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Old 03-24-2013, 08:32 PM
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SBC 195 degree Thermostat

In my truck with a with a built 350 SBC, would it be good to run a 195 degree thermostat, and is it likely to cause detonation? I've been reading about how it may run a bit more efficient with a 195 T stat.

Thanks guys.

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Old 03-24-2013, 09:57 PM
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depends on your compression ratio, iron/aluminum heads, octane of fuel, and lots of other stuff. my 350 loves 195*, it really rockets up. i also have to keep premium fuel in it and if it sits too long i have to put additive in the fuel or it will try to run backwards when i shut it off. i say try it out and see what happens. its not like its going to blow up and a t-stat is under 20 bucks. i'd turn the timing down a couple degrees just to be safe tho.
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Old 03-24-2013, 10:14 PM
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Thanks for the help, here are the specs on my motor, maybe that can help with recommendations

350 4 Bolt Main .040 Over
Scat forged I beam rods
Keith Black flat top pistons 4v reliefs
Moly rings
World Sportsman II heads 2.02 valves and 64cc chambers
Edelbrock performer rpm intake
Holley 750 carb
1 7/8 longtube headers
Lunati Bracket Master II Cam 300 duration
Crane Valve springs
Crane roller rockers
Comp Cams double roller timing set

Also I run 93 octane fuel.
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Old 03-25-2013, 06:50 AM
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I'd try it, it is defiantly a tuning tool.... Heat is power...

My Pontiac 462 likes the 160 and runs better on 89 octane then having a 190 with preimium.... I had to experiment with it though...
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Old 03-25-2013, 10:46 AM
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My compression is around 10:1, I think. I'm thinking I may go ahead and try one of the Stewart hi flow 195's.
I just hope it doesn't cause any detonation.
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Old 03-25-2013, 11:26 AM
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I'm getting a bit confused, I was going to buy a robert shaw t stat, but you supposedly can't use them with a stock style water pump.

So, what about Stant, are they good?
I was looking at this one.
Stant Thermostats 431-14218 - SummitRacing.com
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Old 03-25-2013, 11:37 AM
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Also, this stant is suppose to be better, but it's also cheaper.
Stant SuperStat Thermostats 431-45358 - SummitRacing.com
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Old 03-25-2013, 12:38 PM
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I had trouble with both Mr Gasket and Robert Shaw pill style thermostats.. I ended up pitching all that expensive junk and using the regular old Stant t-stat..

I get the smallest drill bit I have in my box and drill one hole through the stat.. Looks like Stant does a similar thing with the V notch..
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Old 03-25-2013, 05:55 PM
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Thanks, I was actually looking at one of the Mr. Gasket hi flows, but you wouldn't recommend them?

The Stant SuperStat is cheap, but if that's a good one, I can just go ahead and get that.
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Old 03-26-2013, 12:04 AM
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180 - 195

Quote:
Originally Posted by fastnloud View Post
In my truck with a with a built 350 SBC, would it be good to run a 195 degree thermostat, and is it likely to cause detonation? I've been reading about how it may run a bit more efficient with a 195 T stat.

Thanks guys.

From experience I tried the 160, but a 180 or 195 ran smoother and it's better for the oil so it can burn off contaminates , condensation in your oil. Oil likes higher temps anyway.....An efficient radiator will keep a steady temperature that helps too.






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Old 03-26-2013, 06:52 PM
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Thanks, I think I may try one of the Stant SuperStat 180's.
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Old 03-29-2013, 08:22 PM
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my motor is almost the exact same specs as yours except i run a comp cams thumpr. i have to run 93oct or i get pinging bad. try the hotter t-stat and drill a small hole for bypass. a regular mr gasket should work fine for the experimentation. hotter is more power and if your radiator can keep up you should be happy with the results
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