The Ford Super Duty engine is a range of

V8 engine A V8 engine is an eight- cylinder piston engine in which two banks of four cylinders share a common crankshaft and are arranged in a V configuration. Origins The first known V8 was the Antoinette, designed by Léon Levavasseur, a ...

s that were manufactured by

Ford Motor Company Ford Motor Company (commonly known as Ford) is an American multinational corporation, multinational automobile manufacturer headquartered in Dearborn, Michigan, United States. It was founded by Henry Ford and incorporated on June 16, 1903. T ...

. Introduced in 1958, the Super Duty engines replaced the Lincoln Y-block V8 (alongside the smaller Ford MEL V8 engines). By the end of the 1970s, the use of the Super Duty engine began to decline in heavy trucks in favor of diesel-fueled engines; in medium-duty trucks, variants of the similar-displacement (but higher-efficiency) 385-series V8s became more commonly used. In 1981, Ford withdrew the Super Duty engine line. Through its production, the Super Duty engines were assembled by Ford in its Cleveland Engine Plant #2 in Brook Park, Ohio.

Design

The Super Duty engine is 90-degree overhead-valve V8 with angled piston decks. The cylinder heads are flat and the pistons are crowned to create a wedge-shaped

combustion chamber A combustion chamber is part of an internal combustion engine in which the air–fuel ratio, fuel/air mix is burned. For steam engines, the term has also been used for an extension of the Firebox (steam engine), firebox which is used to allow a mo ...

within the cylinder bore; the compression ratio is 7.5:1 for all models. They are typically governed to 3400 rpm. Three displacements were available during production: , and ; but however large, the 534 was very much smaller than the Ford GAA all aluminum 32 valve

DOHC An overhead camshaft (OHC) engine is a piston engine in which the camshaft is located in the cylinder head above the combustion chamber. This contrasts with earlier overhead valve engines (OHV), where the camshaft is located below the combus ...

V8 (introduced during WW2), which was the largest displacement gasoline engine ever mass-produced by Ford Motor Company for use in land vehicles. The 401 has a cylinder bore and a stroke of . The 477 shares the 401's stroke with a larger bore; the 534 has this same bore with a stroke of . The early Super Duty has a unique intake system where the intake plenum is connected directly to the cylinder head; all four cylinders pull the air/fuel mixture from a single "log" type port in the head. The engines could "spit" when cold and blow the choke plate out into the

air cleaner A particulate air filter is a device composed of fibrous, or porous materials which removes particulates such as smoke, dust, pollen, mold, viruses and bacteria from the air. Filters containing an adsorbent or catalyst such as charcoal (carbon ...

because of the large port configuration. In later engines this was corrected with a conventional spider-type intake. The

exhaust valve A poppet valve (also sometimes called mushroom valve) is a valve typically used to control the timing and quantity of petrol (gas) or vapour flow into or out of an engine, but with many other applications. It consists of a hole or open-ended ch ...

s are filled with

sodium Sodium is a chemical element; it has Symbol (chemistry), symbol Na (from Neo-Latin ) and atomic number 11. It is a soft, silvery-white, highly reactive metal. Sodium is an alkali metal, being in group 1 element, group 1 of the peri ...

to carry heat from the valve head to the valve stem, which would dissipate it into the valve guide and thus to the coolant in the cylinder head. A marine version of the 534, the "Seamaster", was available from the Seamaster Marine Engine Co. starting in the late 1950s. It was available either

naturally aspirated A naturally aspirated engine, also known as a normally aspirated engine, and abbreviated to N/A or NA, is an internal combustion engine in which air intake depends solely on atmospheric pressure and does not have forced induction through a turboc ...

or with

twin-turbo Twin-turbo is a type of turbo layout in which two turbochargers are used to compress the intake fuel/air mixture (or intake air, in the case of a direct-injection engine). The most common layout features two identical or mirrored turbochargers in ...

chargers with an intercooler, and had a dry weight of over .

Applications

Among the heaviest and highest-displacement V8 engines ever built by Ford, the Super Duty engines were never used in automobiles; its debut in medium and heavy trucks marked the renaming of Ford F-Series "Big Job" conventionals after the engine. Slotted above the 330, 361, and 391 FT V8s used in the medium-duty F-Series (F-500 to F-700 and B-series), the Super Duty was used in heavy-duty trucks, including the F-800, F-900 "Super Duty" conventionals. Outside of the F-Series, the Super Duty engine was used in several model ranges of Ford heavy trucks, including: * Ford C-Series low-cab COE * Ford N-Series short-hood Class 8 conventional (replacement for F-Series conventional) * Ford H-Series (Class 8 COE; "Two Story Falcon" variant of C-Series) * Ford L-Series (Class 7-8 conventional)

References

External links

H-Series Ford Trucks
{{Ford v8 engines S V8 engines Gasoline engines by model

Design

Applications

See also

References

External links