Quote:
Originally Posted by Hib Halverson
Flow is only one variable which affects cooling. Others are: ability of the coolant to accept heat from the combustion chamber walls and the ability of the radiator to transfer heat to the atmosphere. Yes......I agree with you on the other variables  but on this one variable of thinking a cooler thermostat will run the engine cooler at ALL temperatures is a myth since both the 160 deg thermostat and 180 deg thermostat function the same at engine temperatures over 185 deg F. (It will just take a bit longer to get there using the 160 deg Thermostat).
Agreed. The practical value of "Drilling" 'stats is a myth. Thank you for confirmation
If Marc "suggests" that, barring any other test data, I'd sure be taking his suggestion as fact. Concur completely 
The "bandwidth" of the water pump's flow is not wide enough. What GM should have done was give the LT5 an all-aluminum radiator and a higher system pressure. Then the coolant bypass could have been decreased which would have improved cooling at low engine speeds. Yes again but the engine rpm up to 8,000 and the resulting Head Loss in plastic radiators were an issue.....thanks for confirmation again
Well...duh! I would not use the word "duh" as it may be obvious to some but not so obvious to ALL 
See Post 120 - Thermostats, Fans, Radiators and Coolant Filling |
Thank You Hib......
Keep the mice, leaves, plastic bags out of the Radiator area between Radiator, Oil Cooler, and AC Condenser using a debree screen with maximum 1/4 inch spacings. Do install a new Stant 180 deg Thermostat to make sure of maximum functionality of the Thermostat temperature control.
Also......Do install a Marc Haibeck Chip lowering Cooling Fan Operation to 205 deg ON and 200 deg OFF.
And many in HOT climates DO install Fluidyne, Dewitt or other brand Aluminunm multi core Radiators for greater cooling at the higher Engine RPMs.
(
Run in sixth gear at 55 mph for a while on a relatively warm day, then shift to fifth and watch the Temperature gage drop)
See Post 120 - Thermostats, Fans, Radiators and Coolant Filling