Select "print" from your browser's "File" menu.

Back to Post
Print Topic

Username Post: Engine Temperature
"7th Year" Silver Supporting Member
Posts 1805
06-06-21 04:30 AM - Post#2821200    

The cooling system should basically maintain the coolant temp at the thermostat setting (180F, for example) at forward speed (25 mph, or so). At idle/traffic; add about 10%. But the system should return to 'normal' when forward speed is resumed. Temps look mostly normal under the conditions.

A 50/50 coolant mix at 15 psi does not boil until about 265F.

The GM 'idiot' lights did not start to 'illuminate' until around 235F.

A 180F thermostat is recommended for cast iron cylinder heads; 190F for aluminum.

Ignition timing impacts temps. You may 'cool' a little by checking.

Here's a little reading that may be helpful:


Print Topic

FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.331 seconds.   Total Queries: 14   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 10:03 AM