Quote:
Originally Posted by rkleypas
Took my car to a local rod shop. They hooked it up to an air lift and they have all of the air out of the coolant system now. They also drilled a small hole in the thermostat? Not sure what that will do, but he said it is running nice and cool now. Thanks for all the help. You guys prevented me from pulling my water pump and doing a ton of unnecessary work.
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My question is --- did they find air in the system?? From your post I assume they did...
So the small hole in the thermostat was a trick that even some OEM manufacturers did ("high performance thermostats") - but in "most" older motors (SBC and BBC etc) the thermostats where the high point in the system... AIR wants to rise.
The LS thermostat location is LOW.... so unless the air was pushed thru the system to the thermostat - it would be pretty useless IMHO - but certainly doesn't hurt anything.
Regardless of all that -- I'm glad you think you now have it sorted out and it wasn't that big of a deal.