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**Gregski** · 01-12-2018, 01:43 AM

so here are the results of the third test drive, this one is for all of you who suggested swapping to a 180* thermostat

180 Thermostat, running 50/50 water coolant mix, still 12 degrees initial timing

as you can see we were averaging in the high 190s, here I caught it at 199* F degrees this only proves now we are masking the problem instead of fixing it, how do I know that?, well my '74 truck is running a 180* thermostat and it operates at you guessed it 180* degrees year round

01-12-2018, 01:43 AM	#48
Gregski Post Whore Join Date: Aug 2014 Location: Sacramento, CA Posts: 10,810	Re: 71 350 running hot coolant backup up problem - Test #3 so here are the results of the third test drive, this one is for all of you who suggested swapping to a 180* thermostat 180 Thermostat, running 50/50 water coolant mix, still 12 degrees initial timing as you can see we were averaging in the high 190s, here I caught it at 199* F degrees this only proves now we are masking the problem instead of fixing it, how do I know that?, well my '74 truck is running a 180* thermostat and it operates at you guessed it 180* degrees year round Attached Images