Skyfire Vector Program

2004 Chevrolet Cavalier LS Sport Sedan

R105

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Original Build Studies

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Blueprint Studies

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Story

Skyfire Vector Program takes the most anonymous J-body spec sheet and treats it like an Unlimited-class problem: widen it until the tires fit, then build aero that actually works at speed. The Cavalier’s sedan roofline stays recognizable, but everything below the beltline gets re-authored into sharp, panel-like surfaces—big brake ducts, real heat extraction, and a splitter/canard layout aimed at front-end authority instead of parking-lot drama.

Under the skin, the concept leans on believable Time Attack priorities: track width, cooling capacity, and packaging that survives repeated hot laps. A front-mid 2.4L turbo layout shifts mass rearward, the sidepod intercoolers shorten charge piping, and the underbody is treated as a system—splitter to flat floor to deep diffuser—so the car isn’t just loud in photos, it’s stable when the data logger says 140 mph.

Blueprint

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Collectible Poster

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Technical dossier

Fictional engineering concept

Platform

2004 Chevrolet Cavalier LS Sport Sedan

Powertrain concept

Turbocharged 2.4L inline-4 (Ecotec-family concept) built for sustained high-load track duty
Liquid-cooled turbo system with dedicated oil cooling and high-capacity intercooling
Front-mid placement to improve balance and reduce front axle overload
Track-calibrated ECU strategy emphasizing repeatability: IAT control, knock margin, and thermal limits

Aero package

175 mm forward splitter with multi-plane leading edge and reinforced mounting points
Inward-angled canards (30°) for front-end bite and yaw stability at speed
Flat-floor integration concept feeding a deep rear diffuser with six vertical vanes
Trunk-lid extension with forged-carbon lip spoiler to clean separation and add rear stability

Chassis & stance

2004 Chevrolet Cavalier LS Sport Sedan

Wheels & tires

Front: 18x11 Forgeline forged monoblocks, ET18
Rear: 18x12 Forgeline forged monoblocks, ET15
Tires: Michelin Pilot Sport Cup 2 R — 315/40-18 front, 335/40-18 rear
Ride height target: ~85 mm ground clearance with track-focused alignment range

Fabrication notes

Widebody executed as planar composite/metal sections with consistent chamfers for repeatable panel gaps and serviceability
Brake ducting integrated into front flares with sealed routing to the rotor hat area and controlled exit under the splitter
Reinforced splitter mounts tied into chassis structure to prevent aero stall from deflection
Diffuser and undertray designed as removable modules for quick access and damage repair
Heat management: hood extraction plus rear rocker vents to prevent heat soak in long sessions