With a water pump relocation plate and a 216 water pump on a late 235 you should not have any fan and pulley clearance issues.
The upgrade will help you keep cool better too.

Some searching in the engine and drivelines section will show you all you need to know about the adapter plate.

Have you said what model truck this is, and what year model engine?

Grigg

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-