* 1955 Ford trucks were equipped with:
* Y-block V8s: The standard engine was the 239 cubic inch Y-block V8.
* Larger Y-block V8s: Optional engines included larger versions of the Y-block, such as the 272 and 292 cubic inch engines.
* The 272 V8: The 272 cubic inch Y-block V8 was introduced in 1956, not 1955. It was initially available in passenger cars, and later in trucks.
To summarize: 1955 Ford trucks had the 239 cubic inch Y-block V8 as standard, with larger Y-block V8 options available. The 272 V8 was introduced in 1956.
