6.4L 180 T-Stat

[Mongoose9400]

I know a few guys have swapped a 180 t-stat in on the WK2 and I had a few questions.

1) It's still the same part number as the 6.1L correct?

2) How does it fit on the WK2? IIRC with the WK1 the t-stat was a tight fit and trimming it helped.

3) What brand is recommended?

4) Did you see any improvement? Any guys running a tune with the 180 t-stat yet?

[divette]

Felpro #35857 sealing
CST #302-180
all as in WK1

[MTGOAT]

swapping to a 180 * stat? what comes stock on this motor? My LS2 has a 186* degree stat stock and guys swap down to a 160 * with no issues at all... I thought i noticed that the temps run a bit higher on this motor. I think I saw 216* or so the other day.

[barish93]

I've seen mine get up to 233 before.

[MTGOAT]

Originally Posted by barish93

I've seen mine get up to 233 before.

Yikes! this is my first MOPAR motor but that seems very high... I would be interested to see what would happen if it runs at a temp closer to 160-170* it works well for the LS motor anyways.

very interesting...

[Bosshogg]

I swapped mine out for the 180 and it runs around 180-185 pretty much all the time!!!


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[ekaz]

Originally Posted by MTGOAT

swapping to a 180 * stat? what comes stock on this motor? My LS2 has a 186* degree stat stock and guys swap down to a 160 * with no issues at all... I thought i noticed that the temps run a bit higher on this motor. I think I saw 216* or so the other day.

203* from the factory. A 180* is common but tends to throw a code when it gets colder out, nothing major but it does. A few guys have run a 160 or 170 without issues.
The HEMI benefits from the cooler tstat as heatsoak sucks on these. Don't forget to change your fan settings after you change the tstat.

[Helheim]

If you live where it's cold 6+ months of the year is still worth getting the 180?

[steveSRT]

I too am looking at the 180 Tstat swap but am finding conflicting info on them, some are saying the Jet 180 Part # 10183 and others are using Motorad part # 4127 or 4128, which one is the best option to go with?

[ekaz]

Both are the same motorad being cheaper.