absolutly need to be upgraded

mine all work great on the street, but I have never cruised more than 45 min at a time.

 

I'm running a Mezeire with the LT1 in my 97 Camaro SS (Be Cool Radiator), and it works great. There was a slight power increase, and it cools the 383 with no issues even in heavy traffic. I was a bit worried about the reliability, but if it lasts as long as Mezeire claims hourwise (cant remember the exact figure), it will outlast the stock LT1 pumps I have had. In my experience, the stock pumps have been very unrealiable (2 in 60k miles, both new GM pumps).

 

No ,and did notice some hp
Ive been running it for 3yrs. now and drive the car as much as possible.

 

You guys have settled my fear somewhat... I wouldn't be so afraid to put this on my 383 NA. But I'm adding a supercharger this week, which is why I'm still skeptical. Any boosted apps running an electric water pump on the street?

How big of an alternator should I run?

 

S/C here with electric fan, electric fuel pump, electric heated O2 sensor, electronic fuel injection, electric MSD ignition, electric headlights, electric windshield washer fluid squirter and electric water pump. I installed a CS144 (144A) alternator in case I put in electric power steering when I win the lottery.

 

Nice setup Z-Man. I didn't know that whipple made a SC for a SBC. Looks fun

Do you think I'd be ok running the stock alternator with just electric fans and an electric water pump?

 

Why the burning desire for electric fans and pump? Please don't fall for the old myth that it 'will free up some horsepower'.

 

It will to a point, but not enough to feel the difference.

And yes you will need to upgrade to a bigger alt. I have dual spals and and elec water pump. When running both fans I have issues when running 1 fan and elec pump I have no issues and that is with a brand new alt. I messed up and should have gone bigger on the alt.

 

Nope, sorry. The load that you take off the mechanically driven accessories is transferred on a 1:1 basis (at best) to the alternator.

It's very inefficient to turn mechanical energy into electrical, then turn it back into mechanical. That's what your doing by running electrical accessories from an alternator.

No free lunch.

 

Well I'm missing the special length water pump pulley that is supposed to come with my supercharger kit. The pulley itself is $70, and I also have to buy a long mechanical water pump to work with it. But if I went electric, I wouldn't have to buy the pulley or the new mechanical pump and the cost would be roughly the same... so that is my thought process.

I'm leaning towards the mechanical pump as of right now. If I went with the electric I'd have to fab up my own alternator bracket as mine bolts to the water pump (passenger side) and the electric pump has no provisions for the mount. And if it's slightly off, then I risk premature alternator bearing failure. I would also have to upgrade my alternator and/ or adapt the spare (4 wire plug) alternator that I have sitting in the garage. And right now I'm already overwhelmed with the supercharger install by itself.

So unless someone can prove to me that an electric pump will free up gobs of hp, I'm going to stick with the mechanical pump.

Mike Ward, not sure about electrical pumps saving power, but electric fans do. As they have the option of turning off, drawing no extra current. My fans are hardly running, as once I get moving the free air flow is enough to cool the radiator and the temp switch shuts off my fans. And although there is a clutch on a mechanical fan, there is still frictional loss even when it's slipping.

 

So if electric motors can only flow half the coolant... I'm going to stick with a mechanical.