Small Block in an early A - how much room for a fan?

halfafish said

I'm gathering parts to put a small block in a 64 Valiant. For anyone who has this combo, can you give me a measurement for how much depth you have for a fan, from the water pump flange to the radiator? I'd like to run a clutch fan but I don't have a way to measure this ahead of time.

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Are you running the early (short) cast iron water pump or the later (longer) aluminum pump?
And what radiator? Some of the newer aluminum radiators are notoriously thicker than the factory radiators, and have mount brackets that space the radiator a considerable distance from the yoke. And even the factory radiators can vary in thickness a bit.
If it will be comparable, I can get you a measurement tomorrow of a late LA water pump to a factory '70 radiator in a '66 Dart.