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Does the LS1 have "water jacket drain plugs" on the side of the block so all coolant can be drained out of block before pulling heads and getting coolant everywhere?
 

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If you remove the thermostat housing enough should drain out to allow you to remove the heads without getting coolant everywhere. You won't get it all out. There are plugs on the side of the block but I don't know anyone who has removed them.

Chas.
 

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Discussion Starter #3
Thanks for the reply
 
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