Blown Headgasket on a 4.8?
12-27-2011, 05:47 PM
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Blown Headgasket on a 4.8? I have a 2000 4.8 in my Sierra which had always used a little coolant up until recently where it turned into a gallon every 2 days, couldn't find the water going anywhere, thought it was a little run off from the water pump replacement. When i went to change my oil it was apparent the head gasket had been leaking for a long time.
I pulled off the passenger head and it was rough looked like there was a small fracture in the gasket between the pushrod galleys and coolant jacket up front. I have included pics, the motor has the milky sludge build up all in, just debating on if a gasket replacement will be sufficient for this motor to survive for more years.
I noticed when comparing the old gasket to the new one on the old one in the left corner the coolant hole is not there, but in the new felpro gaskets it is on both of them, new design? The old gasket was eaten to hell from the dexcool I assume.
Thank you for the help.
I pulled off the passenger head and it was rough looked like there was a small fracture in the gasket between the pushrod galleys and coolant jacket up front. I have included pics, the motor has the milky sludge build up all in, just debating on if a gasket replacement will be sufficient for this motor to survive for more years.
I noticed when comparing the old gasket to the new one on the old one in the left corner the coolant hole is not there, but in the new felpro gaskets it is on both of them, new design? The old gasket was eaten to hell from the dexcool I assume.
Thank you for the help.
