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Engine block drain size?

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SS/GN

Well-Known Member
Joined
Jun 30, 2005
Messages
2,890
What is the size of the coolant drains in the side of the block?I would like to put rad drain valves in to empty the antifreeze when I do a sevice on the cooling system:confused:Thanks in advance

Kevin
 
not positive, but i think they are 1/8" npt.....why not just flush the coolant completely out with engine running?
 
Thx

Thanks alot muchly appreciated.:biggrin:

Kevin
 
Those plugs are PITA to get out with engine in car. May want to heat them a bit. I've rounded my share:smile:.
 
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