Draining coolant from block
Thread Starter
Joined: Oct 2007
Posts: 446
Likes: 1
From: Oakland, California
Draining coolant from block Hi guys, I'm replacing the head gaskets after finding oil in the coolant/radiator. I also found what appears to be coolant in the power steering resovior. I want to drain all of the coolant from the block and would like to know if there is a way to do so now that I have the heads of? Is there a plug that can be removed, or should I do the process described in some threads that involve removing thermostat and opening the drain ****, etc... Once I put the engine back together?
Thread Starter
Joined: Oct 2007
Posts: 446
Likes: 1
From: Oakland, California
Thread Starter
Joined: Oct 2007
Posts: 446
Likes: 1
From: Oakland, California
I'm going to check those areas. I want to get all of that oil out of he water jackets and radiator. I hope I can get to them though since its tight space in these f-bodies.
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Verdad Gallardo Thread Starter
Joined: Oct 2007
Posts: 446
Likes: 1
From: Oakland, California
TECH Fanatic
Joined: Jun 2011
Posts: 1,343
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From: Katy, TX
also, keep in mind there are 2 oil passage plugs next to the cooling jacket (under cylinders #1 and #7). These are also 8mm allen plugs and look the same as the coolant plug under #8. Don't confuse them!
Unless something is seriously wrong with my LS1 block, there was a drain plug for the coolant under #8, had to remove the starter to get to it. However, the 17mm plug on the drivers side of the block was under #1 on my block. I just undid everything tonight to drain the entire cooling system. I'm pulling the heads off to check for a crack or head gasket on the even bank so I wanted all the water or coolant out. I didn't see any other drain plugs on either side for oil. I wish there was.
