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The 4.2-liter V8 engine (GM RPO code LTA) is an eight-cylinder, dual overhead cam (DOHC) twin turbo engine produced by General Motors specifically for use in Cadillac luxury vehicles. The engine is the result of a new clean-sheet engine design as well as Cadillac's first twin-turbo V8 engine. It first launched with the 2019 Cadillac CT6. [10]
The standard J2 engine in Britain was the 3.6 L flathead V8 engine from the Ford Pilot, delivering 85 hp. [7] [8] A 4.4 L Mercury V8, delivering 110 hp was also available. [9] American enthusiasts modified their cars by fitting an Oldsmobile, Chrysler, or Cadillac V8. [4] [10] J2s exported to the United States were shipped without engines. [11]
In 1915, Cadillac introduced a 90-degree flathead V8 engine with 70 horsepower (52 kW) at 2400 rpm and 180 pound force-feet (240 N⋅m) of torque, allowing its cars to attain 65 miles per hour (105 km/h). [11] This was faster than most roads could accommodate at this time. Cadillac pioneered the dual-plane V8 crankshaft in 1918.
A crossflow T-head sidevalve engine The usual L-head arrangement Pop-up pistons may be used to increase compression ratio Flathead with Ricardo's turbulent head. A flathead engine, also known as a sidevalve engine [1] [2] or valve-in-block engine, is an internal combustion engine with its poppet valves contained within the engine block, instead of in the cylinder head, as in an overhead valve ...
The Ford flathead V8 was licensed to other producers. It was used by Simca in France until 1961 and in Brazil until 1964 for cars and until 1990 in the Simca Unic Marmon Bocquet military truck. [6] In the United States, the flathead V8 was replaced by the more modern overhead-valve Ford Y-block engine in 1954.
346 Flathead V8. Car now has a Cadillac drivetrain, original engine was used in a racing boat: Unknown: Rubber Torsion Tube 2: Maroon/600 Tucker #1035 was exported to Brazil in 1949, where it was eventually kept in a private collection along with 50 other cars.
This led to more highly stressed engines which amplified the limitations of the long crankshaft and camshaft in the straight-eight engines. 1940s OHV Oldsmobile straight-8 engine. Oldsmobile replaced their straight-eight flathead engine with an overhead valve V8 engine in 1949, at which time Cadillac's V8 was changed to one with overhead valves.
In 1913 the Oakland Six was introduced followed in 1916 by the Model 50 365 cu in (6.0 L) flathead V8 engine sourced from Northway Motor and Manufacturing company, [4] [5] and production soared to 35,000 in 1917. [2] The Series 50 V8 used a flathead design shared with the Oldsmobile Light Eight and the Cadillac Type 51. [6]