The 5.0L V8 paired with Ford's 10-speed transmission makes for a potent performance combination, but to truly get the most out of your awesome 2021 F150 5.0L build, you'll need a few upgrades. These performance engine parts for 2021 F150 5.0Ls add horsepower, increase torque, and improve throttle response so that you can push your truck to handle any application or challenge.