
Buyer Resources
- 1974 Plymouth Road Runner Pro Street Supercharged
- 440ci Supercharged V8
- Dual Holley 600 CFM Carburetors
- Dyer’s Machine Blower Company Supercharger System
- 727 TorqueFlite 3-Speed Automatic
- RWD
- Lime Green Exterior
- Black Interior
- Professionally Built & Balanced Big Block V8 (Estimated 800 HP)
- Built By Dyer's Machine Blower Company
- 93 Octane Pump Gas Compatible
- Hydraulic Roller Valvetrain w/ Roller Rockers
- Factory High-Performance Cylinder Heads
- Steel Crankshaft
- Unilite Distributor
- Accel Ignition Coil
- Bug Catcher Intake Setup
- 500–600 RPM Idle Speed
- 4-Core Aluminum Radiator
- Dual Electric Cooling Fans
- 15-Gallon Fuel Cell
- Electric Fuel Pump
- Braided Fuel Lines
- Moroso Cool Can
- Fuel Pressure Gauges At Carburetors
- Reverse Manual Valve Body w/ Reverse Shift Pattern
- 3,400 RPM Stall Converter
- Detroit Locker Differential
- Chassis Engineering 4-Link Rear Suspension
- Engine Torque Safety Chain
- Professionally Installed Subframe Connectors
- Full Roll Cage w/ Swing-Out Side Bars
- Line Lock System Wired To Shifter Button
- Ceramic-Coated Hooker Competition Headers
- 4" Aluminum Exhaust System
- Mickey Thompson ET Street DOT-Approved 17.5" x 32.5" Rear Tires
- Racing Bucket Seats
- Five-Point Racing Harnesses
- AutoMeter Gauge Package
- Alpine Audio Head Unit
- Audison Amplifiers
- Trunk-Mounted Subwoofer Enclosure w/ Custom Installation
- Rear-Mounted Battery Disconnect / Master Power Shutoff Switch
- Current Owner Reports ~500 Miles Since Engine Build
- Current Owner Reports ~90,000 Miles On Body
- Current Owner Reports Original 360ci V8 & 4-Speed Car
This 1974 Plymouth Road Runner Pro Street Supercharged is a purpose-built street-and-strip muscle car combining classic Mopar styling with serious drag racing hardware. Originally a 340ci V8, this Road Runner has been transformed with a professionally built and balanced big block powerplant featuring a Dyer’s Machine Blower Company supercharger system, dual Holley carburetors, and an estimated 800 horsepower output. Designed for high-performance driving, it pairs its supercharged engine with a reverse-pattern 727 TorqueFlite automatic transmission, Detroit Locker differential, 4-link rear suspension, and Mickey Thompson ET Street tires. Finished in a vibrant Lime Green exterior with a competition-inspired setup including a full roll cage, racing harnesses, and upgraded chassis components, this Pro Street build represents the classic era of American horsepower taken to an extreme level.
Exterior and Interior
Finished in a striking Lime Green exterior, this 1974 Road Runner features an aggressive Pro Street stance with drag-inspired modifications throughout. The wide rear tire setup, performance-focused suspension, and muscular proportions highlight its street-strip purpose. Exterior highlights include the custom high-performance build, ceramic-coated Hooker Competition headers, 4-inch aluminum exhaust system, and rear-mounted battery disconnect system. The cabin has been outfitted with a driver-focused racing configuration while retaining street usability. Features include racing bucket seats, five-point racing harnesses, a full roll cage with swing-out side bars, AutoMeter gauge package, and a custom Alpine and Audison audio system with trunk-mounted subwoofer enclosure. The interior reflects the car’s dual personality as both a show-quality Pro Street build and a serious performance machine.
Engine
Power comes from a professionally built and balanced 440ci supercharged V8 producing an estimated 800 horsepower. Built by Dyer’s Machine Blower Company, the engine features a Dyer’s supercharger system, dual Holley 600 CFM carburetors, Bug Catcher intake setup, hydraulic roller valvetrain, roller rockers, factory high-performance cylinder heads, steel crankshaft, Unilite distributor, and Accel ignition coil. Supporting upgrades include a 4-core aluminum radiator, dual electric cooling fans, 15-gallon fuel cell, electric fuel pump, braided fuel lines, Moroso Cool Can, and carburetor-mounted fuel pressure gauges. The current owner reports approximately 500 miles since the engine build. The supercharged big block is backed by a 727 TorqueFlite 3-speed automatic transmission equipped with a reverse manual valve body, reverse shift pattern, and 3,400 RPM stall converter. Power is delivered through a Detroit Locker differential and chassis setup designed for hard launches, including Chassis Engineering 4-link rear suspension, professionally installed subframe connectors, engine torque safety chain, and Mickey Thompson ET Street DOT-approved rear tires. Additional performance equipment includes a line lock system wired to the shifter button and a full chassis reinforcement package.
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