Because 1937 used a carbon throwout bearing(last year for this), the pivot location for the clutch fork is not in the correct spot for a fork used with the ball bearing throwout bearing needed for the clutch that bolts to a 235.
You need a 1938-46 bellhousing, or maybe modify the 37 bellhousing.
You will also need to change the transmission front bearing retainer to except the 1938 and later throwout bearing.


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