im my quest to free up a few HP i am concedering an electric water pump. the one im looking at flows 55 gpm. how many of you guys run an electric pump on a limited driven street car? will they keep the engine cool? any other problems to conceder? thanks Dave

I run the billet pump from Moroso on my 470 big block. Stock 4 core radiator and electric fan. I also installed a Moroso switch in the cyl head to turn the pump on. I believe it's set to turn on at 165 degrees. I also run no thermostat in the intake.
It works great, and I very rarely have to turn on the fan. I'm sure when the outside temp gets up to around 90 or so, I'll have to run the fan.
This is about 650 H.P. with aluminum heads, and the longest I've driven it was about a half hour, to a local cruise night. The temp. never started to creep up any, so I think it would be ok on longer trips. I think you'll like it.
The only pain is installing the accessories and belt routing. Take the time to plan that out before making the purchase. I only run an alternator and had to make a custom mount. Good luck. graemlins/thumbsup.gif

The Mezziere 55 gpm pumps work great. Used one in a Cobra replica with a 400 Small block and ProCharger; never went above 185 even idling in 100+ degree heat.

With all that said, I still wouldn't use one unless it was required (couldn't get the blower belt to clear a standard water pump). Just one more thing to fail, and the good Edelbrock and Stewart mechanical pumps use very little power to turn.

Jody

make sure your radiator is up to the task of cooling your combo also.an electric water pump is only as good as your radiator.they need to work as a team. ;)

the rad. is a large griffen with duel flex-a-lite fans. alluminum headed 383. texas heat gets to 100* at times. not sure what if any ET gains are there, just something else to check. thanks Dave

Dave, you've seen how mine does. I've got a spare if you want to try it before taking the plunge your more than welcome. Also, we'll be moving soon, I'll get with with on our new address.

it isnt about et gains, but quicker cooling between rounds, since you can circulate coolant while the engine is off.

But now you're going to have to get a small generator to keep on your battery between rounds.

..what Brian said..not really meant for the street.Another misunderstood component IMHO

well i know i would be tempted to run an electric pump on the street if i was looking for better e.t. or mph..........

i have ran my bbc a few times with out the stock water pump hooked up and i know for a fact i gain darn near .2 tenths and right at 3 mph with out it.........and the times i have launch the car and thrown the belt on the upper end the car acts like it just got a small rush of nitrous..........

not sure about the small block water pumps but i know those bbc stock pumps suck up the power big time............infact i just bought me a moroso electric pump to put on the race car the e.t. gain and mph gain was worth the 200 bucks outlay since now im just trying to dig out the last amount of horsepower out of my combo......granted this will not be street driven .........besides it will help on cool downs between rounds........

i wouldnt shy away from the idea to put one on a street car......but i have always been tight with the money and i would have to know for sure weather there will be a gain or not......in this case i know the bbc would benifit......

if you got the money go for it......then fill us in on how it turns out...........

Been using a Meziere 35 gpm pump on my Chevelle for about 11,000 street miles on a 540 ci, 649 hp engine with no problems in the Houston area heat. I have a large BeCool rad, two 14" Spal fans and no thermostat (yea, I know what everyone says about no thermostat). I carry a spare motor & impeller section, but have not needed it yet. I doubt if there is a seat of the pants performance gain with it. Not saying it's for everyone, but it works for me.

I know of a guy with a Nova that at the time had a 350 with 305 heads on it and an electric water pump took 3 tenths off his time! He was running solid 12's too. I believe that was the Moroso pump. My boss has the Moroso pump on his daily driver and it works nice. He's also got an aluminum radiator and dual electric fans, the other day the pump started making a funny noise though so he thinks its goin out:( Still he has put many miles on it!

I tried a Moroso water pump drive on mine,with no improvement,the motor was just turning the alternator, then I forgot that I left it on when I got back to the pits and ran the battery down,had to jump start to make the next round. I hooked it back up and run a clutch fan. The aluminum radiator made a big difference in cooling between rounds,seems to dissipate heat much quicker than the stock radiator.

OK, i orderd the mezziere 55 pump today. called March about a alt.bracket. heres the good news. March makes a bracket thats not in the books no where. they are built to order, for an electric water and and allows the alt to be bolted on the passenger side. (the long pump set up) Cost, 100$. powder coated.

Dave,
should be fine with the minimal street driving that you do, i wouldnt worry about it much.

But also i wouldnt expect it to free up "tenths".

I ran a modified heater motor to turn the water pump. The alt. was directly off the crank pulley on the old super Street car. It worked fine even with an old 6in dryer pulley on the alt. The ability the run the elec fan and turn the water pump between rounds was a definate plus in the heat of the summer.

It's doing away with the fan that saves the most power as the water pump doesn't take too much. Clutch fans are fairly efficient but the rest aren't.