Overheating issues, please help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Old65C10 · 10-06-2022, 01:50 PM

I picked up this 65 C10 a while back. When I got it, It would over heat.
I figured this was a head gasket and I ordered the parts. I just got around to doing the head gasket and I now need the truck to run.
I replaced the head gasket, thermostat, inspected the radiator and the water pump. I can find no issues.
However, the truck runs for 15-20min and overheats. Is it likely that the block or head is cracked? I do not own a pressure tester or a CLT (Compression leak down tester)
I have found anther engine, supposed to be good, but I would like to know if this original engine is good or bad. Any way to know?
Any suggestions would be great.

10-06-2022, 01:50 PM	#1
Old65C10 Registered User Join Date: Jun 2018 Location: Selah Wa Posts: 68	Overheating issues, please help I picked up this 65 C10 a while back. When I got it, It would over heat. I figured this was a head gasket and I ordered the parts. I just got around to doing the head gasket and I now need the truck to run. I replaced the head gasket, thermostat, inspected the radiator and the water pump. I can find no issues. However, the truck runs for 15-20min and overheats. Is it likely that the block or head is cracked? I do not own a pressure tester or a CLT (Compression leak down tester) I have found anther engine, supposed to be good, but I would like to know if this original engine is good or bad. Any way to know? Any suggestions would be great.

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