[BFix] NASCAR Aluminum Radiator Size

Mon Apr 28 13:17:32 MST 2008

If you've got temp issues after optimizing your cooling system, get an oil cooler, and make sure you have sufficient oil!  Either or both will make a huge difference in water temps.
  ----- Original Message ----- 
  From: bfranklinisg at earthlink.net 
  To: ts ; u100 72 ; mail at broncofix.com 
  Sent: Monday, April 28, 2008 12:14 PM
  Subject: RE: [BFix] NASCAR Aluminum Radiator Size

  This more in response to Lemaneks comment than Matts.  But I would beleive that the engine running headers would create more under hood heat because if you have ever tried to touch an ehaust manifold or header after the truck has been turned off for thirty minutes the manifolds will be a lot hotter to the touch than the headers. Headers because of their wall size tend to release more heat so it would seem reasonable that it would increase underhood temps. Coby Hughey pointed out a long time ago that if your running your auto tranny through the radiator even if it has a secondary cooler your engine will run hotter. I seem to recall that he was running as many as three different coolers with a fan on each one, that he could independently turn on or off. Also I seem to recall him posting that he could watch the tranny temp go down as he flipped the fans on and at the same time watch his engine temp go down.

  I run a 5.0 with headers, a shroud, quality fan, cut fenderwells and a stock radiator. Last year when I had it out in the hot arkansas sun it never overheated, whether sitting in traffic or driving. I had some issues previously after installing the 5.0 but I was still running the C-4 through the stock clean radiator. I now have a ZF tranny and  I still run the stock radiator and it doesn't seem to want to overheat when driving it.

  Ben

    ----- Original Message ----- 
    From: ts 
    To: u100 72;mail at broncofix.com
    Sent: 4/28/2008 9:33:01 AM 
    Subject: RE: [BFix] NASCAR Aluminum Radiator Size

    Doesn't matter. All that rear cross-over CAN do is equalize the temps and coolant pressure btwn the cylinder heads. They do NOTHING for aiding in coolant flow.

    u100 72 <u10072 at hotmail.com> wrote: 
      Where does the rear cross-over go to?

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        From: philmoulton at comcast.net
        To: cat44 at telus.net; u10072 at hotmail.com; mail at broncofix.com
        Subject: Re: [BFix] NASCAR Aluminum Radiator Size
        Date: Sun, 27 Apr 2008 22:24:54 -0700

        Best thing one can do to cool a 351w is have that back crossover open. some aftermarket intakes have it open, some just have the places for drilling and tapping it and installing a crossover hose.

        Phil Moulton
        cell  503-236-0060
        philmoulton at comcast.net

          ----- Original Message ----- 
          From: Erik Christensen 
          To: u100 72 ; Fix Bronco 
          Sent: Sunday, April 27, 2008 7:35 PM
          Subject: Re: [BFix] NASCAR Aluminum Radiator Size

          Spend a lot of time at 180MPH, do you?  There's not much in 'ass-car that is relevant to a 4x4, or anything else, for that matter. 
            Seriously though, as much frontal area as you can manage is a good thing. too thick, and you are not as efficient, but frontal area will always be a help if you sacrifice nothing else to gain it.
           Even more important, optimize your fan and shroud, and coolant flow. 351's are said to have an issue at the back of the heads? not sure, as I've never dealt with it first hand, but there is a cure (someone else who has dealt with this feel free to expand on this)

          Erik
            ----- Original Message ----- 
            From: u100 72 
            To: Fix Bronco 
            Sent: Sunday, April 27, 2008 7:27 PM
            Subject: [BFix] NASCAR Aluminum Radiator Size

            Hello All,
            Does anyone know what the dimensions the radiators most NASCAR teams are running?  I am curious because (while I could care less about an aluminum/copper radiator debate) I am looking to put even more cooling into my truck due to the fact that I have a 351 versus the 302.  With the 302/5.0 there was never a cooling issue in the slightest like most people that run one.  After the 351/5.8 there are times that I wish I had more cooling surface especially out here in the Southwest desert climate.  What I am looking into are the 27 1/2" or 31" universal units that you find the "roundy-round" guys use.

            Thanks,
            Matt

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