"Ah... So 235's had more than one flywheel clutch surface spec?"
Since 1941?
Any flywheel since then would fit any 235 (I think).
You might never know what year/engine your flywheel is out of. It could be from most 216s (maybe any 216, I think), any 235, or any 261.
That is why Wrenchbender early-on above suggested: "Usually you need to pull it to get the right one."
And later on: "You have to use the size that the flywheel is designed for."
This is what we all have to deal with - you know know what size you need until you know the actual size you have in your truck. Ain't life fun?
