| Non gmc thermostat question [message #251705] |
Sat, 07 June 2014 20:18  |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
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Awhile back I installed a Robert shaw type 180 degree thermostat in my 350 Chevy powered 48 ford. This is the same thermostat most of us use in our GMC's . It mostly runs at 180 but when stopping for a light the temperature rises to 240 or more unless I rev the engine in neutral. I figured maybe the thermostat is bad but it opens normally in a pot of hot water? So I tried another new Robert shaw type thermostat. Same problem with the next thermostat. Yes it has a new radiator. I was thinking maybe I need a hi flow water pump as it only has a problem at idle. Today I took the thermostat out and checked it with out a thermostat no more problems when I slow down it stays at 170 to 180 constantly. So the 350 doesn't like the Robert shaw stat for some reason. Has anyone come across this problem with a thermostat? As much as I hate I plan on buying a Stant type thermostat to use rather then the robertshaw type unless someone can recomend a better one?? I'd hate to keep trying different style stats to fix the overheating at traffic lights
Roy Keen
Minden,NV
76 X Glenbrook
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