Hottest thermostat in the 5.7L

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Oct 15, 2013 | 08:23 PM

ccgRAMrod

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Hottest thermostat in the 5.7L

What is the hottest thermostat you can run in the 5.7L for better mileage? Has anyone tried this?

Oct 15, 2013 | 08:57 PM

stenerson

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Isn't the stock thermostat 203?

Oct 15, 2013 | 09:17 PM

ccgRAMrod

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Quote:

Originally Posted by stenerson

Isn't the stock thermostat 203?

I'm not sure. I put a185 in a few years ago and was thinking off going the opposite way now. Trying to get more mpg out of it if it's possible.

Oct 16, 2013 | 07:53 AM

MikeHTally

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Changing the 'stat isn't going to affect mileage enough to warrant even that tiny expense. However, running the engine past its design limits can certainly affect your wallet.

Oct 16, 2013 | 08:21 AM

ccgRAMrod

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Quote:

Originally Posted by MikeHTally

Changing the 'stat isn't going to affect mileage enough to warrant even that tiny expense. However, running the engine past its design limits can certainly affect your wallet.

So in your opinion what stat temp would you run?

Oct 16, 2013 | 06:28 PM

MikeHTally

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I used a 180 for a while, but I went back to the 203 (not enough heat in the winter).

Oct 16, 2013 | 06:38 PM

Gone Fishin

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From: Bristol, IN

yup----stay stock, thats what its designed for

Hottest thermostat in the 5.7L

Hottest thermostat in the 5.7L

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