As we recently shared with you, Steeda Autosports built a one-of-a-kind Mustang, dubbed the Shelby GT350X, for the 2017 Dream Giveaway. The final modification delivering the performance to back up its Steeda suspension upgrades and visual modifications was a Whipple supercharger designed specifically for the Shelby GT350/GT350R.
“Steeda Autosports believes in giving back and we support many different charity causes as well as our military. When the opportunity came up to participate in the 2017 Mustang Dream Giveaway, it was just a natural for us inasmuch as we design and manufacture more S550 performance upgrades than anyone else in the marketplace,” Bob Adams, Business Development Manager at Steeda Autosports, said. “In particular, the GT350 platform responds exceptionally well to our upgrades — effectively elevating the car to substantially greater heights, while remaining docile enough for comfortable everyday driving.”
Of course the aforementioned supercharger system was the crown jewel of the modifications on this one-of-a-kind Shelby GT350X. This 2.9-liter twin-screw supercharger is supported by a complete kit from Whipple, including an intercooler system, fuel injector upgrades, a supporting PCM calibration, and more.
“We utilize the Whipple 2.9-liter blower on all of our Q750 Steeda StreetFighters that we manufacture, and its overall performance has clearly demonstrated its superiority — especially with its outstanding low-end torque and volumetric efficiency,” Bob enthused. “Hands down, it is far better than roots-type superchargers that are sold today because it provides more power per pound of boost than any other system that is available with outstanding reliability.”
The 2.9-liter has been a leader on the S550 platform. — Dustin Whipple, Whipple Superchargers
“The system is almost identical [to the Mustang GT system], the biggest difference is the throttle body and calibration,” Dustin added.
Steeda technician Matt Bouyea bolted the Whipple supercharger and its supporting hardware to the Shelby GT350X in the company’s Pompano Beach, Florida, shop. We will hit the highlights here, but Whipple provides a highly detailed instruction manual for those who want to tackle the installation themselves.
“The overall installation is really straightforward for a properly qualified automotive technician with professional tools,” Bob Adams of Steeda Autosports said. “The Steeda/Whipple Supercharger kit has been thoroughly engineered for fitment that mirrors OEM fit, finish and reliability and when completed — it just looks right in the engine compartment.”
Casting A Spell
Of course, fitting the hardware together is important, but Whipple also provides the electronic support to cast a boosted spell on the Voodoo 5.2-liter engine. That support is in the form of a carefully crafted custom calibration flashed into the factory PCM.
The Steeda/Whipple supercharger performance package when combined with our various Steeda G-Trac suspension upgrades completely transforms the GT350. — Bob Adams, Steeda
In practice, the supercharger turns the high-winding Voodoo engine into a completely different animal. The Whipple blower adds a low-end punch that the stock 5.2-liter lacks, but it still keeps pulling all the way to the top of its stupendous redline.
“In a single word, ‘breathtaking,’ and I have been around performance vehicles for over 25 years,” Bob added. “The Steeda/Whipple supercharger performance package when combined with our various Steeda G-Trac suspension upgrades completely transforms the GT350 to an unprecedented level of performance. A normal GT350 just can’t compare to the level of performance we have been able to attain with this package. Power, handling, and drivability are unsurpassed.”
Steeda Shelby GT350X Mods
• Brushed-aluminum GT350X grille emblem
• Color-coded Lightning Blue “supercharged” side rocker stripes
• Color-coded “supercharged” hood callouts
• Steeda G-TRAC Suspension fender badges
• Color-matched GT350X emblem on the rear fascia
• Body-colored rear fascia
• Body-colored rear spoiler with Lightning Blue over-the-top striping
• GT350X sill plates and dash plaque
• GT350X wheel center caps
• Raised white-letter Nitto NT-555 G2 tires
• GT350X callouts embroidered on the front seats
• Steeda two-point G-Trac brace
• Steeda billet oil separator
• Steeda rear independent rear suspension subframe brace
• Steeda independent rear suspension alignment kit
• Steeda caster/camber plates
• Steeda clutch helper spring
• Steeda adjustable rear toe link
• Steeda billet aluminum integral/vertical links
• Steeda rear sway bar
• Steeda rear camber arm brackets
• Whipple 2016-2017 Shelby GT350/GT350R supercharger system
“Power means nothing without traction and handling — and the Nitto high-performance tires are an absolute requirement so that the car can hook up perfectly and lay the power to the pavement,” Bob said.
“We have been partners with Nitto for over 20 years, and do extensive tire testing on the track, street, and drag strip with them in the quest of always evolving the best high-performance tire for the Mustang platform,” he added.“The Nitto NT-555 G2 selected for this car is a maximum-performance tire engineered to complement the high horsepower of the vehicle and we believe it is the perfect tire for all-around performance.”