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Bruce Lancaster · 06-18-2013, 10:28 AM

The short crank 24 stud was '38 only...the long crank came in to support the low mounted fan in '39. Short can be distinguished because nose of crank is close to flush with front of front cover. Also, it would normally have a single row pulley with no snout on pulley, crank nut right back against pulley face. A '39 up with single sheave has a tubular extension on pulley moving the nut out front more.

06-18-2013, 10:28 AM	#16
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: 1938 Ford 221" crank shaft The short crank 24 stud was '38 only...the long crank came in to support the low mounted fan in '39. Short can be distinguished because nose of crank is close to flush with front of front cover. Also, it would normally have a single row pulley with no snout on pulley, crank nut right back against pulley face. A '39 up with single sheave has a tubular extension on pulley moving the nut out front more.