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Will a 38 Dodge radiator cool a 440? #808632 09/19/10 10:28 PM 09/19/10 10:28 PM
Joined: Feb 2005 Posts: 672 Keysville, VA D drag440 OP mopar addict
drag440 OP mopar addict D Joined: Feb 2005 Posts: 672 Keysville, VA	I am getting ready to build a rat rod and will be using a 1938 Dodge fire truck grill shell. I have the radiator that came with it and it looks real good. Will this rad. cool a 500 hp 440 if I have it cleaned and checked out?

Re: Will a 38 Dodge radiator cool a 440? [Re: drag440] #808633 09/20/10 09:08 PM 09/20/10 09:08 PM
Joined: Jun 2008 Posts: 251 Lithonia, Ga 3 36PLYM enthusiast
36PLYM enthusiast 3 Joined: Jun 2008 Posts: 251 Lithonia, Ga	NO! 36 Plymouth Coupe 318 w/360 heads 518 trans 8 3/4 rear Ga. Tech BCE'78

Re: Will a 38 Dodge radiator cool a 440? [Re: 36PLYM] #808634 09/20/10 11:03 PM 09/20/10 11:03 PM
Joined: Feb 2005 Posts: 672 Keysville, VA D drag440 OP mopar addict
drag440 OP mopar addict D Joined: Feb 2005 Posts: 672 Keysville, VA	Thats too bad.It would have saved me a lot of money

Re: Will a 38 Dodge radiator cool a 440? [Re: drag440] #808635 09/21/10 12:37 AM 09/21/10 12:37 AM
Joined: Jan 2007 Posts: 26 PA W Waynes48 member
Waynes48 member W Joined: Jan 2007 Posts: 26 PA	I'm pretty sure the radiators of that era were not designed for pressurized service. I know for a fact that radiators for a 1948 Plymouth were of a "honeycomb" design, and would not withstand any pressure. They were adequate for the original engines, but not for an engine of that size. It's very, very doubtful it would be adequate for your needs. Better to find a replacement new radiator that will fit.

Re: Will a 38 Dodge radiator cool a 440? [Re: Waynes48] #808636 09/21/10 10:14 PM 09/21/10 10:14 PM
Joined: Feb 2005 Posts: 672 Keysville, VA D drag440 OP mopar addict
drag440 OP mopar addict D Joined: Feb 2005 Posts: 672 Keysville, VA	Thanks for the info. It is a honeycomb radiator. I figured it would not do the job, but it is very tall and thick and in good shape so I thought maybe.

Re: Will a 38 Dodge radiator cool a 440? [Re: drag440] #808637 09/21/10 10:25 PM 09/21/10 10:25 PM
Joined: Sep 2010 Posts: 20 ontario Canada 7 73b3challenger member
73b3challenger member 7 Joined: Sep 2010 Posts: 20 ontario Canada	well i have a 1941 dodge truck whit a 340cu and am using a honey cone rad it work great keep the engine cool .it never over flo or over heated . You can try it you have nothing to lose.

Re: Will a 38 Dodge radiator cool a 440? [Re: 73b3challenger] #808638 09/21/10 10:59 PM 09/21/10 10:59 PM
Joined: Sep 2005 Posts: 12,481 Chino Valley RodStRace I Live Here
RodStRace I Live Here Joined: Sep 2005 Posts: 12,481 Chino Valley	I plan on using the stock honeycomb for my 5.2L magnum, and the radiator guy said it should be fine for a 318. The old flatheads got pretty hot around the exhaust ports. However, a 440 is bigger, cutting down on airflow even more, plus it's going to develop more heat. I'd really suggest getting a radiator that is designed for the heat load and the airflow.

Re: Will a 38 Dodge radiator cool a 440? [Re: RodStRace] #808639 09/22/10 06:12 AM 09/22/10 06:12 AM
Joined: Feb 2003 Posts: 695 S E Michigan E ekim mopar
ekim mopar E Joined: Feb 2003 Posts: 695 S E Michigan	http://www.thebrassworks.net/

Re: Will a 38 Dodge radiator cool a 440? [Re: ekim] #808640 09/23/10 12:37 PM 09/23/10 12:37 PM
Joined: Nov 2008 Posts: 178 New Berlin,Wi F Firepowerflyer member
Firepowerflyer member F Joined: Nov 2008 Posts: 178 New Berlin,Wi	I have a 36 dodge with a healthy 440 I used the stock upper and lower tanks and had it recored locally.That being said you still can't run a high pressure cap,I think a 7lb cap max.I have a mechanical fan with a pusher in front.It cools ok on the freeway but in traffic it will boil over,so I have the pusher to overcome that and has not overheated yet.I've had in nonstop bumper to bumper in temps in the 90s with no issue.If I was to do it again I would bite the bullet and buy a walker. Joe

