Question: what is the difference between ford 2v or 4v?
Answer: What is the biggest difference between the 2V and 4V heads? ... A: Starting with the basics, 2V heads are designed for use with a factory 2-barrel carburetor option (2V = 2 venturi), while 4V heads came on one of the five Ford 351C engine configurations that came with a 4-barrel carburetor (4V = 4 venturi).