What would be a good thermostat to run in a 1972 350 chevy? - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

franken · Today, 02:41 AM

"If the operating temp remains the same with a 195 and 180 stat the cooling system capacity is not adequate."

The thermostat has nothing to do with the final temp of the coolant once the engine is warmed up. The thermostat isn't there and has no way to do anything other than restrict coolant flow and allow the engine (and therefore the oil) to get warm quicker.

This is at least the 3rd time in this thread that someone has claimed the thermostat determines engine temp, which is nonsense.

**67 twins** · Today, 05:16 AM

Quote:

Originally Posted by MS66

Where did you get that info? All the V8 C10 trucks I've seen call for 195 as OEM spec.

Straight from my owners manual.

**67 twins** · Today, 05:25 AM

I also found this in the 1967 Truck data book. So apparently they did make changes throughout the years.

MS66 · Today, 08:01 AM

Quote:

Originally Posted by 67 twins

Straight from my owners manual.

Nice, a 1967 owner's manual, haven't seen one of those in a while. Interesting, I like seeing this old stuff, maybe more will post other year manuals for comparison. Would like to find one for my 1968. Thanks for posting that.

"67 twins; Except they didn't. V8s came with 180° thermostats and inline 6s came with 195° thermostats"

The original question is what thermostat to use in a '72 C10 with a 350. The '72 owner's manual states it came with a 195. Pretty sure a good 80% were chunked in favor of a 180 at one point in time. It's all good.

**1970cstblazer** · Today, 08:57 AM

195 was primarily used to lower emissions.

Today, 02:41 AM	#26
franken Registered User Join Date: Jun 2013 Location: Somewhere Posts: 3,094	Re: What would be a good thermostat to run in a 1972 350 chevy? "If the operating temp remains the same with a 195 and 180 stat the cooling system capacity is not adequate." The thermostat has nothing to do with the final temp of the coolant once the engine is warmed up. The thermostat isn't there and has no way to do anything other than restrict coolant flow and allow the engine (and therefore the oil) to get warm quicker. This is at least the 3rd time in this thread that someone has claimed the thermostat determines engine temp, which is nonsense.

Today, 05:25 AM	#28
67 twins Senior Member Join Date: Mar 2019 Location: Herculaneum MO (20 minutes south of St. Louis Posts: 633	Re: What would be a good thermostat to run in a 1972 350 chevy? I also found this in the 1967 Truck data book. So apparently they did make changes throughout the years. Attached Images __________________ 67 C10 283 T5 swapped longbed fleetside = wife's daily driver 67 C20 292 (originally a 250)4speed longbed fleetside w/original wooden bed=my project truck 67 C10 283+.060 (so a 292 as well)T5 swapped longbed fleetside=my DD 72 C1500 Sierra Grande 350 TH350 longbed fleetside=wife's fair weather truck Can you tell we are fans of longbed fleetsides & 67s Chris

Today, 08:57 AM	#30
1970cstblazer All stock and staying that way Join Date: Jul 2003 Location: Elkland, PA Posts: 1,576	Re: What would be a good thermostat to run in a 1972 350 chevy? 195 was primarily used to lower emissions. __________________ 1970 K/5 Blazer CST 4WD, Medium Bronze, 93k ACT. miles, 350, 4 speed, rear positraction, 16.5" x 8.25" HD wheel option, tilt, tach, vacuum, AM/FM, manual throttle...Dad ordered and purchased new 4/70. Currently frame off restoration finally getting close to completion.. 1972 Cheyenne Super 20 2WD, DK Blue/White, 90K ACT. miles, 402, TH400, 4.10 open, tilt, tach, vacuum, A/C, AM/FM, manual throttle.. A mostly original paint never rusted Texas survivor... 2017 Sierra 1500 SLT 4WD, Black, 45k miles, 5.3, 6L80E, 3.42 LS, 20" polished wheels, everything but moonroof and 6.2... 2019 Canyon SLT 4WD, White, 62k miles, 3.6, 8L45, 3.23 LS, 18" wheels



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