What is the difference between a 351 Windsor and 351 Cleveland Ford engine?

The Windsor is a small block, basically an enlarged 289. The Cleveland is a big block, more high performance. You can tell the difference from the outside by looking at the valve cover. The Cleveland has 8 bolts securing it down * the Windsor has 5. Also the thermostat cover bolts to the block on a Cleveland and to the intake on a Windsor.

Neil