“Correct” fan belt doesn’t fit

[deuce lover]

As 35fordtn stated,you need to source one.You might start by taking a circumference measurements (with gen at bottom of intake and at the top) at the pulleys edge . From that you can find the belt that will work.

Here is a chart that might help.Disregard what I circled in blue,that was for my application,36 engine in a '33.Took me 3 attempts to get it right because I used an alternator conversion.