The 250 is in the same family as the 200, making the swap relatively straightforward. Nevertheless, there are some items which need to be addressed in order to make the switch. These comments apply to the swap performed on a 1966 Mustang. Later model Mustangs, Falcons, Fairlanes, and Mavericks may differ in details, but the same items should be considered.

Engine similarities and differences

The 250ci was developed from the earlier 144/170/200ci family of engines. In order to accommodate...
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