Engine temp ?? - Team Camaro Tech
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post #1 of 19 (permalink) Old Jun 3rd, 19, 10:16 AM Thread Starter
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Engine temp ??

i'm running a 180* t-stat and so far after a couple trips around town, idling at red lights, even had to wait for a big group of school kids to cross the road i'm staying 185*-195*ish.. sound ok to you guys?
Ran it for an hour yesterday on some good twisty roads and hit it pretty hard and still stayed around same temps.

'68 Camaro 454, 4sp
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post #2 of 19 (permalink) Old Jun 3rd, 19, 10:41 AM
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Re: Engine temp ??

nothing wrong with those temps
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post #3 of 19 (permalink) Old Jun 7th, 19, 04:46 AM
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Re: Engine temp ??

Factory stat was 195*
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post #4 of 19 (permalink) Old Jun 7th, 19, 08:13 AM
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Re: Engine temp ??

I am running a 160* thermostat and my temperature stays at 175*- 180*
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post #5 of 19 (permalink) Old Jun 7th, 19, 08:28 AM
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Re: Engine temp ??

And remember, gauges, sensors, etc., are not calibrated - do you see a cal sticker?
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post #6 of 19 (permalink) Old Jun 7th, 19, 01:33 PM Thread Starter
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Re: Engine temp ??

Did an 80 mile round trip to the office and a couple side stops, mostly interstate, drove it to lunch.. no issues.. stayed between 185 and 198. Drank 8 gallons of gas
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'68 Camaro 454, 4sp
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post #7 of 19 (permalink) Old Jun 7th, 19, 02:29 PM
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Re: Engine temp ??

10mpg....must be nice


Glad its under control

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post #8 of 19 (permalink) Old Jun 7th, 19, 03:25 PM
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Re: Engine temp ??

My motor runs kind of ragged until it hits 200*. Not real happy below that.

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post #9 of 19 (permalink) Old Jun 7th, 19, 04:50 PM
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Re: Engine temp ??

"'68 Camaro 454, 4sp" Cast iron block, cast iron heads, engine temp should be 180 deg/F. and stay there.

What, if any mods to the cooling system, like electric fans, no fan shroud, under drive pulleys, flex fan?

Also, any mods to the ignition timing settings, vacuum advance, mechanical, initial? This can also cause engine heating variations.
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post #10 of 19 (permalink) Old Jun 8th, 19, 11:46 AM
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Re: Engine temp ??

I am not that smart so I rely on books. according to Chilton's motor manual I see no 454 engine for a 68 camaro. maybe there was a misprint . I don't know.
was there a 454 engine for a 68 camaro?
if not there could be several things that could alter the temperature of the above post of 180* and stay there
since there I could find no listing for a 454 in a 68 camaro, one would assume the grill opening, radiator size. size and type of fan and etc. would play an important part on the degree of cooling.
although I am no expert or have worked for GM I believe your temperature readings are ok
THIS IS JUST MY OPINION
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post #11 of 19 (permalink) Old Jun 8th, 19, 12:13 PM
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Red face Re: Engine temp ??

The 454 was introduced in 1970. No first gens stock as a 454. They were 396's and a few 427's !

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post #12 of 19 (permalink) Old Jun 8th, 19, 12:25 PM
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Re: Engine temp ??

If you look at Frank's signature you'll see he has a 454 in his 68.

Al

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post #13 of 19 (permalink) Old Jun 9th, 19, 12:22 PM Thread Starter
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Re: Engine temp ??

Quote:
Originally Posted by allanjs View Post
If you look at Frank's signature you'll see he has a 454 in his 68.
454 std bore, 600 lift hyd roller cam, lifters, rockers, Alum rad, 18" Rev rotation fan, Rev Rotation fan clutch, BB shroud, Rev rotation waterpump as part of the serp belt system,,,,, NOTHING is stock in this thing

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'68 Camaro 454, 4sp
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post #14 of 19 (permalink) Old Jun 9th, 19, 02:40 PM
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Re: Engine temp ??

I'd add to it a 30 percent anti-freeze/70 percent tap water mix. Water conducts heat a lot more efficienltly than anti-freeze, and higher concentrates of A/F only reduce the cooling conductivity of the water by reducing the volume of it i the mix.

As far as tap water, I do not use de-mineralized waters, and that is what most altered waters are. A de-mineralized water is, of course, mineral starved, and will eat minerals, like cast iron, aluminum, gaskets, etc. Even with a sacrificial anode, the level of engine parts erosion is high. Another thing I do is run a very specific type of thermostat, used to be available under the Mr. Gasket, and Robertshaw brands as a "pressure balanced" 'stat. These have a barrel shaped valve in them, instead of a flat plate, which can be forced shut at higher flow volumes.

Your system looks set up nicely, It should work well.
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post #15 of 19 (permalink) Old Jun 9th, 19, 07:45 PM
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Re: Engine temp ??

I would you distilled over tap water. Like he 30% and 50/50 is not ideal for the way most of us keep and drive our classics. 30% will cool better and still yield good corrosion protection and water pump lube.

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