Three were three heads made for the 14L block that I’m aware of and all will work.
The 1927 165 Cubic inch 14L, the 1929 185 Cubic Inch and the 1929 15L.
The factory sales brochures rate the 14L engine with 14L head at 43 horsepower and the 14L block with 15L head at 50 horsepower.
Just a quick update. Ray and I worked out a deal for a 15L head I had gotten from Dave Schulte a couple of years ago. Ray should have received the head yesterday :)
Tom
Where Are You From? Grand Junction CO
Do You own a car built by Durant? 1926 Star Coupe, 1929 Durant 663 and 666