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Old Jul 13, 2013 | 12:23 PM
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What's the normal running temp for a 327/350hp?
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Old Jul 13, 2013 | 12:30 PM
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Originally Posted by maggiesadie8525
What's the normal running temp for a 327/350hp?
A good average would be 180* to 190*....using a 180* thermostat and infrared gun on the thermostat housing at temp. Trying to using your temp gauge coupled with todays' temp sender's is highly inaccurate.
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Old Jul 13, 2013 | 12:34 PM
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Mine runs at 180 at speed in Houston summers with the A/C off, creeps to 205-210 at stoplights with the A/C on.
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Old Jul 13, 2013 | 01:33 PM
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Originally Posted by RestoMike
A good average would be 180* to 190*....using a 180* thermostat and infrared gun on the thermostat housing at temp. Trying to using your temp gauge coupled with todays' temp sender's is highly inaccurate.


What we are saying is it depends on the thermostat installed and how efficient your cooling system is. Use the IR gun and calibrate your gauge to see what you are ACTUALLY running at.

A 180 therm is where it STARTS to open..so the car will run a lil hotter that that. Hope for 190-200.
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Old Jul 13, 2013 | 02:42 PM
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I have a 160* thermostat and the gauge looks to be a hair over that.
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Old Jul 13, 2013 | 04:00 PM
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Here's one more and many times over looked crucial item when developing an efficient cooling system.............a known good radiator cap. If your cap won't pressurize to spec....say 15lbs, your system will never cool as efficiently as it could. Whether you have an original cap, after market or repro cap be sure it meets spec. This means pressure check your cap of choice.
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Old Jul 13, 2013 | 04:43 PM
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Originally Posted by maggiesadie8525
What's the normal running temp for a 327/350hp?
I would advise you to look in your owner's manual to see what "design normal" is.

It may be totally different than what normal is with 50 years of wear/tear on an OEM cooling system will produce.
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Old Jul 13, 2013 | 06:40 PM
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Thank you all, have a great weekend.
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