I recently bought a nice 56 Belair that has a strange cooling system modification that I have never seen before. The previous owner drilled and installed a hose on both sides of the engine from the bottom of the block water jacket to the water pump discharge. I assume it was to allow a 3/8" stream of water to enter the block below the number 5 and 6 cylinders rather than flow along the normal route through the front of the block. Is anyone out there familiar with this modification or have an opinion as to why it might have been done. The engine is a small block chevy equipped with Edelbrock aluminum heads. Thanks in advance.
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