[BFix] NASCAR Aluminum Radiator Size

[ts]

More displacement, more fuel (more heat), same H2O pump, same size radiator. No surprise there.

Some intakes have a cross-over port at the rear of the engine. All that does is equalize the cyl head temps. Does little towards improving cooling.

If cooling improvement was a goal of a new intake design it would pull coolant from both ends of both heads and then pass it to the t-stat.
Hate to say it, but IH engines do this. About the only thing they do better than any of the 'name brand' engines is cooling system layout, but it is an important one.

As Erik mentioned, frontal area is key. How many cores is a secondary design consideration. A single core radiator with twice the frontal area of 2 core radiator will cool better than the 2 core. 

Erik Christensen <cat44 at telus.net> wrote:     my 77's 5.0's ran on thermostat (170-190, depending) with  various headers, and for a while with stock manifolds. Duff 4 core  with the inner core pretty much removed due to mechanical interference :) flex  fan(well chewed) and NO shroud. Ambient temps to over 120F at times, but so  long as I kept coolant in it, it did its job. the 351's must just have poor  circulation by comparison.
    ----- Original Message ----- 
   From:    Keith    Forrest 
   To: Jim Lemanek 
   Cc: bfix at broncofix.com 
   Sent: Sunday, April 27, 2008 8:08  PM
   Subject: Re: [BFix] NASCAR Aluminum    Radiator Size
   

    My 5.0 EFI ( 89 Mustang ) with stock    Headders makes lots more heat than my 302 with Manifolds, But it takes more    air to make more power just like blowing on Characoal to stoke the fire. My    new EFI motor is the Howell setup with Manifolds so I will see if it matches    the Heat=Power curve.
    
   Keith
        ----- Original Message ----- 
     From:      Jim Lemanek 
     To: u100 72 ; Fix Bronco 
     Sent: Sunday, April 27, 2008 11:02      PM
     Subject: Re: [BFix] NASCAR Aluminum      Radiator Size
     

     Steve Schmittgens brought it up and I am curious.  If you had a      5.0/302, did you run stock exhaust manifolds?  With the 351, are you      running exhaust manifolds or headers?
      
     Not saying its the cause, just curious.  Steve's thinking headers      cause an issue as he hasn't seen a stock exhaust manifold equipped EB have      issues and I think I have not also. IRREGARDLESS, its just something I am      curious about.
      
     --Jim

u100 72 <u10072 at hotmail.com>      wrote:
            .hmmessage P {  PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px } BODY.hmmessage {  FONT-SIZE: 10pt; FONT-FAMILY: Tahoma }        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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