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Bruce Lancaster · 11-08-2016, 02:26 PM

Car pumps are the same '37-48 and have single sheave pulleys. Truck pumps (big truck, not pickup) have double sheaves that re close together and are internally different from passenger/commercial with different bearings and seals. Bus pumps are triple pulley...bu I don't think I've ever seen one!

11-08-2016, 02:26 PM	#11
Bruce Lancaster Member Emeritus Join Date: May 2010 Location: Madison, NJ Posts: 5,230	Re: Flathead show and tell what year is it? Car pumps are the same '37-48 and have single sheave pulleys. Truck pumps (big truck, not pickup) have double sheaves that re close together and are internally different from passenger/commercial with different bearings and seals. Bus pumps are triple pulley...bu I don't think I've ever seen one!