What is a 351 modified 400 engine?
What is a 351 modified 400 engine? 351 Modified It's based on the 400 Modified engine (see note on nomenclature in the opening paragraph), which was essentially a 351C with a longer stroke. Unlike the 351C however, the 400 blocks had the bellhousing bolt pattern of 385-series big blocks. It also had a higher deck height to accommodate the longer stroke. Is the 351C the same as the 400? Most Ford enthusiasts are well aware of the 351 Cleveland engine, and its short, but well known, history. However there is confusion regarding the 351M and 400 engines. The 351M and...