2004 Chevy Corvette C5 383ci Procharged

The Project
Delivering 703 rear-wheel horsepower reliably on the iconic C5 platform requires an uncompromising look at structural limits. The heartbeat of this build is a hand-built Modern Muscle 383 cubic inch stroker engine crowned by a highly efficient, polished ProCharger D-1SC supercharger pushing 11 PSI through a Stage II intercooler matrix. True safety engineering dictates chassis reinforcement, which is why a color-matched Wolfe Race Craft 6-point roll bar protects the cabin without ruining street usability thanks to removable door bars. Put to the ground via a dual-disc McLeod clutch, an RPM Stage 3 performance differential, and massive multi-piston Wilwood brakes, this C5 stands as a definitive benchmark of forced-induction LS execution.
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Street Trim: 703 RWHP / 562 RWTQ @ 11 PSI
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Engine: Modern Muscle 383ci LS Stroker (9.7:1 CR)
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ProCharger D-1SC Supercharger (Stage II Intercooled)
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Built to Lead. Engineered to last.

703 rear-wheel horsepower of pure, continuous boost. This C5 Corvette combines a custom Modern Muscle 383ci stroker engine with a polished ProCharger D-1SC supercharger at 11 PSI.

ls1 v8 motor

The Nitty Gritty

Build Specifications
Nitrous System & safety Architecture
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ProCharger Stage II intercooled supercharger system utilizing a polished D-1SC centrifugal head unit
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Wolfe Race Craft 6-point structural safety roll bar featuring removable swing-out door bars custom-painted in factory LeMans Blue
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Katech cast aluminum valve covers and complete ignition coil relocation system, color-matched in LeMans Blue
Drivetrain & Fuel Delivery
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FAST 92mm high-flowing intake manifold paired with matching FAST billet fuel rails
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Modern Muscle custom dual 255 LPH in-tank fuel pump system feeding Bosch 80# (at 3 bar) flow-matched fuel injectors
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McLeod RST heavy-duty twin-disc clutch assembly rated for rapid torque onset
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RPM Transmissions Stage 3 performance differential housing an upgraded 3.73 ring and pinion gear ratio
Chassis & rigidity
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Wilwood Superlite big brake conversion kit utilizing heavy-duty multi-piston calipers and slotted rotors
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Modern Muscle custom Speed Density dyno tune and electronic calibration for crisp throttle response
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Track-tested performance chassis geometry optimized for high-speed tracking and stability
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Uncompromised factory modern interior layout fully integrating the race-spec safety cell structure
The Powerplant & Exhaust
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Wiseco -15cc forged pistons with high-strength GFX rings, Morel Ultra Pro link-bar lifters, and robust ARP head studs
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CNC-ported 241 cylinder heads outfitted with PAC Racing dual valve springs and a custom-ground Modern Muscle supercharger camshaft
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Billy Boat 1 ¾” performance long-tube headers running into a high-flowing exhaust system
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Modern Muscle 383ci LS stroker V8 engine featuring a Callies CompStar 4.00” stroke crankshaft and matching 6.125” connecting rods
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