DICTIONARY OF AUTOMOTIVE TERMS - "Fh"

F head
F-head
F head engine
F-head engine
F-head engine

F-head engine

An engine having one valve in the Head and the other in the Block. The position of the valves create an F shape in combination with the Combustion chambers. Compare L-head engine where both valves are in the block and none in the head. Compare the I-head engine where both valves are in the head and none in the block.
Also see

FHP
Acronym for Friction horsepower
FHWA
Federal Highway Administration: The U.S. federal agency of the department of transportation responsible for the administration of federal highway funds. FHWA coordinates highway transportation programs in cooperation with states and other partners to enhance the country's safety, economic vitality, quality of life, and the environment. Major program areas include the Federal-Aid Highway Program, which provides federal financial assistance to the States to construct and improve the National Highway System, urban and rural roads, and bridges. This program provides funds for general improvements and development of safe highways and roads. The Federal Lands Highway Program provides access to and within national forests, national parks, Indian reservations and other public lands by preparing plans and contracts, supervising construction facilities, and conducting bridge inspections and surveys.