6.2L High-RPM N/A LS daily-driver engine packages built specifically for the 996 and 997 chassis

An LS swap can make a 996 or 997 dramatically faster. It can also make the car feel like someone dropped a truck engine behind the seats.

RAD Porsche Powertrain Solutions are built to avoid that.

Each package starts with a 6.2L aluminum LS and is developed around the way a Porsche should make power: fast throttle response, a broad pull through the middle of the tach, and real power on the top end. The engine should keep charging where a conventional crate motor is already running out of breath.

The powerband is matched to Porsche gearing rather than built around a huge low-RPM torque hit. That makes this engine easier on the transaxle, more predictable at the limit, and much more rewarding to run through the gears.

Beyond performance, it still has to work as a street car.

Clean startup. Stable idle. Crisp throttle response. No bucking through town, no stalling every time the clutch goes in, and no raw-fuel stink. These are aggressive naturally aspirated combinations, but they are tuned to work in traffic, on a road trip, and at the track.

This is also much more than a crate engine or long block. The induction system, fuel rails, injectors, ignition, Porsche-specific oiling, plug-and-play standalone ECU, Porsche CAN integration, wiring, flex-fuel system, dyno tune, and supporting engine-side hardware are developed as part of the package.

Choose Your Package

RAD Porsche Strada

The refined street package.

Strada is built for the owner who wants a major step up from the original flat-six or a mild crate-engine swap without giving up clean street manners. It delivers quick response, a broad naturally aspirated powerband, and strong high-RPM pull while remaining the most civilized package in the lineup.

• 450+ RWHP potential
• 7,500+ RPM stability
• Refined idle and exhaust note
• Strong, linear power delivery
• Crisp throttle response
• Prepped cylinder heads
• Excellent street manners
• Well suited to regular driving, road trips, and track days

RAD Porsche Feroce

The aggressive street package.

Feroce adds more camshaft, more sound, and a harder charge through the upper half of the tach. It has a sharper idle and a more serious personality than Strada, but it is still built to start, idle, and drive like a properly sorted street car.

• 500+ RWHP potential
• 7,700+ RPM stability
• More aggressive idle and exhaust note
• Stronger midrange and top-end pull
• Prepped cylinder heads
• More noticeable performance character
• Street-friendly drivability
• Built for the customer who wants the car to feel substantially quicker and more aggressive

RAD Porsche Competizione

The top-spec naturally aspirated package.

Competizione is the rowdiest combination in the lineup. It adds CNC-ported cylinder heads and the airflow, camshaft, and valvetrain needed to keep pulling to 8,000 RPM. This is the package for the customer who wants maximum naturally aspirated power, sound, and presence.

• 550+ RWHP potential
• 8,000+ RPM stability
• CNC-ported cylinder heads
• Most aggressive camshaft and exhaust character
• Strongest midrange and top-end performance
• Maximum naturally aspirated RPM capability
• The hardest-edged package in the lineup
• Still tuned as a usable street-driven powertrain

Standard Package Content

6.2L Engine Assembly

Every RAD Porsche package is built around a fixed-displacement 6.2L aluminum LS engine.

• 6.2L aluminum LS-based engine
• Fully disassembled, cleaned, inspected, and measured
• Blueprinted engine assembly
• Forged pistons
• Forged connecting rods
• Performance piston-ring package
• Upgraded main and rod bearings
• Balanced rotating assembly
• Package-specific RAD naturally aspirated camshaft
• True link-bar-style lifters
• Custom-length pushrods
• Matched valve springs
• Upgraded retainers and valve locks
• Valvetrain selected for the intended RPM range
• Upgraded timing components
• Upgraded oil pump
• New gaskets and seals
• Required fasteners and assembly hardware
• Clearances set for high-RPM naturally aspirated use

Cylinder Heads and Valvetrain

• Professionally prepared aluminum cylinder heads
• Performance valve job
• Valve-guide inspection and correction as required
• Combustion chambers inspected and prepared
• Valve-spring installed height checked
• Spring pressure verified
• Coil-bind clearance checked
• Retainer-to-seal clearance checked
• Piston-to-valve clearance checked
• Rocker-arm geometry checked
• Valvetrain matched to the camshaft and intended RPM range
• Prepped cylinder heads on Strada and Feroce
• CNC-ported cylinder heads on Competizione

Porsche-Specific Oiling System

The 996/997 installation requires more than an off-the-shelf LS oil pan.

