Toyota F engine

The Toyota F series engine was a series of overhead valve inline six-cylinder engines that Toyota produced from November 1949 to 1992. The engines are known for strong torque at low engine speeds, massive cast-iron blocks and heads and high reliability, and the F had one of the longest production runs of any Toyota engine. All F engines use overhead valves worked by pushrods from a gear-driven camshaft low in the engine. Development began in December 1948 as a largely bored-out version of the earlier Type B engine, with lightweight alloy pistons and better lubrication, and the cylinder head and combustion chamber derive from the Chevrolet L6 Stovebolt engine. It first went into the 1949 Toyota BM truck, called the FM, and gained fame as the Land Cruiser engine.