It's now called the Coyote motor. The v10 is discontinued and for good reason. The 5.4 triton was gutless, had cam phaser issues that made people think they had a rod knock and they sucked gas like no other. Inefficient to say the least. read more
On November 22, 2015, MMR (Modular Motorsports Racing) set the World record for a 5.8L Modular Engine with a time of 5.95 seconds at 242 mph (389 km/h) making this the first and only 5 second pass for a Ford 5.4/5.8 Ford Modular Engine. read more
That happens. But, by and large, the 5.4L Triton was/is a great engine. Like another person brought up, the EcoBoost engine has not had the full run of experiential tests but I was very impressed by the results of the torture tests that Ford did on it. Ford most certainly did not discontinue the 5.4L Triton because it was a piece of crap. read more