What cools better
#2522295
07/15/18 09:39 PM
07/15/18 09:39 PM
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Joined: Mar 2004
Posts: 314 Medina, OH
dart440_72
OP
enthusiast
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OP
enthusiast
Joined: Mar 2004
Posts: 314
Medina, OH
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I have battled cooling issues for long time. Recently, I saw a post about Champion radiators. People were praising them and how good they were. They said, " I can't get the car over 180* in 95* heat. I on the other hand have the exact opposite problem. So I have a poll before I switch to a Griffin radiator to give that a shot.
What do you use on the street? I'm not concerned about the track because that is a run then shutdown for cooling. I am looking for higher horsepower street driven cars. Mechanical fan and pump? Electric fans and electric pump, combo of both?
72 Dart 500" low deck Indy SR heads. 10.40 @129 best so far
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Re: What cools better
[Re: dart440_72]
#2522311
07/15/18 10:24 PM
07/15/18 10:24 PM
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Joined: Mar 2009
Posts: 2,457 Sydney,Australia
tex013
top fuel
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top fuel
Joined: Mar 2009
Posts: 2,457
Sydney,Australia
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I use a AfCO universal radiator , just had brackets tigged on and adjusted lower hose outlet angle
Tex
New best ET 10.259@129.65 . New best MPH 130.32 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
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Re: What cools better
[Re: dart440_72]
#2522347
07/15/18 11:24 PM
07/15/18 11:24 PM
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Joined: Aug 2011
Posts: 2,843 Pattison Texas
CSK
master
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master
Joined: Aug 2011
Posts: 2,843
Pattison Texas
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512 ci, cold ac, driven in 105deg temps,runs 180 all day long, sitting in traffic or not, 2 row ECP rad, 18" 7 blade flexalite mechanical fan, 68 Charger so far runs 11.33 @ 121, just had the car weighed again, 4050 with me.
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
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Re: What cools better
[Re: dart440_72]
#2522402
07/16/18 03:12 AM
07/16/18 03:12 AM
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Joined: May 2008
Posts: 5,399 Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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The '71 Charger with 500" stroker is still running the stock 26" radiator with the Mopar Performance viscous fan package. I also have a pusher fan in front of the radiator, but mostly use it in the pits to cool the radiator with the engine off. Although this works, it is on the edge, and it temps do creep up on long drives when it is 90+ degrees out. My '69 Coronet 505" stroker had a Champion 26" 4-core radiator. Pretty good for the cost. With Mopar Performance viscous fan package, no problem cooling. With the Contour (Ford) dual cooling fans replacing mechanical fan, it still cooled good until I added A/C and the A/C condenser in front of the radiator. The extra heat load and reduced air flow from the A/C setup made that combination marginal in hot weather. I think mostly airflow related. I have switched to the Griffin Exact Fit radiator and Larger Spal 13" dual fans. I hope it cools better, but I have made other changes and have not driven the car with that setup yet. I also had a GlenRay HD Radiator with the mechanical setup, and it worked great, but when switching to the electric fan setup I did not want to mess up that radiator so I set it aside and installed the Champion. On the Champion radiators, I think in my setup the 3-core may have cooled as well or better than the 4-core because the 4-core is pretty thick and I think that partly reduced the air-flow through the radiator.
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Re: What cools better
[Re: dart440_72]
#2522411
07/16/18 06:35 AM
07/16/18 06:35 AM
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Joined: Jan 2003
Posts: 3,575 The Netherlands
BigBlockMopar
master
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master
Joined: Jan 2003
Posts: 3,575
The Netherlands
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How does the inside of your radiator look when looking through the cap-opening (w/ coolant drained a bit below the toplevel)? Are the channel-entries clean and open? A citric acid treatment cured overheating in a 496ci setup with stock 3-row radiator for me. The car still has a 1:1 crank:waterpump ratio, but it also has its stock 'narrow' steel shroud with a metal flex-fan partly inside. Engine has 10.5:1 CR, XR274-solid roller, Edelbrock heads. Before it had rust and scale-particles blocking the radiator channels and everything had a brownish color. After the first full day-soak in citric acid, the radiator metal already looked like new, aside from a few deposites near the channel-openings. After that I let it soak a few days more while occassionally tilting the radiator to agitate the acid inside.
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Re: What cools better
[Re: dart440_72]
#2522425
07/16/18 09:19 AM
07/16/18 09:19 AM
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Joined: Mar 2004
Posts: 314 Medina, OH
dart440_72
OP
enthusiast
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OP
enthusiast
Joined: Mar 2004
Posts: 314
Medina, OH
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I'm running thermocure through it right now. However, it didn't look too bad inside. It seems like the common theme above is mechanical. I have a double electric fan with a shroud covering 95% of the radiator.
72 Dart 500" low deck Indy SR heads. 10.40 @129 best so far
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Re: What cools better
[Re: dart440_72]
#2522603
07/16/18 03:20 PM
07/16/18 03:20 PM
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Joined: Mar 2013
Posts: 571 Spring Hill Fl
65Fury440
mopar
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mopar
Joined: Mar 2013
Posts: 571
Spring Hill Fl
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Is there a source for a smaller water pump pulley?
