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tips for towing with a 440
#135810
10/13/08 01:33 PM
10/13/08 01:33 PM
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Joined: Jan 2008
Posts: 350
CT USA
Nick Mineau
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OP
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CT USA
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im curently towing a 6500 lb trailer with my 440 powerd chrysler. it has a hemi 4 core radaitor, auto trans with a small add on coller, clutch fan, and pulls great. in traffic temps are 180 but on a long constant grade the temps rise to 210 and dont come down until the downhill. what can i do to keep temps below 200 at high speeds. thanks
Last edited by Nick Mineau; 10/13/08 05:09 PM.
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Re: tips for towing with a 440
[Re: MoparforLife]
#135812
10/13/08 04:40 PM
10/13/08 04:40 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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you might check what your trans is running at also & consider a much larger cooler
live every 24 hour block of time like it's your last day on earth
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Re: tips for towing with a 440
[Re: MoparforLife]
#135813
10/13/08 04:54 PM
10/13/08 04:54 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
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Too Many Posts
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Posts: 28,312
Cincinnati, Ohio
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Quote:
Towing gear ratio of 3.55 or lower and drive accordingly with a load equalizer hitch. There are many here that will say you are nuts but I won't. Back in the day there were many loads towed with cars rather than Sunday go to meeting trucks. people may only have had one vehicle as an all around vehicle and a old farm pickup. They used what they had and didn't have a vehicle for every occation. 
Rear end gear ratios are very important when it comes to towing. Not enough gear and you are murdering your motor. I hope your not towing with a set of 2.76s in there. 
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Re: tips for towing with a 440
[Re: Nick Mineau]
#135815
10/13/08 04:58 PM
10/13/08 04:58 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
i was thinking a off using a larger trans coller and possibly not puting it in series with the radiator would help the engin temp as well. what do you all think.
Can't hurt.
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Re: tips for towing with a 440
[Re: Challenger 1]
#135816
10/13/08 05:04 PM
10/13/08 05:04 PM
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Joined: Jan 2008
Posts: 350
CT USA
Nick Mineau
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enthusiast
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OP
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CT USA
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i run 3.23's and power is very plentfull. ive never had to go past 1/4 throttle while towing even on big hills. just having high speed colling issues.
(that 440 pulls a trailer like its a toy)
Last edited by Nick Mineau; 10/13/08 05:07 PM.
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Re: tips for towing with a 440
[Re: Nick Mineau]
#135817
10/13/08 05:09 PM
10/13/08 05:09 PM
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Joined: Jul 2008
Posts: 30,632
Florida STAYcation
IcorkSOAK
Financed his waterbed
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Financed his waterbed
Joined: Jul 2008
Posts: 30,632
Florida STAYcation
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Quote:
i was thinking a off using a larger trans coller and possibly not puting it in series with the radiator would help the engin temp as well. what do you all think.
NOT a good idea if you are using the car during the colder months. The trans and ATF will never get UP to temp.
I would suggest a LARGE electric puller fan. It would help A LOT when you are pulling that trailer up a decent grade. Plus it will help in the mpg dept.
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Re: tips for towing with a 440
[Re: IcorkSOAK]
#135818
10/13/08 05:11 PM
10/13/08 05:11 PM
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Joined: Jan 2008
Posts: 350
CT USA
Nick Mineau
OP
enthusiast
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OP
enthusiast
Joined: Jan 2008
Posts: 350
CT USA
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Quote:
Quote:
i was thinking a off using a larger trans coller and possibly not puting it in series with the radiator would help the engin temp as well. what do you all think.
NOT a good idea if you are using the car during the colder months. The trans and ATF will never get UP to temp.
I would suggest a LARGE electric puller fan. It would help A LOT when you are pulling that trailer up a decent grade. Plus it will help in the mpg dept.
should i add a eletric fan to my existing setup or replace my clutch fan with eletric one. like i say its only at 40 mph or more i have a problem. how large
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Re: tips for towing with a 440
[Re: Nick Mineau]
#135819
10/13/08 05:13 PM
10/13/08 05:13 PM
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Joined: Mar 2007
Posts: 3,298
West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,298
West Coast, USA
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Are you running a radiator shroud? What is the total timing set at? What kind of gauge are you measuring the temp with?
Don't bypass the radiator tranmission cooler, because it helps to get your trans up to operating temperature which reduces wear. You can and should run an adequate sized trans cooler plumbed after the radiator to drop transmission tempratures even further. Also, you will see a significant drop in tran temp by switching to synthetic fluid.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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Re: tips for towing with a 440
[Re: IcorkSOAK]
#135821
10/13/08 05:24 PM
10/13/08 05:24 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Quote:
i was thinking a off using a larger trans coller and possibly not puting it in series with the radiator would help the engin temp as well. what do you all think.
