Yes, there are at least two different-length throwout bearings for the 216/235/261 clutch/flywheel assemblies.

http://chevy.oldcarmanualproject.com/1929_57chevyparts/57cmpc0151.htm

If you can read the lengths in the Master Parts Book, above, you should be able to see which one is the one you have, and if the other one is long enough to solve your problem.