thermostat

[Mel S.]

What is the degree for the thermostat that is used in 1970 350 LT1?

[Joe L.]

Re: thermostat

What is the degree for the thermostat that is used in 1970 350 LT1?

Mel------


The original thermostat for the application mentioned was 195 degree. I recommend replacing with a 180 degree.

[Mel S.]

Re: thermostat

That is what is in it.
Thanls

[Joe L.]

Re: thermostat

That is what is in it.
Thanls

Mel------


Then someone replaced it previously, either on purpose or by mistake. All other 1970 Corvette engines were originally equipped with a 180 degree thermostat. The LT-1 was the exception. Why? Well, the LT-1 was the only 1970 Corvette engine that was equipped with the air injection reactor (AIR) exhaust emissions control system. GM always specified a 195 degree thermostat for AIR-equipped applications.

[David S.]

Re: thermostat

I run this in my 70 LT1. Actually in all my cars. These are well worth the money.

https://www.amazon.com/Milodon-16400-High-Degree-Thermostat/dp/B000COO20I

Best,
Dave

[Joe L.]

Re: thermostat

I run this in my 70 LT1. Actually in all my cars. These are well worth the money.

https://www.amazon.com/Milodon-16400-High-Degree-Thermostat/dp/B000COO20I

Best,
Dave

Dave------


This is the "Robertshaw"-type thermostat. I use and recommend this type, too. However, I use only a 180 degree version. Using a 160 degree can result in too wide a temperature swing. A corvette cooling system can usually not maintain a 160 degree temperature except in unusual conditions (e.g. very low ambient temperatures, long downhill grades, etc.).