The Ultimate Boss Ford 6.2 Engine Instructions. Despite its brief existence, the Ford 6.2 engine, sometimes known as the Boss 6.2, was a valuable addition to the Ford portfolio. From 2010 to 2022, Ford employed it within the F-series and Super Dutys before retiring it. During its brief run, the Boss Ford 6.2 engine earned a great reputation for dependability and performance, and there are still plenty of specimens on the road today.
This page will teach you all you need to know about the Ford Boss 6.2 engine, including specifications, vehicle applications, engine design, common issues, dependability, performance, and aftermarket modifications.
History of the Ford Boss 6.2 Engine
In 2011, Ford debuted the Boss 6.2L V8 engine to replace the outgoing modular 6.8L V10. The 6.8L had been in production since the mid-1990s, and Ford desired a more fuel-efficient engine with improved performance. Ford developed the Boss engine series, formerly known as the Hurricane, to compete directly with Chrysler’s HEMI and General Motors’ Vortec series of big displacement engines.
From 2010 to 2014, the Ford F-series, including the Raptor and special Harley-Davidson edition, was powered by the Boss 6.2 V8. Ford employed the Boss within the F-series Super Duty (F-250 and F-350) from 2011 to 2022, only retiring it for the 2023 model year. From 2017 to 2019, Ford also offered the Boss V8 as an option in the E-series vans.
Ford rated the Boss at 411 horsepower and 434 lb-ft of torque when installed in non-Super Duty F-series vehicles. However, Ford rated the boss a little lower inside the Super Duty, at 385 horsepower and 405-430 lb-ft of torque. Towing capacity of a fully loaded Super Duty with a Boss 6.2 was 15,000 lbs.
The Boss Ford 6.2 engine, which had a 13-year career, was retired after the 2022 model year. Ford has replaced it with the 6.8L V8 Godzilla engine, which was initially presented in 2020.
Engine Specs for the Ford 6.2
Vehicles Using the Boss 6.2 V8 Engine
- Ford F-Series from 2010 to 2014. (Including Raptor and Harley-Davidson edition)
- Ford Super Duty 2011-2022
- Ford E-Series from 2017 to 2019.
Fundamentals of Engine Design in Boss 6.2
The engine in the Ford Boss is a 6.2L V8 with an aluminum head and a cast iron block. The bore and stroke dimensions are 102 mm x 95 mm, which Ford classifies as a large bore and short stroke motor. The wider bore allows Ford to employ massive valves for maximum airflow, and the short stroke allows the engine to crank to 6,000 rpm. The bore spacing is 115 mm, 15 mm more than the modular engine series.
For maximum endurance, the deep-skirted block also incorporates cross-bolted, four-bolt main bearing caps. The oil pump, like the modular series, is a gerotor pump.
To compensate for the huge bore, each cylinder has two spark plugs. A “wasted spark” ignition system is what this is. The first plug to burn in this method is used for the primary ignition of the fuel mixture. The second plug is used to burn up any residual fuel before it exits the exhaust valve after the first one has fired. The first plug is on top of the cylinder, while the second is lower, right above the exhaust valve.
Furthermore, each cylinder bank is equipped with its own set of knock sensors to detect detonation and pre-ignition. When compared to the previous 6.8L modular V8, the Boss had better crankcase ventilation and efficiency.
Internals of the Boss V8, valvetrain, and more
The pistons are made of cast aluminum, and each cylinder has piston cooling jets. The connecting rods are made of forged steel, and the crankshaft is made of cast iron and has a dual-mode damper. The compression ratio is fixed at 9.8:1, and the engine runs on either gasoline or E85 (Flex-Fuel).
The valve train is a single overhead camshaft (SOHC) design with two valves per cylinder and a total of sixteen valves. It employs roller-rocker shafts, which allow for splayed valve angels, which optimize flow. The shaft-mounted rocker arms provide improved stiffness, and the splayed valves boost flow in a manner comparable to canting. The SOHC arrangement reduces space and money while yet providing excellent performance.
