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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #1  
Old 07-05-2010, 06:21 PM
RammD RammD is offline
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Default What's our Stock T-STAT? Any benefit to swapping it?

I'm just asking this b/c I know with my last car (Charger) I ended up swapping the stock T-STAT which got really hot in the summer and caused the Hemi to get "sluggish." I swapped it with a 180 Jet T-STAT and the problem was solved. That was a 2007 Dodge Charger, 5.7L HEMI.

What T-Stat comes with our 5.7L Ram's? Any Chance Dodge finally got it right and shipped them with a 170 or 180 T-Stat or would it be advisable to once again change the T-Stat in the Ram? Thanks.
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Old 07-05-2010, 06:25 PM
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Same stat comes in all the Hemi's. It's not a matter of "getting it right". Running them a bit hotter helps reduce emissions.
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Old 07-05-2010, 07:05 PM
RammD RammD is offline
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I see, thanks for the reply. So would it be safe to say that a lot of Ram owner's, just like Charger owners...swap their stock T-STAT's with a 170 or 180? I mean, is this as common a mod on the Ram's with the HEmi's as it was with the Chargers?
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Old 07-06-2010, 01:05 AM
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..I run a 180 tstat...and yes it is very common with the guys who do mods..
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Old 07-06-2010, 01:12 AM
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..a big worry with the guys who mod is runnin lean, pre-detonation an knocking...using a lower temp tstat will add fuel... one less worry when I'm out driving around a little bit on the spirited side..
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Old 07-13-2010, 03:29 PM
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We sell them! It would be a Jet 180° Thermostat. Let me know if I you would like to purchase one, they are $30.88 before shipping.
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Old 07-13-2010, 05:11 PM
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I think you'd see the same improvement in a cooler running engine with a lower value TStat.

A couple things to consider:

1. If you have electric fans, you won't see the full benefit until you add a programmer that will allow to you change the fan settings.

2. If it runs cooler, you may end up with a bit more oil trying to return to the combustion cycle through the PCV system. That can be alleviated (and reduce TB sludge as well) by installing a catch can. I can't put a catch can on my 2007 but for those of you who can tap into the PCV return lines to the intake manifold, get yourself one!
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Old 07-14-2010, 09:40 PM
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I have installed a 180 Tsat on my 07 Ram and I notice it runs cooler now. It is a little better of a ride but nothing crazy. I think the stock Tsats are like 200 or 220 something like that, but dont quote me on that haha.
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Old 07-15-2010, 09:22 AM
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..I beleive stock is 203 degrees..
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Old 07-18-2010, 10:48 PM
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Quote:
Originally Posted by chefred112 View Post
..a big worry with the guys who mod is runnin lean, pre-detonation an knocking...using a lower temp tstat will add fuel... one less worry when I'm out driving around a little bit on the spirited side..
Hey Red how does the Tstat factor into how much fuel the engine gets??
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