I started this thread and I'm following it through. Here is my firetruck motor info: Block number:3769925 My Head number:3836850
My research indictes it is a 1959-1962 261 engine. So how and what fan blade fits in a 261? I've got a 14 inch four blade fan for a 216 but doubt it fits a 261. I'd like a bigger fan "if" it was how it came from the factory. Anybody with a 261 measure their fan size?