NOT a good idea if you are using the car during the colder months. The trans and ATF will never get UP to temp.
I would suggest a LARGE electric puller fan. It would help A LOT when you are pulling that trailer up a decent grade. Plus it will help in the mpg dept.
Funny my truck came with a optional trans cooler and a block heater, so it was built for cold climates.
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Re: tips for towing with a 440
[Re: MoparforLife]
#135824
10/13/08 06:25 PM
10/13/08 06:25 PM
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Joined: Jan 2008
Posts: 350
CT USA
Nick Mineau
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enthusiast
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OP
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Posts: 350
CT USA
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Quote:
Always run an aux. transmission cooler in conjunction with the radiator cooler if using the vehicle for towing. Towing packages all had coolers included for a reason. 
i do have a small aux coller but im wondering if i could bypass the radiator completly. it seems its a bad idea
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Re: tips for towing with a 440
[Re: Nick Mineau]
#135826
10/13/08 07:28 PM
10/13/08 07:28 PM
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Joined: Jan 2003
Posts: 7,526
Minnesota
Hemi_Joel
master
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master
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Posts: 7,526
Minnesota
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I have to repectfully disagree with some of the others. I would NEVER replace a good fan and thermal fan clutch setup with an electric fan. No electric fan will outperform a really good engine driven fan, and a thermal fan clutch only uses power when needed, just like an electric.
But anyway, if your cooling issues are at 40 mph +, the fan has nothing to do with it. Overheating at slow speed indicates airflow issues,high speed heating does not. (with rare exeptions) There is enuff air moving past thru the radiator from the movement of the car.
You have either not enuff water flow, not enuff radiator capacity, or making too much heat (late timing or converter slip could be factors)
Since you already have a big radiator, first make sure that it is clean inside and out. Bugs or crud between the fins can severely reduce the cooling capacity of the radiator, as can corrosion inside.
Also, make sure that your timing marks on the balancer are accurate and that the ignition timing is properly set. Retarded timing can cause hot running. And remember, if you have your timing a little late, the vacuum advance will crutch it most of the time, but you have less vacuum advance when pulling up a hill.
But 210 is not that hot. If that's as hot as it gets ever, I would not be too worried about it.
[img]http://i.imgur.com/boeexFms.jpg[/img]31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
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Re: tips for towing with a 440
[Re: Hemi_Joel]
#135827
10/13/08 07:37 PM
10/13/08 07:37 PM
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Joined: Jul 2008
Posts: 30,632
Florida STAYcation
IcorkSOAK
Financed his waterbed
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Financed his waterbed
Joined: Jul 2008
Posts: 30,632
Florida STAYcation
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Quote:
and a thermal fan clutch only uses power when needed, just like an electric.
Tell this to the Diesel Ram boyz ! ..... and why some of them have removed their CF and seen a MPG improvement of 1.5-2.5 mpg.
I have a 98 myself .... and my "thermal" unit "works" most all the time. Even when the engine is dead-cold.
Sorry to disagree.
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Re: tips for towing with a 440
[Re: Hemi_Joel]
#135828
10/13/08 07:54 PM
10/13/08 07:54 PM
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Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
dave571
master
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master
Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
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Quote:
I have to repectfully disagree with some of the others. I would NEVER replace a good fan and thermal fan clutch setup with an electric fan. No electric fan will outperform a really good engine driven fan,
I agree 100%. This car is already just on the edge of overheating. Electric will be big mistake 
I know diesel fords have been running an electrically actuated engine driven fan for years. Can't get straight electric to move enough air.
Quote:
if your cooling issues are at 40 mph +, the fan has nothing to do with it. Overheating at slow speed indicates airflow issues,high speed heating does not. (with rare exeptions) There is enuff air moving past thru the radiator from the movement of the car.
Also agree 100% but he did say it comes up on the grades, and stays up. Not that it'll run hot on flats. I think the trans cooler is the way to go. The trans makes a lot of heat.
Quote:
But 210 is not that hot. If that's as hot as it gets ever, I would not be too worried about it.
I also agree, although it can be nerve racking.
I put a remote trans cooler on the winni I tow with. It is mounted by the rear dif, with it's own electric fan. The cooler is huge. It's from a 06 superduty ford diesel. The fan is from a K car radiator.
Huge difference. I switch it on on the hills. On a hot day, if I leave them on by mistake, it cools the motor down an aditional 10 degrees.
I think a remote trans cooler is a great idea. Just plumb it in the return line from the rad trans cooler. Then you still get engine warming on the trans fluid at cold start, and with the fan off, it won't make it too cold.
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Re: tips for towing with a 440
[Re: dave571]
#135829
10/13/08 08:50 PM
10/13/08 08:50 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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In addition to the above excellent suggestions, make sure the carb isn't "going lean" at load. I would guess you are on the raggod bottom "under the torque curve."
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