Overheating - Team Camaro Tech
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post #1 of 6 (permalink) Old Jun 5th, 01, 06:36 PM Thread Starter
 
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I have a 67 Camaro, with a fairly hot 350. Just had the radiator changed from an old 2 row to a new 3 row. Also had the thermostat changed from a 160 to 180 (thought I was going from a 195 down to a 180). Car runs around 195 around town, but on the highway gets up to around 210. Should I put a 160 back in an effort ot cool it down or leave the 180 in. I have asked around and keep getting conflicting stories. Car has 4:11 rear end.
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post #2 of 6 (permalink) Old Jun 6th, 01, 01:54 AM
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Steven
 
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With the 4.11 rear, you are turning quite a few rpms on the highway. Read your plugs and make sure that you are not running too lean ... also, check for any kind of vacumm leak which could also make you run lean...
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post #3 of 6 (permalink) Old Jun 6th, 01, 07:57 AM
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Have you changed anything else from the 2-row setup you had before? How did it behave before the radiator change? Are you using the stock shroud and fan/clutch? Lotsa questions, but need to understand what you had before and how it worked, to compare against what you have now.

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post #4 of 6 (permalink) Old Jun 6th, 01, 08:22 AM
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The rear gears don't affect the cooling. I have the same setup. JohnZ has posted many good suggestions which are good reading from a search. Let's start with your basics and we'll get you there.

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Rick Dorion
69 RS Conv,355,M20,4:10
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post #5 of 6 (permalink) Old Jun 6th, 01, 09:38 AM
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Steven
 
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My reference to the rear gears was actually a reference to engine speed ( rpms ) . At highway speeds, you should have enough air flowing through the radiator to cool it properly. A lean buring engine will run hotter than a richer burning engine... I suggest looking at this because the posting implies that over-heating is not a problem at street stop/go driving...
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post #6 of 6 (permalink) Old Jun 6th, 01, 05:43 PM
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The religion of JohnZ has taught us that overheating at speed is a flow problem as opposed to overheating at stop which is a air movement problem. Also, lower stat open temp will not reduce overall temp.
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