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Thread: Cooling a sbc 434, machanical or electric

  1. #1
    Junior Member APPRENTICE
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    Cooling a sbc 434, machanical or electric

    Guy's I have decided to build a 434 for my( STREET ROD) yes street rod. How best do I cool this engine, mechanical or electric water pump? The engine will be around 575 hp. I want to keep her cool.

  2. #2
    Senior Member EXPERT BUILDER
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    In my honest opinion... trying to use an electirc water pump on ANY street machine is a BIG no-no...
    Jim
    I'm not hatin... I'm just sayin...

  3. #3

  4. #4
    Junior Member APPRENTICE
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    Cooling a sbc 434, machanical or electric

    That is the pump I am looking at, will it be dependable on the street and long term? What thermostat to run with a 55gpm pump? Mechanical the way to go? I will be in heavy traffic at rod runs, I am thinking that the electric will give me the same gpm idle or running all out.

  5. #5
    Senior Member RACING JUNKIE
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    I run one in my blown small block that i drive when ever i get the chance. No problems and its been on there a little over 2 years. I run a restrictor instead of a thermostat, it has about a 5/8" hole in it.

  6. #6
    Senior Member EXPERT BUILDER
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    electric,with restrictor so i agree with previous dude...im makin 800 horseys without big shot involved and use it on street

  7. #7
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    Cooling a sbc 434, machanical or electric

    So, that is one vote for a mechanical and two for electric. Please give me a few more voters and pro's & con's, so I can make the right choice. I am thinking electric, does the pump mentioned above come with everything needed to install, wiring harness and such?

  8. #8
    Senior Member RACING JUNKIE
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    Quote Originally Posted by DRTRCR22
    In my honest opinion... trying to use an electirc water pump on ANY street machine is a BIG no-no...
    Jim
    please explain why?

  9. #9
    Senior Member RACING JUNKIE
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    In my honest opinion... trying to use an electirc water pump on ANY street machine is a BIG no-no...
    Jim
    That was what everyone thought before about 2 years ago.

    The thing i love about it on my blown car is that i have the electric fans and waterpump wired up to the thermostat for the fans, the pump will run for about 1 minute after i shut the car off, curculating the water and cooling it through the radiator. So atleast it always gets a nice cool down rather than turning the key off and the engine holding heat for 30 minutes. Usually my engine runs warm, the air temp here is 100 degrees and i run more boost than i should, i highly recommend the electric pump above.


    What size and type of radiator are you gonna use?

    You might have to buy the lower radiator hose fitting that screws into the pump according to what size hose you use. I Also believe i wired in a 20 dollar relay to the pump.

  10. #10
    Senior Member EXPERT BUILDER
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    Hmmm... well, maybe this old dog can learn new tricks...?

    I am from old school, and wasn't aware of the claims made by this pump company, and the testimonials from the above users...

    I am also in the HOT desert climates, in southern New Mexico, where you only go cruising at night after it has cooled down to under 100* ambient temps, otherwise you won't get very far no matter how good a cooling system you have.

    So, I digress my recommendation and will investigate further myself...
    I'm not hatin... I'm just sayin...


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