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GMC V6 and V12 Engines Engine repair and rebuilding

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  #1  
Old March 4th, 2017, 06:06 PM
wheezer wheezer is offline
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Default Coolant leaking behind the front pump housing

Just bought a 1960 Gmc truck. After taking it out a couple times, coolant is leaking from behind the housing that the water pump fits into. I'm assuming it's a gasket between the block and whatever the housing is called? Since I don't know what the housings called, I'm not sure what gaskets I need. Any help would be appreciated. It's a 305 v6.
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Old March 4th, 2017, 08:57 PM
AZKen AZKen is online now
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Default Re: Coolant leaking behind the front pump housing

If you are sure it's not the water pump gasket it's the timing cover. But replace WP gasket anyway.

http://www.rockauto.com/en/catalog/g...asket+set,5484

http://www.rockauto.com/en/catalog/g...mp+gasket,2148
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Old March 10th, 2017, 06:45 PM
jrmunn jrmunn is online now
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Default Re: Coolant leaking behind the front pump housing

A word of caution. My 64 305E V6 water pump is held on by 1/4" bolts that can be broken (twisted off) while trying to get the gasket tight. I found out the hard way, but stopped when I felt it start to give and had used enough gasket sealant to keep things from leaking.

JRMunn
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