Design

The Troy Indy Special and 1959 Troy Roadster design and build specifications, information and photos.

Nostalgic Inspiration

The shape of the continuation Troy was derived from a precise 3D scan of the original Troy Roadster, crafted by Wally Troy in 1959. Joe Scarbo of Scarbo Performance took complete 3D scans of the 1959 Troy, and approximately 70% of the new bodywork matches the original car. For a fresh look, an Indy Car tail section was added to form the Troy Indy Special.

Spaceframe Chassis

The tubular chassis that forms the foundation of the Troy Indy Special was designed by Scarbo Performance. Comprised of 1.5-inch Docol R8 steel tubing, the Troy chassis seamlessly joins the 495 hp driveline and advanced inboard coilover suspension. All chassis are TIG-welded on our chassis table in our Three Lakes, Wisconsin, facility.

Advanced Inboard Suspension

Keeping the Troy Indy Special planted on the pavement is a custom inboard coilover suspension system designed by Scarbo Performance. The system consists of steel pushrods, billet aluminum lever arms and QA1 double adjustable dampers front and rear with Eibach springs. Custom steel control arms reach out to Corvette C5 hub assemblies and a Cadillac CTS-V differential distributes power to the rear wheels. On our prototype Indy Special, the outboard suspension components were nickel plated for a extra flare.

"This setup really belongs on the track. It's going to handle great on the road, but you need to put this car on a race track to appreciate the suspension's capabilities." — Joe Scarbo, Scarbo Performance

Stretch-Formed Aluminum Bodywork

The prototype bodywork for the Troy Indy Special was hand crafted by Luc de Ley of Marcels Custom Metal in Norco, California. The production bodies on the other hand, are shaped using a stretch-forming process, in which the aluminum sheet is simultaneous stretched and forced over a die. This process accomplishes the majority of the forming and leads to a more standardized product.

Proven General Motors LS Engines

The 283 ci small-block was a key component of the original Troy Roadster’s character, making a modern Chevrolet V8 the obvious choice for the project. In standard spec, the Troy Indy Special comes equipped with a 495 hp GM LS3 from Pace Performance. Displacing 376 ci (6.2 liters), the aluminum-block engine features 10.7:1 compression and cross-bolted main bearing caps. The versatility of the LS3 allows exhilarating acceleration up to 6,600 rpm, without sacrificing the ability to cruise comfortably and quietly under 3,000 rpm. When you combine the Troy's impressively low curb weight of 2,200 pounds with the LS3's 486 lb-ft of torque, you've got acceleration in any one of the T56's six gears. 

The upcoming Troy Roadster continuation will come standard with a 430 hp GM LS3, and we can also accommodate small-block Chevrolets or other conventional options.

Grabbin’ Gears

The standard transmission offered in the 495 hp Troy Indy Special is the TREMEC T56 Magnum six-speed. The double-overdrive transmission provides proven OEM reliability in such cars as the Chevrolet Camaro, Dodge Challenger and Viper, and can withstand power levels up to 700 lb-ft. With three pedals and six forward speeds, you’ll get the most out of every rev, and every mile.

At All-Four Corners

Traction and braking power are of the utmost importance when you’ve got nearly 500 hp on tap, so we built plenty of grip and stopping power into the Troy. We spec'd out drilled and slotted rotors with six-piston Wilwood calipers up front and four-piston Wilwoods in the rear, along a brake bias controller that's equipped as standard. To maximize grip, the Troy rolls on Toyo Proxes ST III rubber, sized 295/45R18 in the rear, and 255/55R18 up front.

We’ll work to accommodate your vision on each Troy built, and that especially true regarding the wheels. We’ve fit 18-inch slotted alloys and Dayton wires on the Troy thus far. Bolt on, knock off or center nut; make it yours!

Behind The Wheel

The interior of our Troy Indy Special is handcrafted from high-quality drum-dyed European leather with custom color options and upgrades available. Standard equipment includes a wood-rimmed Nardi steering wheel with a quick-release hub, Stewart-Warner Wings-series gauges and Simpson harnesses. You'll also find fresh-air ventilation, a Wilwood pedal box and brake-bias controller and a USB power source.

Fit with custom aluminum seats with sliders built in house, the Troy can accommodate drivers well over six feet tall.

Troy Indy Special
7Fifteen Motorworks Logo

RESERVE A LIMITED EDITION TROY INDY SPECIAL TODAY

7fifteen Motorworks will construct just 33 examples of the LS3-powered Troy Indy Special with aluminum Indy-style bodywork.

Reserve a build slot or complete car today.

Contact Us

We look forward to hearing from you!

  • 7fifteen Motorworks
    1901 Epler Ct.
    Three Lakes, WI 54562
    US
  • 715-493-7911