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As I work to prepare for my cleveland buildup, I'm discovering I drove a 351C for years with the wrong thermostat!! (it always ran on the warm side)
335 series engines with the brass plate under the thermostat require a special thermostat that closes the hole in the brass plate off when warmed up...otherwise some coolant circulates continuously in the block.
Time marches on, and motorcraft lists the correct thermostat on their website, but when you try to order it, youre told the thermostat for a windsor is interchangeable and thats all you can get.
Its always something.
335 series engines with the brass plate under the thermostat require a special thermostat that closes the hole in the brass plate off when warmed up...otherwise some coolant circulates continuously in the block.
Time marches on, and motorcraft lists the correct thermostat on their website, but when you try to order it, youre told the thermostat for a windsor is interchangeable and thats all you can get.
Its always something.