I have a 7" single groove water pump pulley and a 5.75" crank pulley.
Last edited by 65Fury440; 07/16/18 03:28 PM.
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Re: What cools better
[Re: 65Fury440]
#2522605
07/16/18 03:33 PM
07/16/18 03:33 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
master
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master
Joined: Sep 2014
Posts: 4,457
Washington
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Is there a source for a smaller water pump pulley?
I have a 7" single groove water pump pulley and a 5.75" crank pulley. You are turning the pump way too slow. That isn't even 1:1 unless the crank pulley is the smaller one.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: What cools better
[Re: madscientist]
#2522622
07/16/18 03:50 PM
07/16/18 03:50 PM
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Joined: Mar 2013
Posts: 571 Spring Hill Fl
65Fury440
mopar
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mopar
Joined: Mar 2013
Posts: 571
Spring Hill Fl
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Is there a source for a smaller water pump pulley?
I have a 7" single groove water pump pulley and a 5.75" crank pulley. You are turning the pump way too slow. That isn't even 1:1 unless the crank pulley is the smaller one. Yes the crank pulley is smaller. My stock crank pulley was just a little over 6.5", didn't think it would matter a whole bunch. I looked at a few different vendors and don't see any overdriven water pump pulleys. That crank pulley was the only diameter Source had when I ordered a new one, my stock pulley had just a little tweak in it. I suppose I could look for a new crank pulley and throw this one in the spare parts box.
Last edited by 65Fury440; 07/16/18 03:51 PM.
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Re: What cools better
[Re: 65Fury440]
#2522695
07/16/18 06:18 PM
07/16/18 06:18 PM
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Joined: Jan 2003
Posts: 4,707 Moved to N.E. Tennessee
GomangoCuda
master
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master
Joined: Jan 2003
Posts: 4,707
Moved to N.E. Tennessee
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Decades ago we all bought the Morose aluminum underdrive pulleys to free up a few horsepower. Now that we have stroker kits and good heads we can easily make a lot more power and we are now digging through the junk pile where the spiders live to find the biggest crank pulley so that we can trade a few of those easy hp for some hard to find cooling. Funny how that works.
In theory, there is no difference between theory and practice. In practice, there is.
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Re: What cools better
[Re: dart440_72]
#2523088
07/17/18 03:12 PM
07/17/18 03:12 PM
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Joined: Jan 2003
Posts: 13,319 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,319
Marion, South Carolina [><]
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I voted electric, b/c that's what I use. Then realized you asked which cools better...that'd be mechanical. I'm just not willing to take the power loss.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: What cools better
[Re: lewtot184]
#2523649
07/18/18 04:25 PM
07/18/18 04:25 PM
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Joined: Jan 2003
Posts: 3,575 The Netherlands
BigBlockMopar
master
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master
Joined: Jan 2003
Posts: 3,575
The Netherlands
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I changed out the 440 source water pump to a mancini 6 blade with the anti-cavitation disc; reduced temps 15-20 degrees. I also use the hi-flow 160F thermostat. i'm still not where I want to be but was very surprised by a pump change. I've also found that the stock blade-type waterpumps seem to flow/cool better than the newer style scroll type waterpumps. Perhaps the scroll type impeller needs to be spun faster before it becomes more efficient. I'm sure someone has done a study about that somewhere in the (recent) past.
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Re: What cools better
[Re: dart440_72]
#2523767
07/18/18 07:41 PM
07/18/18 07:41 PM
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Joined: Jan 2003
Posts: 19,304 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,304
Las Vegas
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My street car has a Becool aluminum radiator and a Spal dual fan set up with a shroud. fan is set of 200 and shits off at 175. Car never gets hot driving all over town. Engine makes 750ish HP on pump swill
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: What cools better
[Re: Al_Alguire]
#2524176
07/19/18 05:36 PM
07/19/18 05:36 PM
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Joined: Mar 2004
Posts: 314 Medina, OH
dart440_72
OP
enthusiast
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OP
enthusiast
Joined: Mar 2004
Posts: 314
Medina, OH
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My street car has a Becool aluminum radiator and a Spal dual fan set up with a shroud. fan is set of 200 and shits off at 175. Car never gets hot driving all over town. Engine makes 750ish HP on pump swill Thats awesome!! That's what I need to hear. What kind of water pump? Thermostat / Restrictor? Water or coolant?
72 Dart 500" low deck Indy SR heads. 10.40 @129 best so far
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Re: What cools better
[Re: dart440_72]
#2524235
07/19/18 09:01 PM
07/19/18 09:01 PM
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Joined: Mar 2008
Posts: 859 lancaster,california
johnnycuda
super stock
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super stock
Joined: Mar 2008
Posts: 859
lancaster,california
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Come on Al, inquiring minds wanna know!
1970 'Cuda,Lime Light,499 Indy S/R's 10.70's @125,street driven ALOT! 1966 Barracuda 360,now a 5spd,Hemi Orange,Hot Rod Air, New daily driver-2003 Ram 2500 Cummins 5.9 '69 Valiant 2-dr, sleeper! New project---1938 Dodge truck, plan is a 360 with a A500, AC, Calvert rear susp., rack and pinion front with coils.
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