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Discussion Starter · #1 ·
Does anyone know the AN -size for the HPOP ports on the engine heads. If memory serves my right it's a boss -6 (O-ring, 3/8) but I'm not sure.

Also anyone know if there is an oil return port from the engine valley that is just plugged? I need a free flowing oil return to the engine and would rather not use the valve cover filler. Thanks
 

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#5 O-ring boss
 
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