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Discussion Starter #1
Hey,
Anybody have a part # for a 180 deg thermostat. 06 5.7l Hemi 300c. I am going to be doing a dyno test before and after the thermostat change.

Thanks,
Brent
 

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dyno

dtpracing said:
Hey,
Anybody have a part # for a 180 deg thermostat. 06 5.7l Hemi 300c. I am going to be doing a dyno test before and after the thermostat change.

Thanks,
Brent
Brent,
Go for it and keep us posted -- Thanks !!!
 

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dtpracing said:
Hey,
Anybody have a part # for a 180 deg thermostat. 06 5.7l Hemi 300c. I am going to be doing a dyno test before and after the thermostat change.

Thanks,
Brent
I went though all the bens at the local Advanced Auto Parts in Maryland and i ended up w/stant part#13947 for my 300srt8 6.1. It is an 63 mm stock and the 13947 is a 64mm. I did very little grinnding on the outer edges to make it fit. but here is the kicker, on the 13947 stat u have to cut of the bottom sealing valve. it is copper so it cuts like butter. My car runs at the mark between 0 and 200 when moving now. I did get the fan mod from GSM to. Good Luck
 

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dtpracing said:
Hey,
Anybody have a part # for a 180 deg thermostat. 06 5.7l Hemi 300c. I am going to be doing a dyno test before and after the thermostat change.

Thanks,
Brent
The 180 degree replacement (63mm) thermostat is the Stant Thermostat #13078.


For those who would like a failsafe unit this heavy duty "170" degree European-made stat is a good one (both that I've used run at 176 EVIC degrees, BTW):

Prestone 383-170. Available at Checker / Kragen / Schuck's Auto Parts stores. Made in Germany by Cooper Standard/Robert Shaw.

63.5mm vice stocker's 63mm. Requires small flat blade driver, or similar, to help tuck rubber gasket into receiver due to slightly tighter fit.

Heavy Duty, has brass dog-bone wobbler in air bleed hole. (Orient bleed hole to highest point of the thermostat during install.)

Fail-Safe feature insures thermostat valve moves to full open position in event of a failure.

This unit is more expensive than the 180s have been. It's obviously more heavy duty, and the failsafe feature alone makes it worth the price of admission for me. I paid $16.99 or so in California at Kragen's for the one I bought for CoolVanilla's car at GIFO3 recently, $18 & change here in Arizona at Checker for the one(s) I bought to put in mine. It's marginally more difficult to install due to the tighter fit.

GIFO3 showed a gain of 5hp/3tq at the rear wheels on back-to-back 3-run series dyno runs, 170 vs. stock 203 degree stat.

Best to change this one when the motor's not hot as it requires more fingers in the pie to get it seated. ;)
 

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Discussion Starter #5
Excellent info. I knew somebody had done this and I had no luck finding the # on my own. I will have the car in next week and will post before and after dyno results.

Thanks,
Brent
 

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Gary said:
so do the 06's come witha 180 stock?
All 5.7L LX Hemis to date come with a 203.
 
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