The trap of the industrial / motorhome 318-3

inertia said

Some off those heads had extra cooling around the spark plugs, requiring special headgskts IIRC .

Click to expand...

Yes sir. 413 rv has a couple extra cooling passages more than even the 440 rv engine does. Not a big deal I will use the head gasket as a template and drill through the deck of the 440 short block and gasket to make it work.