Freeze plugs at the back of the engine?

freeze plug

Newbie
I have 2 leaky freeze plugs on the side of the block (rusted out), and are wondering if there are any at the back of the engine block? Towards the gearbox

401, Lesabre -60 (the engine might be a -63)

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I am not super familiar with the Nailhead blocks but usually engines do not have freeze plugs on the back of the block other than the cam tunnel. The heads often have freeze/well plugs on the front/back face. Those can corrode out and leak as well.
Greg
 
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