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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 08-31-2013, 01:42 PM
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Question 180 degree thermostat

Installed a Duralast 4128 180 degree thermostat. Whats the normal coolant temperature range after installing one compared to the stock thermostat? I'm stall getting temps in the 240's
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Old 08-31-2013, 02:10 PM
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Should be around 185º

I used a Jet 10183 (since 2010), never see temps over 190º
I believe stock is around 210-220, cant recall
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Old 08-31-2013, 02:16 PM
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You most likely have air in the system. Try squeezing the air out of the upper radiator hose. I had the same problem. Mine runs 185 to 190 then back to 185 all the time.
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Old 08-31-2013, 04:32 PM
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Quote:
Originally Posted by jerseymike View Post
You most likely have air in the system. Try squeezing the air out of the upper radiator hose. I had the same problem. Mine runs 185 to 190 then back to 185 all the time.
Had some air in it . Can't get it any higher than 194 now before it starts going back down.


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Old 08-31-2013, 04:41 PM
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Your welcome. Yea I like it running at 185. Makes me feel safe with it that cool and helps the motor to run a little rich to compensate for CAI, headers, etc. Also the oil will be cooler, usually around 195 to 200.
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Old 09-01-2013, 01:44 PM
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how is your mpg after changing it ive seen a lot of debates over this I know on my old ls1 when I put a 180 in it it helped mine a little
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Old 09-01-2013, 01:46 PM
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Quote:
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how is your mpg after changing it ive seen a lot of debates over this I know on my old ls1 when I put a 180 in it it helped mine a little
Haven't driven it enough yet. But before with the HemiFever 93 tune I was in the low 16's.
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Old 09-01-2013, 03:16 PM
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what did you set you efan on/off settings at?
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Old 09-01-2013, 03:26 PM
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what did you set you efan on/off settings at?
Honestly I don't know, left that to Hemifevers tune. But the fan seems to come on rather fast
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Old 09-01-2013, 08:05 PM
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As long as it doesn't come on before 180. That way the tstat fully opens. 194 isn't bad by any means but it should still stay in the 180s depending on your fan settings.
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