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FE water pump pulley
My Kirkham/427 SO/Southern has always run hot at low speeds, like in town, light-to-light and at idle. There's no question it's an airflow/radiator issue. I believe I started with a 7" pulley and, at someone's suggestion, I switched to a 5 3/4". Now I've been told that it spins too fast and is causing "cavitation" and I should go back to the 7" (which, foolishly, I sold on eBay). Before buying another pulley, does anyone have a thought on this? The car has an Edlebrock high flow water pump. Thanx steve
"Never enough time to do it right, always enough time to do it over" |
More important than the diameter of the bottom pulley is the ratio of the bottom pulley to the water pump pulley. We have found that a 1 to 1 ratio works very well on most engines.
Having the water pump pulley over driven will only cause problems at high engine speeds. It will help at lower engine speeds. |
Tom, Thanx. steve
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