Modified 1983 Porsche 911SC with 3.2L Twin-Plug Engine

Heavily modified under previous ownership, this air-cooled icon boasts a twin-plug 3.2-liter flat-six, a five-speed manual transaxle, and an aggressive, race-inspired setup. Now listed on Bring a Trailer with no reserve, this stunning Leaf Green 911SC is ready to find its next home.

Performance-Enhanced 3.2L Flat-Six

Originally equipped with a 3.0L engine, this 911SC underwent a serious power upgrade, increasing displacement to 3.2 liters. Performance modifications include dual PMO 46mm carburetors, twin-plug cylinder heads, MSD ignition components, and a Patrick Motorsports twin-plug distributor. The rebuild also included new pistons, connecting rods, bearings, timing chains, and engine seals. A carbon-fiber rain hat setup protects the carburetors, while an M&K Exhaust muffler ensures an aggressive sound signature. Tuned for 93-octane fuel, this setup delivers a thrilling driving experience.

Power is sent to the rear wheels through a Type 915 five-speed manual transaxle, paired with a limited-slip differential for optimal traction. The transmission was recently refreshed, featuring a Clutch Masters clutch and upgraded mounts. To handle spirited driving, a front skid plate has been installed, protecting the undercarriage.

Designed for precision handling, this 911SC features a QuickChange front X-brace, RSR adjustable front and rear sway bars, and Von Shocks Street coilovers. Stopping power comes from Brembo cross-drilled disc brakes with red calipers, ensuring confidence-inspiring braking performance. The car rides on satin black 16-inch Group 4 “Campy” wheels, wrapped in Toyo Proxes R888R performance tires for maximum grip.

Originally finished in a different color, the car has been refinished in a striking Leaf Green, complemented by satin black powder-coated trim. The exterior features a fiberglass ducktail rear spoiler, EB Motorsport SCRS narrow bumpers, yellow headlight lenses, and an Ächtung Kraft billet side mirror setup. The center hood fuel filler adds a vintage racing touch, while twin central exhaust outlets complete the aggressive look. There are minor paint cracks on the front bumper, but overall, the bodywork presents beautifully.

Race-Inspired Interior with Modern Refinements

Inside, the cabin balances vintage aesthetics with modern performance upgrades. The Cobra Nogaro bucket seats feature black vinyl with tan plaid cloth centers, paired with Schroth Racing Profi II ASM harnesses for added safety. A matching plaid dashboard insert, RS door panels, and Rennline aluminum floorboards and pedals enhance the motorsport feel. Additional highlights include a WEVO short shifter with a wooden knob, a roll bar, and a push-button ignition. In keeping with its lightweight, driver-focused ethos, the car has no heat or air conditioning provisions.

Instrumentation and Mileage

A Max Papis Innovations leather-wrapped steering wheel frames a rotated 7k-rpm tachometer, a 170-mph speedometer, and additional gauges monitoring oil level, oil temperature, oil pressure, and fuel level. The six-digit odometer displays 190,000 miles, with approximately 200 miles added by the selling dealer.

Auction Details

This 1983 Porsche 911SC Coupe is currently listed with no reserve on Bring a Trailer, offering enthusiasts the chance to own a meticulously modified air-cooled classic. The sale includes service records, parts receipts, an accident-free Carfax report, and a clean Massachusetts title.

With its stunning colorway, high-performance upgrades, and race-inspired interior, this 911SC is an unmissable opportunity for Porsche purists and collectors alike. Don't miss your chance to bid on this unique, performance-tuned icon!