I ran across the same issue with my ‘59 235. There are two different distributors but not for the same year. Early ones (short cap) were for the low pressure 216 and same year 235’s. Later ones (tall cap) were for the high pressure 235 and 261’s.

One of our own ‘bolters “Pre ‘68 Dave” is an expert on these Stovebolt engines and has a website that show the differences in the distributors thru the years these engines were made.
Here is that list.


Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
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