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The firing order has been changed from that shared by all previous Modular V8s (1-3-7-2-6-5-4-8) to that of the Ford Flathead V8 (1-5-4-8-6-3-7-2). [17] Compression ratio is 11.0:1, and despite having port fuel injection (as opposed to direct injection ) the engine can still be run on 87 octane gasoline.
Initially, the 4.6 L Triton engine and the new 3-valve 5.4 L three-valve-per-cylinder Triton V8 engines, respectively mated to a 4R70E and 4R75E four-speed automatic transmission, were the only two powertrain combinations available to the retail public on the new trucks.
Three engines were offered with the 2009 redesign: a revised 5.4L 3-valve-per-cylinder Triton V8 that is E85 capable with an output rating of 320 hp (239 kW) and 395 lb⋅ft (536 N⋅m) of torque (both ratings on E85), a 292 hp (218 kW) 4.6L 3-valve-per-cylinder V8, and a 248 hp (185 kW) 4.6L 2-valve V8.
In the interest of cost effectiveness, the 5.4 L DOHC V8 introduced in the 1999 model year was replaced by the same 5.4 L 3-valve SOHC V8 that had been available in the F-150 since the 2004 model year. Though having a different head design, the new engine offered similar overall output, producing 300 hp (224 kW) at 5000 rpm and 365 lb⋅ft (495 ...
The base 4.6 L Triton V8 engine was dropped for the 2005 model year as the 5.4 L Triton V8 was made standard on all Expeditions and updated with 24-valve technology and variable valve timing. The Expedition also received a significantly updated version of the four-speed 4R70W automatic transmission.
The Fork and Blade V8 used a novel approach for the piston connecting rods, which meant two connecting rods shared one bearing on the crankshaft, which allowed for a short crankshaft and a smaller overall engine size. 1932–1953 Flathead V8; 1940–1950 Ford GAA engine, exclusively for armored fighting vehicle military use; 1952–1963 Lincoln ...
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