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  1. #1
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    Aug 2007
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    Cooling question.

    Do you guys think a close out panel (radiator close out) on a '68 Camaro would help in cooling the motor?


    Carl Wilson
    1968 Camaro - T-56 6 speed - 383 Stroker, 2014 Mustang GT seats


  2. #2
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    Sep 2004
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    Probably not, but you could tape it up and try it, before spending $$. But they do look cool.

  3. #3
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    Just the top or a full closeout? Just the top I have no idea but a full closeout of the core support and top would help at speed a lot.

  4. #4
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    I think they look good, but if you're having a cooling issue I don't think they would help enough to change that by just pulling a bit more outside air.

  5. #5
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    I'm not having a problem at present, but just wondered if it would help any, and yes, they do look cool. What about closing the radiator out around the fan? I have a big aftermarket fan with the sides around the fan open. Should they be closed in?

    Carl Wilson
    1968 Camaro - T-56 6 speed - 383 Stroker, 2014 Mustang GT seats

  6. #6
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    Quote Originally Posted by minendrews68 View Post
    I'm not having a problem at present, but just wondered if it would help any, and yes, they do look cool. What about closing the radiator out around the fan? I have a big aftermarket fan with the sides around the fan open. Should they be closed in?
    Yes they should be closed in! The fan can only pull from the area it is closed in too. However if you close it in make sure it can flow when the fan is NOT pulling air. That is why the factory and better aftermarket setups have flaps that close when the fan is on and open when the airflow is greater than the fan.
    1969 Camaro

  7. #7
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    Yes, close out panels can help with cooling. They reduce the chance of hot air being recirculated back through the radiator. There is a reason the OEM manufacturers have all that ducting in place on modern cars. The more cool air the radiator can flow the better it works compared to recirculating hot air from under the hood.

    And for a fan to work at it's best the radiator should be fully shrouded. That forces the fan to pull air through the core, not in from the sides. Remember air follows the path of least resistance. As mentioned above, be sure to put flapper valves or turn the fan off at high speeds to ensure you are not blocking flow on the highway.
    Nelson
    1969 Chevelle "Cone Smasher" Family Project
    https://www.pro-touring.com/threads/...uot?highlight=

    1984 "Rustang" GT, 5.0, 5 Speed Project
    https://www.pro-touring.com/threads/...T-(Slow-Build)

  8. #8
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    Thanks guys..

    Carl Wilson
    1968 Camaro - T-56 6 speed - 383 Stroker, 2014 Mustang GT seats

  9. #9
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    I think its crazy that with all the parts available for 1st gens, nobody has come out with a hood with functioning airflow vents yet. Hello Goodmark...? Are you listening?!? LOL

    All of these underhood heatsoak issues would go away if they designed a hood and mating air cleaner assembly to ram air in thru the front area of the hood and let it out under/behind the hood along the cowl area-this provides downforce on the front while creating a very high pressure cowl area from which all underhood heat is sucked through and out. I’ve built a few custom hood treatments using this method and its very effective and unique.
    "...if at first you don't succeed, try again.
    If you still don't succeed, then quit-no sense being a damn fool about it..."
    -W.C. Fields

    HARNESSWORX
    (formerly gmachinz)

  10. #10
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    The base of a 1st gen windshield is high pressure from the outside. That's why the location was chosen for cowl induction. Opening up that location forces air into the engine compartment.

    From a hood venting standpoint on a 1st gen, the farther forward, the better. From a practical standpoint, just behind the cooling fan works.
    VaporWorx. We Give You Gas http://www.vaporworx.com

  11. #11
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    Nov 2016
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    Sulphur, La
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    I have always been impressed with how many people believe that a cowl INDUCTION hood lets hot air escape.

  12. #12
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    On the shroud around the fan, how do you make a flapper that opens and closes, especially if your making the shroud yourself? I took a run in the Camaro this afternoon. (hottest day this year). On the by-pass, running around 65-70 mph the temps hovered around 200*, with or without the AC on. When I came off the by-pass and had to wait for a while to be let in line (due to traffic being backed up) it started climbing to around 215* with the AC on. I turned it off and started moving and it returned to the 200* mark. My fan runs constantly after it reaches 185*. So, you guys are saying the shroud would help in stand still traffic?

    Carl Wilson
    1968 Camaro - T-56 6 speed - 383 Stroker, 2014 Mustang GT seats