5.0 Mustang & Super Fords
2002 Ford Mustang GT AFM Power Packages - NIkki's Six - Two-Valve Buildup Part 3
Kenne Bell Boost Pushes Nikki Wilson's Two-Valve Over 600 Horsepower At The Tire
Horse Sense: While our hobby seems to be consumed lately by new-product hotness for Coyote-powered Mustangs, we're keeping a close eye on what we hope will be a full-on resurgence of interest in New Edge Ponies and the Two-Valve, 4.6-liter engines that power them. Their engines can be set up to make big steam, their suspensions can be set up to ride like glass, and the overall cost to do everything falls far short of the coin you'll need to purchase and upgrade a newer car.
Hopefully all of you are current and up-to-speed on details of the really cool performance transformation that Nikki Wilson has been giving her '02 Mustang GT. For those of you who aren't familiar with the series, here's a brief synopsis of how things have gone thus far.
We received word about Nikki and her project idea-to upgrade her 'Stang's stock Two-Valve 4.6 and not break the bank-from our friend Rick Anderson of Anderson Ford Motorsport. As many of you know, we like to pursue cool projects that hit our radar, and we're definitely all about sharing information on self-doable upgrades that won't crush your wallet.
The subject of Nikki's concept, the 4.6-liter Two-Valve engine in her '02 rag-top GT, met every criteria for the kind of bullet we like to use for this type of exercise-it was running and, more importantly, it was bone-stock. After evaluating said stocker's oats on a Dynojet chassis dyno, initial highs were achieved through the addition of Anderson Ford Motorsport's all-motor-bolt-on packages-two affordable performance sets that ultimately brought the 'vert's power from 227.40 to 291 horses at the feet. However, like any other Ford-Blue-bleeding 'Stangbanger, Nikki's ultimate goal was to have a lot more power on tap.
So with big-steam in mind, the second effort in our three-part study was highlighted by Nikki and her crew swapping a D.S.S. SuperMOD stroker between the Pony's fenders, and hopping it up with Trick Flow heads and intake manifold, and a hot set of cams from AFM. Upgrade Number Two raised the power bar to the 363 mark and put the convertible 'Stang on a great path for even-more performance, which we're confident will come by way of the Kenne Bell 2.6-liter supercharger that we're covering in this final chapter.
The following photos and their captions present a few highlights of the blower install, which includes another cam swap, and the addition of a Kenne Bell Boost-a-Pump unit, to hopefully ensure the 4.6 has plenty of fuel to gulp down when the revs get high. The dyno results follow that pictorial, and officially close our chronicle of the rag-top's ascension from stone stocker to street rocker.
Photo GalleryView Photo Gallery
On The Dyno
Over the course of three issues, we've watched Nikki Wilson's New Edge convertible 'Stang be transformed. In her home driveway and garage, Nikki took the car from a feeble, stock 4.6 GT, to a snarling, 5.0-stroked, Kenne Bell-boosted Cobra killer.
With the blower installed, dyno tuning for this effort was left in the capable fingers of Anderson Ford's Danny Biggs, who manipulated a newly added Abaco DBX-97b mass air and the Pony's stock PCM (for fuel and timing calibration) using DiabloSport's Chipmaster Revolution tuning software.
Up front, a '99-'04's factory fuel pump will not support the type of horsepower this blower setup is capable of producing-with the 3.25-inch pulley installed, and certainly not with the bigger-boost 3.00-inch wheel. So, to help support the fuel demand for this effort, a Ford GT fuel pump was bolted in place.
|AFM 60||D.S.S||KB 3.25|
|KB 3.00||AFM 60 vs. KB 3.00|
As you see in the chart and graph, the Two-Valve 5.0 makes insane rear-wheel horsepower. With the 3.25-inch pulley, the KB churned 14 psi of boost with pump fuel only. As anticipated, the smaller pulley netted Nikki even more boost (17 psi), which resulted in 616 hp at the feet of her 'vert. However, it was noted that despite the combination of Ford GT fuel pump and a Boost-a-Pump unit, the setup requires more fuel.
While installing a set of twin SVT Cobra fuel pumps ultimately will be the route that Nikki must take for safe, consistent horsepower in the 600 range, we're beyond impressed with the performance that has been presented through simple bolt-ons, a stout engine upgrade and a supercharger, which are all DIY-able for mechanically inclined enthusiasts such as Nikki.