Hey guys,
I am just about at my wits end here with an overheating issue, on a 1988 5.7 Alpha running on muffs. The drive has been resealed with new water pump assembly, and I have LOTS of water flowing at the thermostat housing connection from the drive. I have checked the thermostat housing itself for any blockages, and installed a new 140F thermostat. The engine circulating pump seems just fine. Both the head and intake manifold gaskets were just replaced and installed correctly. The problem still persists.... I have even removed the thermostat, and it is still overheating badly. I have ample water coming out of the exhaust when it is running, and the exhaust manifolds and risers do not overheat, but the engine itself does... It goes up to 200F after just a few minutes of run time. I have verified this with a laser temp gauge. Running at idle, or 1200 RPM makes no difference.
Thanks for your help!
I am just about at my wits end here with an overheating issue, on a 1988 5.7 Alpha running on muffs. The drive has been resealed with new water pump assembly, and I have LOTS of water flowing at the thermostat housing connection from the drive. I have checked the thermostat housing itself for any blockages, and installed a new 140F thermostat. The engine circulating pump seems just fine. Both the head and intake manifold gaskets were just replaced and installed correctly. The problem still persists.... I have even removed the thermostat, and it is still overheating badly. I have ample water coming out of the exhaust when it is running, and the exhaust manifolds and risers do not overheat, but the engine itself does... It goes up to 200F after just a few minutes of run time. I have verified this with a laser temp gauge. Running at idle, or 1200 RPM makes no difference.
Thanks for your help!
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