It was replaced by the newer MEL engine for car applications in 1958, and was gradually replaced in heavy-duty truck applications by the larger Ford Super Duty engine, which had also been introduced in 1958.
It was replaced by the newer MEL engine for car applications in 1958, and was replaced in heavy-duty truck applications by the FT (330,361,391) engines starting in 1964 until 1990. Larger trucks used the Ford Super Duty engine, which had also been introduced in 1958.