On the Boss 6.2, Ford employs “dual equal” variable cam timing (VCT). This means that both the intake and exhaust valves open and close simultaneously, which Ford claims provides the highest fuel economy and performance. Cam Torque Actuation is used by the VCT to help reduce parasitic loss from the drive belt.
The intake manifold is composed of plastic and features long-runners that have been tuned for maximum torque. The throttle body is 80 mm in diameter and operates through drive-by-wire. It is also forward facing, which is unusual for Fords, which normally have them sideways.
The Boss V8 is a low-cost V8 that nonetheless provides excellent reliability and performance. Ford built it to be a capable truck motor capable of towing heavy loads, and they did a good job. Don’t be fooled by its brief production run; the Boss V8 is a powerful engine.
Typical Issues and Reliability of the Boss 6.2 V8
Overall, we believe the Ford Boss 6.2 V8 engine is quite dependable. While it only had a 13-year production run, this should not be interpreted as a reflection on its dependability. Since its release in 2010, owners have experienced only minor issues. There have been numerous Boss V8 powered Fords that have surpassed 100,000-200,000 miles and are still running today.
Yet, there have been a few nagging faults with the Boss over the years. They aren’t enormous, and they aren’t disastrous, but we believe they should be mentioned. We already discussed the four most typical Ford Boss 6.2 V8 engine issues. We’ll go through them again here, but if you want additional information, see the page linked above.
Common Boss Raptor and Super Duty Problems
The following are the top four most common Ford Boss 6.2 V8 engine issues:
- Failure of a valve spring
- Oil spills
- Idle time
- Excessive oil usage
First and foremost, we’ll look at valve spring failure. Valve springs are located between the rocker arm and the valve itself, and they use spring pressure to maintain valve tension. Valve springs are one of the most critical components of a valve train; if they break, you will have floating valves, which can cause major problems.
Regrettably, the valve springs on some Boss 6.2 engines have failed early. This is typically manifested as a harsh idle, misfiring, and power loss. While the replacements are very inexpensive, working on the Boss valve train is tedious, thus labor expenses can be rather costly.
The following issue is oil leaks. To be honest, oil leaks are a common sign of high-mileage automobiles, and the Boss V8 is no exception. The valve cover gasket, oil pan gasket, and main seals are the most common locations. Given that the issue is with the gaskets rather than the engine, it’s difficult to term this a “problem,” as it’s more of a wear issue. Still, it’s something to keep in mind, especially if your Boss V8 is approaching its mileage limit.
Rough idle, faulty spark plugs, and excessive oil use
The third issue is a rough idle on occasion. The Ford Boss 6.2 engine, as previously stated, used a dual-spark plug per cylinder “wasted spark” ignition system. All spark plugs have a mileage limit, and it appears that Boss is particularly susceptible to them after 50,000-60,000 kilometers. Keeping up with spark plug changes is a simple method to avoid problems with the Boss V8.
The third issue we will address is excessive oil consumption. While it may seem obvious, the Ford 6.2 will begin to have oil consumption concerns after 200,000 miles. This comes as no surprise given the extraordinarily high mileage, but it’s worth mentioning. It could be a symptom of low compression if it gets too bad, but as long as you’re within 1-2 quarts per 5,000-7,000 miles, you should be fine.
Performance and Upgrades for the Boss Raptor and Super Duty
The Boss 6.2 V8 already has some impressive performance stats right out of the box. Ford rated the Boss in the F-150 series, including the Raptor and Harley-Davidson edition, at 411 horsepower and 434 lb-ft of torque. Ford rated the Super Duty series a tad lower, with 385 horsepower and 430 lb-ft of torque.
While these trucks were obviously designed for torque and hauling capability, they are also capable of producing massive amounts of horsepower. As soon as Ford launched the engine, legendary engine maker and tuner Hennessey began producing twin-turbo kits capable of increasing horsepower to 810. While that is certainly a bit much for most people, it demonstrates the Boss’s ultimate power.
Ford rates the Boss V8’s towing capacity at 15,000 pounds, but with greater torque, that number may easily be increased. Given that the 6.8L is capable of pulling 20,000 pounds, the Boss still has a long way to go in order to compete.
