1977 Porsche 911 1974-1977 for Sale – Viper Green Twin-Plug

The 1977 Porsche 911 1974-1977 combines the compact proportions of a classic air-cooled 911 with an extensive collection of performance-focused modifications. Repainted in vibrant Viper Green over a black interior, this example adopts RSR-inspired styling and a purposeful competition-influenced stance. Its twin-plug 3.2-liter flat-six features 46mm PMO electronic-fuel-injection throttle bodies and works with a 915 five-speed manual transaxle. Upgraded brakes, modified suspension, distinctive Speedline wheels, and supporting documentation complete a highly individualized Porsche designed around driver engagement.

View the official listing below.

1977 Porsche 911 1974-1977 for sale

Engine and Performance

Power comes from a twin-plug 3.2-liter flat-six equipped with 46mm PMO electronic-fuel-injection throttle bodies for responsive and precise induction. A 915 five-speed manual transaxle delivers the engine’s output to the rear wheels, while a limited-slip differential helps manage traction during committed acceleration. A front-mounted oil cooler supports temperature control, an important consideration for a more powerful air-cooled engine intended for enthusiastic road use. The custom exhaust system provides an appropriately purposeful outlet while complementing the mechanical intensity of the upgraded flat-six configuration.

Engineering and Specifications

Front braking employs 993 Turbo-specification calipers and rotors, while 964-specification rear calipers act on 930-specification rotors for substantial stopping capability. A 930-specification master cylinder and stainless-steel brake hoses support this mixed-component system, and the steering rack has also been reconditioned. Modified suspension works with 18-inch multi-piece Speedline wheels and Hankook Ventus Sport K104 tires to establish the car’s aggressive stance and focused dynamic character.

Design and Heritage

Viper Green paint gives the classic narrow-cabin silhouette exceptional presence while drawing attention to the car’s carefully selected motorsport-inspired details. RSR-style bumpers, a ducktail decklid, H4 headlights, and wide multi-piece wheels transform the exterior without disguising its unmistakable 911 foundation. The result interprets Porsche competition heritage through a personalized roadgoing build that combines features associated with several important air-cooled generations.

Driving Experience

Sparco seats, RS-style door panels, a Hargett shifter, and a 930S-style steering wheel create an interior centered on direct physical involvement. A 964 dashboard introduces a later air-cooled visual element, while a Kenwood stereo adds entertainment without dominating the purposeful cabin. The responsive throttle bodies, close driver controls, five-speed transmission, limited-slip differential, and upgraded chassis systems promise an intense experience shaped by sound, feedback, and rear-engine traction.

Why This Car Is Special

• The twin-plug 3.2-liter flat-six combines increased displacement with individual PMO electronic-fuel-injection throttle bodies.
• Its five-speed 915 transaxle and limited-slip differential maintain the direct control expected from an enthusiast-built air-cooled Porsche.
• Viper Green paint, RSR-style bumpers, and a ducktail decklid create a bold competition-inspired exterior presentation.
• Braking components from the 993 Turbo, 964, and 930 families provide a carefully assembled high-performance system.
• A Porsche Certificate of Authenticity, service records, and refurbishment photographs supply valuable supporting documentation.

Specifications

• Twin-plug 3.2-liter air-cooled flat-six with 46mm PMO EFI throttle bodies.
• Type 915 five-speed manual transaxle and limited-slip differential.
• Repainted Viper Green exterior with black upholstery and RSR-inspired body components.
• Eighteen-inch multi-piece Speedline wheels with Hankook Ventus Sport K104 tires.
• Modified suspension, upgraded four-wheel disc brakes, front oil cooler, and custom exhaust.

Collector and Enthusiast Appeal

The 1977 Porsche 911 1974-1977 offers enthusiasts a distinctive interpretation of the air-cooled formula, blending classic proportions with substantial performance hardware. Its vivid finish, powerful twin-plug engine, manual gearbox, upgraded braking system, and focused cockpit create an especially memorable specification. Documentation including service records, refurbishment images, and a Porsche Certificate of Authenticity gives future custodians useful context for understanding, maintaining, and enjoying this personalized build.

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The 1977 Porsche 911 1974-1977 unites vivid Viper Green styling, twin-plug flat-six performance, manual control, and thoughtfully assembled chassis upgrades in one dramatic air-cooled machine. It represents an appealing opportunity for a driver seeking an extensively personalized classic Porsche with RSR character, meaningful documentation, and performance components drawn from several respected 911 generations.