Oswego Motors
Sales
1100 US-34
Oswego, IL 60543
630-705-2900
17
25
2005 Pontiac GTO 6.0L 6-Speed Manual – Professionally Built by SPEED INC – Only 45K Miles
Overview
This 2005 Pontiac GTO in Phantom Black Metallic is a rare, collector-grade American muscle car that’s been transformed into a precision-built performance machine. With just 45,980 miles, a Clean CarFax (No Accidents, No Damage), and 7 documented service history records, this GTO has been professionally built and tuned by SPEED INC in Schaumburg, Illinois — one of the Midwest’s most respected LS performance shops. This build includes a binder with all documentation, including the original build sheet, full service records since day one, receipts, and a dyno sheet, giving buyers total transparency and proof of the quality and detail that went into this car.
Engine & Performance
Under the hood lies the heart of this GTO’s transformation — a professionally built Eagle I-Beam Forged 404 Stroker LS2, paired with a 6-speed manual transmission for pure driver engagement. The engine build was designed for both reliability and raw power, using premium internal components and professional tuning from SPEED INC.
Key build highlights include:
Eagle I-Beam Forged 404 Stroker Kit
243 Cylinder Heads w/ Manley Valves (11363-8 & 11360-8)
TSP .660 Valve Springs & BTR Chromoly Push Rods
TSP MS4 Camshaft
Morel 6504 Lifters
Melling High-Pressure / High-Volume Oil Pump
Racing Trap Door Oil Pan Baffle
ARP Main Studs & ARP Balancer Bolt
FAST LSXR 102 Intake Manifold
Pacesetter Stainless Steel Headers
Pypes H-Box Midpipe & Axle-Back Exhaust
Mcleod RST Twin Disk Clutch
VMR V710 Wheels (18x8.5 +45 Front / 18x9.5 +55 Rear)
This setup gives the GTO monstrous power and torque delivery while maintaining daily drivability and reliability. The car sounds incredible — deep, crisp, and aggressive — yet it remains composed thanks to a professional tune and balanced drivetrain.
Transmission & Drivetrain
The 6-speed manual transmission paired with the Mcleod RST Twin Disk Clutch delivers crisp, confident shifts and ensures the car can handle the added power with ease. The RWD layout gives classic rear-wheel performance dynamics, perfectly complemented by the GTO’s independent rear suspension for superior control.
Interior & Features
The Black leather interior is clean, original, and well-preserved, reflecting the low mileage and careful ownership. Standard features include:
Leather Sport Seats with GTO Embroidery
6-Disc CD Stereo with Premium Sound
Power Windows, Locks, and Mirrors
Cruise Control & Steering Wheel Audio Controls
Air Conditioning & Rear Defrost
Everything functions properly, and the car maintains the OEM comfort and practicality that makes the GTO a true all-around performer.
Exterior
Finished in Phantom Black Metallic, this GTO looks every bit as aggressive as it performs. The body is clean, straight, and well cared for, with a deep gloss that highlights the car’s sculpted lines. The upgraded VMR V710 Wheels give it a modern, performance-oriented stance without sacrificing the classic appeal. All glass, lights, and trim are in excellent condition, reflecting its well-preserved, garage-kept status.
Condition & History
This GTO has been meticulously maintained and professionally upgraded using high-quality parts — no shortcuts, no backyard tuning. The binder of service records, build receipts, dyno sheet, and original documentation will all be included with the sale. With a Clean CarFax, no accidents, and a documented history from day one, this is one of the cleanest, most transparent modified GTOs you’ll find anywhere.
Warranty
Included with purchase is Oswego Motors’ 3-Year / 100,000-Mile Powerhouse Warranty, offering peace of mind and long-term protection on your investment.
About Us
Oswego Motors is a 5-star rated dealership located at 1100 US Route 34 in Oswego, Illinois, known for transparent pricing, no hidden fees, and a stress-free performance car buying experience. Every vehicle we offer is hand-selected, inspected, and competitively priced using real-time market data. We specialize in unique and well-maintained vehicles like this GTO — cars we’d proudly own ourselves. Read our reviews on Google, Facebook, and CarGurus to see why enthusiasts across Chicagoland trust Oswego Motors.
Call to Action
Call (630) 705-2900 or visit OswegoMotors.com today to schedule your test drive or private viewing. This 2005 Pontiac GTO is more than a muscle car — it’s a professionally built, documented performance machine with pedigree and precision that few others can match.
Visit 1100 US-34 online at Oswegomotors.com to see more pictures of this vehicle or call us at 630-705-2900 today to schedule your test drive.
Vehicle Availability Disclosure:
At Oswego Motors, we strive to keep our inventory up-to-date across multiple platforms. Due to the fast-moving nature of our inventory, we encourage all interested customers to call us directly at 630-705-2900 to confirm the availability of our vehicles. If you are traveling from out of state, please let us know; we are happy to hold a vehicle for you while you are en route. We appreciate your understanding and look forward to serving you.
Vehicle Availability Disclosure:
At Oswego Motors, we strive to keep our inventory up-to-date across multiple platforms. Due to the fast-moving nature of our inventory, we encourage all interested customers to call us directly at 630-705-2900 to confirm the availability of our vehicles. If you are traveling from out of state, please let us know; we are happy to hold a vehicle for you while you are en route. We appreciate your understanding and look forward to serving you."
