COMING SOON - Chop Gun 911 - RAD 6.2L Porsche LS Swap Powertrain Solut

Call sign: Chop Gun 911. Porsche 996/997.

525+ HP | Naturally Aspirated 6.2L | Includes Engine, ECU, Porsche CAN Integration, Wiring & Final Tune.

Late-stage development · Expected early Q4 2026 · Estimated starting price: $14,499

You hear Chop Gun before you see the car. In a 911, that hot-rod idle coming from behind the seats is part of the appeal. Roll into the throttle and the thick, immediate pull of a 6.2L LS follows through. It gives the Porsche unmistakable V8 character every time you start it, with the street manners to drive it as often as you like.

RAD builds this version of Chop Gun for the 996/997 installation. The fully blueprinted engine comes with Porsche-specific oiling, head fasteners, engine management, wiring, CAN integration, and a completed tune. Your installer gets a defined package to put in the car; you get to enjoy the sound and performance without turning the engine itself into another development project.

525+ advertised engine horsepower
Mid-400s+ rear-wheel horsepower in a 911
Broad, naturally aspirated torque and immediate throttle response
Distinctive hot-rod idle with excellent street drivability
Fully disassembled, measured, machined, and blueprinted
Porsche-specific front-sump oiling and upgraded cylinder-head fasteners
Flex-fuel-ready fueling
Includes ECU, Porsche wiring, CAN integration, sensors, and completed RAD tune
Broken in and dyno tested before delivery

Hot-Rod Sound. Street-Car Manners.

Chop Gun brings a different kind of fun to the 911. It has a noticeable chop at idle and a broad surge of torque whenever you ask for it. Around town, the completed engine and tune keep the car easy to start, smooth to maneuver, and enjoyable at ordinary road speeds.

Cold start, warm-up, idle, part-throttle response, and wide-open-throttle fueling receive the same attention as full-power operation.

Fully Blueprinted 6.2L Engine

Each Porsche Chop Gun starts with a 6.2L aluminum LS that is disassembled, cleaned, inspected, and measured. Machining and cylinder finishing are performed as required, then the engine is assembled with clearances checked for the finished combination.

Engine Assembly

6.2L aluminum LS engine
New pistons and performance piston rings
New main, rod, and cam bearings
Upgraded oil pump and timing components
Performance harmonic damper
Upgraded cylinder-head fasteners for the Porsche installation
New gaskets, seals, and critical assembly hardware
Measured bearing, piston, and ring clearances

Cylinder Heads and Valvetrain

Inspected and prepared aluminum cylinder heads
RAD-selected street-performance camshaft
New hydraulic roller lifters and pushrods
Valve springs matched to the camshaft
Verified spring installation and valvetrain clearances
RAD-logo valve covers

Induction and Fuel

Street-oriented intake manifold and drive-by-wire throttle body
Fuel rails and ethanol-compatible fuel injectors
Flex-fuel sensor
Fuel-pressure monitoring
Spark plugs selected for the engine combination

Porsche-Specific Oiling

Chop Gun includes the engine-side oiling hardware specified for the rear-engine 996/997 installation:

Front-sump oil pan with matched pickup
Upgraded oil pump
Windage tray and crank scraper
Dipstick and oil-filtration provisions
Oil-pressure and oil-temperature monitoring
Startup oil and filter supplied for installation

ECU, Porsche Wiring & Final RAD Tune

The included standalone ECU, engine harness, Porsche wiring interface, and CAN integration are specified with the engine. RAD’s completed tune covers startup, idle, normal driving, throttle response, flex-fuel operation, and full-throttle performance.

Every engine is broken in and dyno tested before delivery. Vehicle-specific accessories and remaining installation hardware can be selected to suit the car.

Chop Gun brings Saturday-night V8 character to the 911, with the refinement to drive to work Monday morning.

RAD — Engineered Powertrain Solutions. Ready to Drive.

Photos are representative. Some standard included items—including the ECU, harness, Porsche CAN interface, sensors, and startup oil and filter—are not shown. Some pictured engine accessories, including ignition coils, rear engine/Porsche exhaust manifolds and SFI approved damper are not included and/or optional. Contact RAD today to confirm your package configuration and build your engine.