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Old 03-03-2012, 12:59 PM   #31
Rich 5150 69
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Re: S-10 350 Radiatdor Plug

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Originally Posted by Chicago5 View Post
"Whoa, look how tiny that radiator is"! Or, "That's a cute miniature radiator"! That's what I hear from 3 separate mechanics who happen to be Chevy enthusiast. I was also advised the 180* thermostats are best suited for trucks going down the road at higher or at least constant RPM. There is a 160* high-flow thermostat at O'Reilly's that would make the size of the radiator less of an issue.

Since the space for the radiator is so tight, do you think it's something where cutting, fitting, fabricating mounts and stuff might come up? I just don't know how to "eye ball" the space without the exact dimensions or even the radiator in my hands. My fingers are tired now, Later.
Tim you don`t want to use a 160 thermostat, that will make your truck run hotter, you`ll want to go to a 190, it gives the coolant more time in the radiator before it opens up again. Unless you want it to run hotter.
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Old 03-03-2012, 08:15 PM   #32
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Re: S-10 350 Radiatdor Plug

OK. I was running around town today and the plug I put in blew out. Put in a different style, but still a push and twist, blew out right before I got home. Nerve racking.
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Old 03-04-2012, 11:11 AM   #33
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Re: S-10 350 Radiatdor Plug

Rich, is this how a thermostat works? (I'll use 190* thermostat) The radiator is moving coolant through the inside of the radiator, keeping the coolant cool. When the coolant reaches 190* , the thermostat opens and the coolant flows through (I don't know what it flows through) to keep the engine close to 190*.

I though about the thermostats and I am confused. The original thermostat was a 190. When I put a 180 in, it ran much cooler. In my mind, not understanding how a thermostat works, the lower the thermostat temp., the lower the number on the gauge would be. So, in my case where there is a tiny radiator, would this still apply?
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Old 03-04-2012, 12:41 PM   #34
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Re: S-10 350 Radiatdor Plug

Tim is this a trans plant engine? the themostat say a 190, will hold the coolant in the block til it reaches 190-192, then it opens up til the cooler water reaches the the thermostat again closing it down, by changing to the 190 it gives it more cooling time in the radiator, in the long haul the coolant will stay cooler longer, with a 160 thermostat the coolant will cycle a lot faster there by gradually getting hotter beyond being able to cool it down. but it also sounds as if you have a very small radiator for your combo. The coolant rotates from top to bottom. Am I making any sense of this ...
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Old 03-04-2012, 07:29 PM   #35
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Re: S-10 350 Radiatdor Plug

Yes and thanks. My neighbor came over (the mechanic with the Nova). He said he has 6 GM 160* thermostats. Said they were for earlier Corvettes. I asked about the thermostats in relation to my little radiator, and what you said. He said he would go with the 160* to keep it cool. Also, he said the radiator is not the original 2.8 L radiator. He guessed a Ford Ranger or an older Mazda. Got charged plenty for a radiator when I first picked it up. I think the priority is replacing the radiator, then, reconsidering the thermostat and fans. So, is the thermostat chosen based on the radiator, how you drive, what you drive? Or is it just basic science like you described? Thanks Rich.
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Old 03-04-2012, 09:24 PM   #36
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Re: S-10 350 Radiatdor Plug

Thats not near enough rad capacity for a 350. You`ll need to look at Champion, then even still a 180 /190 thermostat, you will run warmer in the winter and still cooler in the summer. Even my truck with as much engine room capacity I still run a three row Rad, fan shroud, and six blade fan (fixed) if you decide to go with the champion are you using electric fans with a shroud to fit the rad, you can get one large electric 18 inch that pulls 3,000 cfm thru spal, that is what I use in my coupe.

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