Ford Boss 6.2 Cold Air Intakes
While many people recommend starting with a cold air intake, they are actually quite useless for the Boss V8. Ford already has a cold air inlet fitted from the factory, and it is more than capable of producing adequate air for plenty of power.
Top Raptor and Super Duty Engine Modifications
The following are the best Boss Ford 6.2 V8 engine upgrades for increasing horsepower and towing capacity:
- Headers for Long-Tube Vehicles
- ECU Programming
- Heads of Cylinders
- Induction by Forcing
We recommend beginning your Boss V8 construction with a set of long-tube headers. The restricted cast iron exhaust manifold and catalytic converters are replaced by long-tube headers. They are often composed of a robust yet lightweight metal, such as T304 stainless steel, and come in either high flow or catless configurations. Power improvements of 25-30 wheel horsepower can be expected with simply headers. This pair of American Racing Headers Ford Raptor 6.2 Boss headers is top of the line and comes in catted or catless configurations.
Following the upgrade of your exhaust, we recommend ECU tuning. To enhance horsepower and torque, a qualified tuner makes tweaks to your car’s ECU, which essentially runs the engine. Typically, this is accomplished by altering parameters like as ignition timing, camshaft timing, and air-to-fuel ratios. Tuning alone can result in gains of 20-30 horsepower and torque.
We suggest Livernois Motorsports Ford Super Duty tuner as a tuning solution. Livernois Motorsports is a well-known name in the Ford performance industry, and its tuners have received rave reviews.
Related : The Three Most Frequent Nissan VQ40DE Engine Issues
Camshafts and cylinder heads for the Ford 6.2 Raptor and Super Duty
Next, we recommend going all in and upgrading the camshafts and cylinder heads. Changing the standard cams to something more aggressive is an excellent method to increase power over the rpm range. As previously stated, the Boss 6.2 V8 has tremendously enormous valves, which allows for higher lift and better duration on the dyno sheet. Again, Livernois Motorsports camshafts are recommended. They also offer camshafts with improved valvetrain sets for maximum performance.
Together with cams, replacing the cylinder heads is an excellent alteration. It is critical to allow for improved flow in and out of the engine, and an upgraded cylinder head will flow considerably more and much faster than stock. With a large bore engine like the Boss V8, it’s critical to get as much air as possible into the enormous valves. One of the most effective ways to improve flow is to upgrade the head.
Again, we recommend Livernois Motorsports for improved cylinder heads. Stage 2 and Stage 3 cylinder heads are available from Livernois Motorsports. The stage 2 heads are substantially less expensive and intended for lower-cost builds, whilst the stage 3 heads also include camshafts, saving you money.
Superchargers and turbo kits for Ford 6.2 Raptor and Super Duty
Lastly, there is no better alternative than forced induction if you really want to push the Boss V8 in your Raptor or Super Duty to its maximum. It’s really difficult to push the Ford 6.2 above 500 horsepower when it’s naturally aspirated. At such point, forced induction is your most dependable and cost-effective alternative.
For Boss V8 forced induction, you have two options: supercharging or turbocharging. As previously stated, Hennessey had a twin-turbo kit for the Boss V8 that could produce 605-810 horsepower. Because of the engine’s enormous displacement, you’ll probably want a twin-turbo arrangement rather than a single-turbo setup.
There are various kits on the market if you wish to install a supercharger. For the most power, we would generally recommend a centrifugal supercharger, however Whipples (twin-screw) are also very popular.
Synopsis of the Ford Boss Engine
Overall, Ford’s Boss 6.2 V8 engine was an outstanding powerplant. Despite the fact that it was only produced for 13 years, it has a reputation for dependability and performance. There have been numerous 200,000 mile Boss V8s, as well as 300,000 and 400,000 mile specimens. These engines are clearly capable of extreme durability.
They are also no slouch in terms of performance. With a maximum towing capability of 15,000 lbs, the Boss can tow just much whatever you need. If you want to increase performance, you can go from long-tube headers to a huge twin-turbo kit with a lot of boost.