Every package includes a Porsche-specific oiling setup developed around the rear-engine chassis and the demands of sustained high-RPM use.

• Porsche-specific front-sump oil pan
• Matched oil pickup
• Custom windage tray
• Custom crank scraper
• Proprietary Porsche-specific oil-system modifications
• Dipstick and dipstick tube
• Oil filtration provisions
• Oil pressure sensor
• Oil temperature sensor
• Engine-side oiling hardware
• Oil-control setup developed for high-RPM naturally aspirated use

Intake and Throttle Body

• Performance short-runner intake manifold
• Intake runner design selected to improve midrange and high-RPM airflow
• 102mm drive-by-wire throttle body
• Throttle-body mounting hardware
• Manifold pressure sensor
• Intake air temperature sensor
• Supporting intake hardware
• Intake system matched to the engine’s power and RPM range

Fuel System Components

• High-flow fuel rails
• Properly sized fuel injectors
• Injector size matched to the package power level
• Flex-fuel sensor
• Flex-fuel capability standard on every package
• Fuel pressure sensor
• Engine-side fuel fittings
• Supporting fuel-system hardware
• Tune developed for gasoline and ethanol-content changes

Ignition System

• High-output ignition coils
• Coil mounting hardware
• Performance spark-plug wires
• Correct spark plugs for the engine combination
• Plug heat range selected for the package
• Ignition timing developed around the final compression, fuel, and RPM range

Plug-and-Play ECU and Porsche Integration

• Plug-and-play standalone ECU
• Complete engine wiring harness
• Drive-by-wire throttle control
• Porsche CAN integration
• Crankshaft and camshaft sensor inputs
• MAP sensor input
• Intake air temperature input
• Engine coolant temperature input
• Wideband oxygen sensor
• Fuel pressure monitoring
• Oil pressure monitoring
• Oil temperature monitoring
• Flex-fuel input
• Fuel-pump control provisions
• Cooling-fan control provisions
• Configured rev limiter
• Engine protection strategies
• Data logging
• Defined connection points for the Porsche chassis and installing shop

Dyno Tuning

Every package is tuned as a complete engine combination rather than delivered with a generic startup file.

• Initial startup tune
• Cold-start tuning
• Warm-up tuning
• Idle tuning
• Part-throttle tuning
• Drive-by-wire throttle tuning
• Acceleration enrichment tuning
• Closed-loop fuel tuning
• Flex-fuel tuning
• Wide-open-throttle fuel tuning
• Wide-open-throttle ignition tuning
• Rev-limiter setup
• Engine protection setup
• Final dyno tune
• Remote tuning support after installation

Break-In and Dyno Testing

• Controlled initial startup
• Oil pressure verification
• Cooling-system verification
• Leak inspection
• Sensor and wiring checks
• Engine break-in
• Progressive load testing
• Full operating-temperature testing
• Part-throttle testing
• High-RPM testing
• Wide-open-throttle dyno pulls
• Review of logged engine data
• Final power and torque documentation
• Final inspection before delivery

Documentation and Support

• Engine build documentation
• Major component specifications
• ECU and tune documentation
• Sensor and wiring reference information
• Startup guidance
• Installation guidance
• Recommended fluids
• Break-in and service information
• Remote startup and tuning support

Whether the goal is the refined Strada, the harder-edged Feroce, or the 8,000-RPM Competizione, every RAD Porsche package is built around the same idea:

Make the LS feel like it belongs in the Porsche—not like a crate engine that happened to fit.

RAD — Engineered Powertrain Solutions. Ready to Drive.