Re: Will a 38 Dodge radiator cool a 440? [Re: drag440] #808641 09/24/10 10:02 AM 09/24/10 10:02 AM
Joined: Jan 2003 Posts: 1,335 Oregon E earlymopar pro stock
earlymopar pro stock E Joined: Jan 2003 Posts: 1,335 Oregon	I did not have a stock radiator to rebuild in doing my 37' Dodge. I also felt and feel that most of the aftermarket radiators that are made for 30's era cars are way over-priced even though they are good products. I bought a $180 aluminum cross-flow radiator (summit or others), turned it 90 degrees to fit my narrow grill shell and radiator support, plugged the existing inlets and outlets and added an inlet and outlet in the upper and lower radiator hoses. Works great. - EM

Re: Will a 38 Dodge radiator cool a 440? [Re: earlymopar] #808642 10/04/10 03:20 PM 10/04/10 03:20 PM
Joined: Jun 2004 Posts: 1,318 central Kentucky moprod pro stock
moprod pro stock Joined: Jun 2004 Posts: 1,318 central Kentucky	Got a Aluminum radiator in my '35, new water pump, new 180 thermo and mine still runs warmer than I like. Yesterday, 55 degree weather on the interstate running 195, stop in traffic goes to 210. Have no room for a factory type fan, only using electric puller set to kick on at 185. I have an electric gauge wondering if a mechanical would read different, car shows no signs of overheating? [img] [/img]

Re: Will a 38 Dodge radiator cool a 440? [Re: moprod] #808643 10/05/10 01:20 AM 10/05/10 01:20 AM
Joined: Jan 2003 Posts: 10,558 Freeport IL USA poorboy I Live Here
poorboy I Live Here Joined: Jan 2003 Posts: 10,558 Freeport IL USA	I have to wonder how congested it is under your hood. For the cooling system to function, air that passes through the rad has to be able to exit from under the hood. Many guys close up most of the air exit routes with street rods. When the flathead 6 was there, air exited around the sides of the engine, through the louvers on the inner fender panels, and under the floor around the bell housing. When you fill those areas with V8 engine, headers, brake boosters, and remove the louvered inner panels, you leave little room for the heated are to exit.Look for ways to improve air flow through the engine compartment. Also, over heating on the highway can be caused by a lean engine, too advanced timing, or moving the coolant through the system too quickly. Could be a defective gauge but really, 210 is not overheating, water boils at 212 and if its under pressure like in a closed cooling system, that boiling point can be as high as 250. It may be higher then you (and I) would like, but not hot enough to damage the engine. How does it do when it gets hot outside, or driven around town? Gene

Re: Will a 38 Dodge radiator cool a 440? [Re: poorboy] #808644 10/05/10 10:00 AM 10/05/10 10:00 AM
Joined: Jun 2004 Posts: 1,318 central Kentucky moprod pro stock
moprod pro stock Joined: Jun 2004 Posts: 1,318 central Kentucky	Gene, in the summer when temps were in the 90's it still ran the same temps. The louvered inner fenders are still in the car also. 6234191-1935004.JPG (245 downloads) Last edited by moprod; 10/05/10 10:03 AM. [img] [/img]

Re: Will a 38 Dodge radiator cool a 440? [Re: moprod] #808645 10/06/10 12:18 AM 10/06/10 12:18 AM
Joined: Jun 2008 Posts: 251 Lithonia, Ga 3 36PLYM enthusiast
36PLYM enthusiast 3 Joined: Jun 2008 Posts: 251 Lithonia, Ga	I also have an aluminum radiator in the 36, the small block does fill up the engine bay. I had a problem with the fan coming on at 220, engine temp. Moved the fan switch from the radiator to the intake. Now it comes on at 200 and off around 190, no more dieseling and seems to be cooler all around. 36 Plymouth Coupe 318 w/360 heads 518 trans 8 3/4 rear Ga. Tech BCE'78

Re: Will a 38 Dodge radiator cool a 440? [Re: earlymopar] #808646 10/06/10 05:51 PM 10/06/10 05:51 PM
Joined: Sep 2010 Posts: 40 Santa Cruz, Ca 4 4woody member
4woody member 4 Joined: Sep 2010 Posts: 40 Santa Cruz, Ca	Quote: I did not have a stock radiator to rebuild in doing my 37' Dodge. I also felt and feel that most of the aftermarket radiators that are made for 30's era cars are way over-priced even though they are good products. I bought a $180 aluminum cross-flow radiator (summit or others), turned it 90 degrees to fit my narrow grill shell and radiator support, plugged the existing inlets and outlets and added an inlet and outlet in the upper and lower radiator hoses. Works great. - EM Got a photo? You plugged the existing inlet/outlet and then put new ones into the tank?? Just want to understand what all you did. Thanks

Re: Will a 38 Dodge radiator cool a 440? [Re: 4woody] #808647 10/07/10 10:09 AM 10/07/10 10:09 AM
Joined: Jan 2003 Posts: 1,335 Oregon E earlymopar pro stock
earlymopar pro stock E Joined: Jan 2003 Posts: 1,335 Oregon	I don't have a picture but yes, I trimmed-off and plugged the original inlet and outlets. The new inlet and outlet are separate pieces that fit in the upper and lower radiator hoses. You can buy these pieces from Summit or Jegs.

