The 427/675 HP 1958 Corvette Custom Convertible is a machine engineered for ultimate performance, built specifically for the Pro Touring segment. This comprehensive, no-expense-spared build transforms the classic C1 into a vehicle capable of challenging modern sports cars. The entire foundation rests on a state-of-the-art Roadster Shop Fast Track Stage III chassis. This critical upgrade ensures the car possesses both incredible structural rigidity and cutting-edge handling dynamics. With only 743 miles since its completion, this custom build is essentially new and ready for serious road use.
Advanced Chassis and Suspension
The core of this transformation is the Roadster Shop Fast Track Stage III chassis. It features fabricated 10-gauge steel fully boxed frame rails, providing immense strength. The front suspension is a complete RS Fast Track setup with a 54.75-inch track width for superior stability. Handling is managed by Penske double adjustable RS Edition coilovers at all four corners. Furthermore, the rear utilizes a Fast Track independent rear suspension system. This sophisticated chassis, paired with a lowered ride height, guarantees exceptional grip and precise cornering capability.
Braking and Wheel Upgrades
To match the extreme power, the car employs a massive 4-wheel Wilwood disc brake system. The setup features 13-inch cross-drilled rotors clamped by powerful 6-piston Black calipers. A Wilwood dual master cylinder and stainless hard lines ensure responsive and reliable braking performance. This system provides critical confidence when driving at speed. The custom Corvette rides on staggered Schott Accelerator wheels: 19 inches in the front and 20 inches in the rear. These modern wheels are wrapped in high-performance Nitto NT05 tires.
The Custom V8 Performance Engine
Under the bonnet lies a heart built for speed: a 427/675 HP Texas Speed LS7 V-8 engine. This fuel-injected powerhouse utilizes forged internal components for extreme durability and power handling. Precision Race Components 265cc ported heads improve airflow and efficiency significantly. The engine also features a Precision Metalcraft short-runner intake manifold and FAST 50-pound injectors. The compression ratio is set at a robust 11.45:1. This aggressive configuration, affirmed by a dyno sheet, verifies its exhilarating 675 horsepower rating.
The Manual Drivetrain
Translating this massive power to the ground is a mandatory Tremec T-56 Magnum 6-speed manual transmission. This gearbox is revered for its strength and precise shift action in high-horsepower applications. It connects to the V8 via an upgraded McLeod RST twin disc clutch with a hydraulic throw-out bearing. The clutch provides firm engagement while remaining manageable for street driving. A 3-inch stainless exhaust system ensures the powerful V8 sings a rich, aggressive note. Lokar pedals and linkage complete the driver’s connection to the drivetrain.
Bespoke Interior and Exterior Details
The exterior maintains the classic Black finish of the 1958 Corvette but with subtle modern touches, including Silver coves. The bumpers have been expertly fabricated and tucked in, including a single one-piece rear bumper, streamlining the classic lines. Inside, the cabin features a custom Gray leather interior, combining classic luxury with a modern, tailored feel. The installation of a new American Autowire harness ensures all modern electrical components function flawlessly. These small details underscore the quality of the build.
Modern Cabin Technology
Driver controls include an Ididit tilt steering column for adjustability and comfort. Instrumentation is provided by Dakota Digital RTX gauges, which offer a classic look with modern accuracy. Comfort is handled by a Vintage Air Gen IV system, providing efficient climate control. Other modern touches include power windows, a custom hideaway radio, and a pushbutton electric parking brake. Even safety has been updated with custom seat belts built directly into the doors.
Power, Engine Specs, and Performance
The core performance data confirms the car’s status as an elite machine. The Texas Speed LS7 V8 produces 675 horsepower and an equally prodigious torque figure, allowing for incredible acceleration. This massive power is channeled through a heavy-duty Tremec 6-speed manual transmission. The Roadster Shop chassis, Minitubbed rear, and Penske coilovers ensure the power is usable in all dynamic situations. The four-wheel Wilwood disc brakes guarantee consistent and rapid deceleration from high speeds. The resulting performance is vastly superior to any stock C1 Corvette.
Summary of the Custom Convertible
This 427/675 HP 1958 Corvette Custom Convertible is a spectacular demonstration of the modern Pro Touring movement. The build marries the timeless design of the first-generation Corvette with a high-performance LS7 V8 and a sophisticated Roadster Shop chassis. It features a Tremec 6-speed, massive Wilwood brakes, and a fully custom, high-tech interior. This Corvette offers the rare opportunity to own a meticulously constructed, no-compromise machine that blends classic aesthetics with contemporary supercar-level performance and handling.
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Source: mecum.com
