* Ford Model B 4-cylinder: The top speed was generally considered to be around 45-50 mph. This is a very rough estimate and achieving this speed would likely have required ideal conditions.
* Ford Model B V-8: Ford didn't produce a V8 Model B. The Model B was a 4-cylinder car. The V8 engine came later in the Ford V8 (1932-1934) which was a *different* model line. The top speed of the Ford V8 was noticeably higher, likely in the range of 60-65 mph, again depending on the conditions mentioned above.