p>There are many options for upgrading your 5.0L. On a stock engine, the following upgrades can improve performance and fuel economy:
Engine Block
These engines have a 3.629 in. bore diameter. The thin wall casting should not be bored more than .010 in. over. You can achieve a .030 in. overbore if the factory sleeves are replaced with a thicker alternative.
Rotating Assembly
Stock pistons are a known weak point. They will crack ring lands in higher horsepower engines. A set of Forged Pistons should be high on your priority list. The factory rods are powdered metal with a cracked cap design and can handle about 650 hp. If you're getting forged pistons, upgrade to Forged Connecting Rods at the same time.
The OE crankshaft is forged and can handle about 850 hp. and 7,500 rpm. Upgrading to an aftermarket Forged Crank early in your build will save you headaches later.
Cylinder Heads
Factory Coyote heads flow well but still respond to porting and polishing. They can be milled for a higher compression ratio. Though with compression ratios between 11:1 and 12:1 stock, you must be careful with fuel and tune.
Camshafts and Valvetrain
Coyote engines respond well to Cam Upgrades. In addition to valve springs and pushrods, the cam needs to match the compression, torque converter, rear-end gears, etc. Keep in mind, piston-to-valve clearance is tight most cams will require variable valve timing limiters.
Intake Manifold and Throttle Body
Porting is a popular option for stock intake manifolds and the 80mm factory throttle body won't be a restriction in most applications. For high horsepower builds we recommend using an Aftermarket Intake Manifold. Most aftermarket intakes are designed to accommodate larger Throttle Bodies. Just be sure to match the intake port shape on the heads.
Upgrading to larger Fuel Injectors is often needed to meet the demand of increased power. The factory fuel pump and injectors will become a limitation around 550 hp. So, plan on upgrading the Fuel Pump as well.
Tuning the computer changes the fuel and ignition curves to increase performance. This is especially true for truck engines whichhave a conservative tune from the factory. Plug-In programmers are relatively easy to use, but they do have limits. Custom tuning requires more knowledge but can provide even better performance.
Forced Induction
The Coyote engine has excellent airflow and is a good candidate for boost with the right upgrades. The most common way to do this is with a Supercharger.
