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Not quite K5 related

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by K5Buckeye, Apr 13, 2001.

  1. K5Buckeye

    K5Buckeye Registered Member

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    Well, ever heard of 40 Below? Per instructions, I added 2 bottles of this into my big block chevelle and topped with H2O. NO ANTIFREEZE, yikes! But, she runs much cooler now. B/4 40 Below, it was running 220 almost 230 in traffic. Now, just over 200 in traffic. Is this stuff safe? Anyone else try this stuff?
    Thanks.

    1972 K5
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    I know lots of people that swear by it. I believe circle track racers use it as well. I don't think there is any problem with it, as long as it inhibits rust like antifreeze. You really should be running distilled water, and I believe it should be de-ionized as well, especially if you have any aluminum engine components that touch water. Sounds like you have some other problem to be running that hot though, stock was what, 195 t-stat?

    Dorian
    My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
     
  3. K5Buckeye

    K5Buckeye Registered Member

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    Dorian
    It was just rebuilt, .030 over. Running a 180 t-stat and stewart pump. 4 core rad. All of this is new. B/4 40 Below, the SS was fine on the freeway and around town. But once I got caught in the busier streets with much longer lights in series, that's when I got worried. So I gave this stuff a shot and it seems to work. The other thing I noticed is that once the SS is moving from a long stop, the temp. drops faster. My next choice would've been a Griffen or Be Kool aluminum rad. Guess I'll have to see how it goes as summer makes its way.

    1972 K5
     
  4. dyeager535

    dyeager535 1 ton status Premium Member

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    If its an older radiator, that would be my first bet...definitely shouldn't be running that hot with that motor. You could always check and see how much different the modine #951 radiator is specifications wise from your stock one, they are aluminum, and cost about $150...pretty much direct bolt in for 78-88 RWD Cutlass, Monte, etc...might be similar in size to yours...might also try the newer truck radiators..most of the aftermarket universal ones are missing things like tranny coolers, and the application specific aftermarkets are high $

    Dorian
    My K5 and Chev/Olds tech/links page: <A target="_blank" HREF=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</A>
     
  5. K5Buckeye

    K5Buckeye Registered Member

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    Dorian. Thanks for the lead on the modine... $150!! Sweet. That could save me about 350 bux.


    1972 K5
     

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