1. Step 1 in the project was establishing the performance baseline. On Livernois Motorspor
From its wide stance and flared bodywork, to its incredible off-road capability, the Ford Raptor is seriously imposing. There’s simply nothing like it on the market, which is why the United States Border Patrol has pressed a fleet of them into service along the Mexican border.
But there’s another imposing attribute about the Raptor: its curb weight. Tipping the scales at a none-too-svelte 6,200 pounds in SuperCrew trim, it’s more than three tons of driving fun. The first examples off the assembly line were equipped with the 320 horsepower 5.4L engine, which was barely adequate when it came to turning the truck’s 35-inch-tall tires with authority. Ford rectified the situation by offering the 6.2L V-8 in 2010 as an option, which brought the output level up to 411 horsepower. More significantly, the torque rating also increased, from the 5.4’s 390 lb-ft to 434 lb-ft. Thankfully, the 6.2L became the standard Raptor engine in 2011.
2. The first upgrade to be installed is the Corsa exhaust system. We’ve been a fan of thei
The 6.2L unquestionably improved the Raptor’s feeling of performance behind the wheel, but it still didn’t set the asphalt alight. To see if we could make the Raptor a little more rapid, we dropped off this new Raptor SuperCrew at Dearborn Heights-based Livernois Motorsports (livernoismotorsports.com). To keep things simple and relatively affordable, a regiment of bolt-ons and a power tune was prescribed, including a new Corsa stainless after-cat exhaust system and an Airaid cold-air induction system. A custom, premium-gas tune was also added via an SCT handheld tuner, which made the most of the newly installed parts and then some.
The installation basics of the new parts are outlined in the accompanying photos, but we’ll cut to the chase and tell you the Corsa exhaust alone added 10 rear-wheel horsepower and 8 lb-ft of torque, for a mid-project total of 333 rwhp and 351 rwtq. The next testing was performed with the Airaid intake installed and Livernois’ new tune, a combination that built on the exhaust system’s gains to bring the final results to 343 rear-wheel horsepower and 369 rear-wheel torque. That’s 20 horsepower and 26 lb-ft more than stock.
It’s important to note that the intake system alone would not likely have contributed more than a few real-world horsepower, because the inlet tube is designed to maintain the approximate stock diameter in front of the mass airflow meter. That allows it to be installed without tuning. By cutting out the inner section of the tube, the intake diameter opens up significantly. Livernois Motorsports did this because they knew the Raptor would receive a new tune as part of the project. Props to Airaid for obviously designing their intake so that it could be modified.
3. Of course, before the Corsa system can be installed, the stock system must be removed.
The chassis dyno results represent about 6.5 percent and 7.5 percent increases in rear-wheel horsepower and torque, respectively, which brings us to the other bottom line of the story: The cost. Those extra horses and pound-feet cost $2,050 at Livernois Motorsports, including the pricing for the parts (and the SCT tuner), custom tuning, and installation. That’s not exactly cheap, but it’s definitely in line with the going rate for such upgrades and tuning these days. The freer-flowing intake and exhaust systems will also support greater gains if he decides to take our truck’s performance to an even higher level, such as with new camshafts or a power adder.
Right now, however, we’ve got a righteously rapid Raptor.
4. Laid side-by-side, the all-stainless Corsa system is compared with the stock exhaust. N
5. While the factory system was removed as a single component, the Corsa system bolts on w
6. Now, with all of the parts in place and the tip positioned correctly, the clamps are fu
7. Next up is the Airaid cold-air induction system, which like the exhaust system, represe
8. To prevent the need for tuning with an out-of-the box installation, the Airaid intake’s
9. Livernois Motorsports cut out the inner section of the intake, knowing they were going
10. The box section for the intake system was installed next. After the stock air cleaner
11. Livernois’ Dan Millen uploaded the custom tune for the Raptor, which will demand premi
12. When the dust cleared and the DynoJet rollers stopped spinning, the Raptor project veh
Livernois’ Really Rapid Raptors
The bolt-on performance enhancements described in our main story simply scratch the surface of Livernois Motorsports’ Raptor revitalizations. For a customer in the Middle East, the shop just finished and shipped a twin-turbocharged Raptor that made 635 horsepower and 767 lb-ft of torque at the tires. That’s more like 760 horsepower and 920 lb-ft at the crankshaft. It took more than a couple of turbos sandwiched into the exhaust stream to achieve that power. The combination includes:
- Livernois’ 400ci “stroker” bottom end (the stock 6.2L displaces 379ci, and this project truck started life with the even-smaller 5.4L)
- Livernois’ own CNC-ported cylinder heads (used with the stock camshafts)
- A custom valve spring kit and rocker brace system developed by Livernois
- A custom turbo system featuring two quick-spooling, dual-ball-bearing Garrett GT35R turbochargers and a large intercooler
- Magnaflow exhaust system
THE BOTTOM LINE
|Stock 6.2L V-8
|With Corsa exhaust
|With exhaust, Airaid intake and tuning
|(including parts, labor and dyno tuning)