Re: Will a 38 Dodge radiator cool a 440? [Re: earlymopar] #808648 10/15/10 02:56 AM 10/15/10 02:56 AM
Joined: Dec 2004 Posts: 1,757 levittown pa fstfish66 top fuel
fstfish66 top fuel Joined: Dec 2004 Posts: 1,757 levittown pa	Quote: I don't have a picture but yes, I trimmed-off and plugged the original inlet and outlets. The new inlet and outlet are separate pieces that fit in the upper and lower radiator hoses. You can buy these pieces from Summit or Jegs. you say they fit in the hoses,,,,did you open up the tanks and put the inlets where you needed them ??and reweld ? 1966 barracuda prostreeter super charged 340(SOLD) 1940 dodge coupe 241 hemi street rod 2014 ram express hemi 4x4 dailey driver 2015 cherokee 2013 R/T classic

Re: Will a 38 Dodge radiator cool a 440? [Re: fstfish66] #808649 10/17/10 01:52 AM 10/17/10 01:52 AM
Joined: Jan 2003 Posts: 1,335 Oregon E earlymopar pro stock
earlymopar pro stock E Joined: Jan 2003 Posts: 1,335 Oregon	Sorry in my haste I mis-spoke / mis-typed. I left the inlet and outlets as they came on the radiator but cut-off and plugged the filler neck that was located on top/side. That was replaced by one that fits in-line in the upper radiator hose between the radiator and manifold. I used a similar unit in the lower hose that allows me to drain the radiator.

Re: Will a 38 Dodge radiator cool a 440? [Re: earlymopar] #808650 10/17/10 08:53 PM 10/17/10 08:53 PM
Joined: Dec 2004 Posts: 1,757 levittown pa fstfish66 top fuel
fstfish66 top fuel Joined: Dec 2004 Posts: 1,757 levittown pa	Quote: Sorry in my haste I mis-spoke / mis-typed. I left the inlet and outlets as they came on the radiator but cut-off and plugged the filler neck that was located on top/side. That was replaced by one that fits in-line in the upper radiator hose between the radiator and manifold. I used a similar unit in the lower hose that allows me to drain the radiator. ok that makes sense now i can picture it 1966 barracuda prostreeter super charged 340(SOLD) 1940 dodge coupe 241 hemi street rod 2014 ram express hemi 4x4 dailey driver 2015 cherokee 2013 R/T classic

Re: Will a 38 Dodge radiator cool a 440? [Re: fstfish66] #808651 11/14/10 09:33 PM 11/14/10 09:33 PM
Joined: Mar 2008 Posts: 199 SE Wisconsin 4 49wayfarer member
49wayfarer member 4 Joined: Mar 2008 Posts: 199 SE Wisconsin	So then I take it a 49 Dodge radiator won't work for a big block. I figured it wouldn't, and I won't be running the fan, will be using an electric pusher.

Re: Will a 38 Dodge radiator cool a 440? [Re: 49wayfarer] #808652 11/15/10 11:38 AM 11/15/10 11:38 AM
Joined: Jan 2003 Posts: 1,335 Oregon E earlymopar pro stock
earlymopar pro stock E Joined: Jan 2003 Posts: 1,335 Oregon	Pusher fans usually end up causing more problems than they solve given that they block the ability for air to flow into the radiator. - EM

Re: Will a 38 Dodge radiator cool a 440? [Re: 49wayfarer] #808653 11/26/10 03:06 AM 11/26/10 03:06 AM
Joined: Dec 2004 Posts: 1,757 levittown pa fstfish66 top fuel
fstfish66 top fuel Joined: Dec 2004 Posts: 1,757 levittown pa	i have found that a mechincal fan works better,even in the tightest places,,or an electric puller that has a built in shroud,,or make a shroud.,,,,do a search on the H A M B ive seen some clever home made fan shrouds 1966 barracuda prostreeter super charged 340(SOLD) 1940 dodge coupe 241 hemi street rod 2014 ram express hemi 4x4 dailey driver 2015 cherokee 2013 R/T classic

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