Toyota 1GR-FE 4.0L V6 Supercharger Kit: The Complete Guide
Toyota 1GR-FE 4.0L Supercharger: Complete Guide
> Summary: The Toyota 1GR-FE 4.0L V6 is one of the most supercharger-friendly engines ever produced. With a cast-iron lined aluminium block, forged crankshaft, and conservative factory tune, the 1GR-FE responds exceptionally well to forced induction — delivering 39–52 % more power through a bolt-on kit with no internal modifications. This guide covers every 1GR-FE application, from the Land Cruiser 200 and LC70 Series to the FJ Cruiser, 4Runner, Prado, Hilux, and Lexus GX400.
What This Guide Covers
The 1GR-FE powers more Toyota and Lexus trucks than any other petrol V6 in the lineup. Whether you drive a Land Cruiser 200 on highway tours, wheel an LC79 through rock trails, or tow with a 4Runner, the supercharger path is the same proven platform — the VT Eaton TVS1320 positive-displacement system, purpose-engineered by AME Motorsport for every 1GR-FE variant.
This hub page walks through the engine architecture, explains why the 1GR-FE tolerates boost so well on factory internals, compares available supercharger options, and links directly to the vehicle-specific kit for your application.
The 1GR-FE Engine: A Technical Overview
Toyota introduced the 1GR-FE in 2002 and continued refining it across two decades of production. It remains one of the longest-running V6 platforms in the Toyota truck family.
Core Specifications
| Specification | Detail |
|---|---|
| Displacement | 3,956 cc (4.0L) |
| Configuration | 60° V6, DOHC, 24-valve |
| Valve Train | Dual VVT-i (intake and exhaust) |
| Block | Aluminium with cast-iron cylinder liners |
| Crankshaft | Forged steel |
| Bore × Stroke | 94.0 mm × 95.0 mm |
| Compression Ratio | 10.0:1 |
| Factory Power | 175–202 kW (varies by market and tune) |
| Fuel System | Sequential multi-point injection |
The nearly square bore-to-stroke ratio promotes efficient combustion and high volumetric efficiency. Dual VVT-i adjusts both intake and exhaust cam timing across the rev range, giving the engine strong torque spread from idle through redline.
Vehicles Powered by the 1GR-FE
- Toyota Land Cruiser 200 Series
- Toyota Land Cruiser 70 Series (LC70, LC76, LC78, LC79)
- Toyota Land Cruiser Prado (120 and 150 Series)
- Toyota FJ Cruiser
- Toyota 4Runner (4th and 5th Generation)
- Toyota Hilux (select markets)
- Lexus GX400 / GX470
Every one of these vehicles benefits from the same fundamental engine architecture — and the same supercharger platform.
Why the 1GR-FE Responds So Well to Forced Induction
Not every naturally aspirated engine is a good candidate for boost. The 1GR-FE is an exceptional one. Three design features make it unusually robust under supercharged conditions.
1. Cast-Iron Cylinder Liners
While the block itself is aluminium for weight savings, Toyota lined each cylinder bore with cast iron. This provides significantly greater resistance to the elevated cylinder pressures and temperatures that come with forced induction. The liners maintain dimensional stability under thermal cycling — a critical factor for long-term reliability at elevated power levels.
2. Forged Steel Crankshaft
Toyota specified a forged — not cast — crankshaft for the 1GR-FE. Forged cranks offer superior fatigue strength and can handle substantially higher torque loads without risk of failure. At the moderate boost levels delivered by the VT Eaton TVS1320 system (typically 5–7 psi), the factory crank operates well within its design margin.
3. Conservative Factory Calibration
The 1GR-FE leaves the factory with conservative ignition timing and rich fuel safety margins. This means the engine has significant headroom for additional airflow and fuel before approaching any mechanical or thermal limit. A properly calibrated supercharger kit exploits this headroom without pushing the engine beyond safe operating parameters.
The combination of these three factors is why AME Motorsport offers the 1GR-FE supercharger platform with full confidence in long-term durability — and why thousands of supercharged 1GR-FE engines operate reliably worldwide.
VT Eaton TVS1320 Supercharger Platform
The VT (Vehicle Technologies) Eaton TVS1320 system is the primary supercharger platform offered by AME Motorsport for the 1GR-FE. It is a roots-type positive-displacement supercharger built around the Eaton Twin Vortices Series rotor pack.
How TVS Technology Works
The TVS1320 uses four-lobe, 160° twisted rotors that compress air internally before discharging it into the intake manifold. This twist geometry reduces pressure pulsation and improves thermal efficiency compared to older roots-type blowers. The result is cooler charge air, less parasitic drag, and a broader, flatter torque curve.
For a deeper technical explanation of the rotor design and efficiency advantages, see the Eaton TVS Supercharger Technology page.
Kit Components
Every VT Eaton TVS1320 kit for the 1GR-FE ships as a complete bolt-on package:
- Eaton TVS1320 supercharger unit with CNC-machined intake manifold
- Water-to-air intercooler integrated into the manifold
- Intercooler pump and reservoir with all plumbing
- Multi-rib belt drive system with upgraded tensioner
- High-flow fuel injectors matched to increased airflow
- All gaskets, hardware, and brackets for OEM-quality fitment
- Vehicle-specific calibration for the factory ECU
No cutting, welding, or permanent modification to the vehicle is required. The kit installs using factory mounting points and can be reversed if needed.
Warranty and Reliability
The Eaton TVS1320 supercharger unit carries a 3-year warranty — a reflection of the engineering quality and durability testing behind the platform. AME Motorsport stands behind every kit with full technical support.
HKS Centrifugal Supercharger Option
For Land Cruiser 200 owners specifically, AME Motorsport also offers the Toyota Land Cruiser V6/4.0 HKS Supercharger Kit. This is a centrifugal-type supercharger that delivers boost progressively with RPM, rather than the instant low-end response of the roots-type VT system.
VT Eaton TVS1320 vs. HKS Centrifugal
| Feature | VT Eaton TVS1320 | HKS Centrifugal |
|---|---|---|
| Type | Positive displacement (roots) | Centrifugal |
| Boost Delivery | Immediate from idle | Progressive with RPM |
| Low-End Torque | Strong — ideal for towing and off-road | Moderate — builds through mid-range |
| Peak Power Band | Broad and flat | Peaks at higher RPM |
| Intercooling | Water-to-air (integrated) | Air-to-air |
| Best For | Off-road, towing, daily driving | Highway cruising, top-end power |
| Availability | All 1GR-FE models | Land Cruiser 200 only |
For most owners — particularly those who tow, drive off-road, or want the strongest possible low-RPM response — the VT Eaton TVS1320 is the recommended choice. The HKS kit suits drivers who prioritise high-RPM power delivery and prefer centrifugal supercharger characteristics.
Vehicle-by-Vehicle Application Guide
Every 1GR-FE application has a dedicated, vehicle-specific VT Eaton TVS1320 kit. Brackets, belt routing, and calibration are tailored to each chassis. Use the table below to find your vehicle.
| Vehicle | Kit | Approx. Power Gain | Link |
|---|---|---|---|
| Land Cruiser 200 (4.0L) | VT Eaton TVS1320 | ~39–50 % | LandCruiser 4.0 VT Supercharger Kit |
| Land Cruiser 200 (4.0L) | HKS Centrifugal | ~39–45 % | Toyota Land Cruiser V6/4.0 HKS Supercharger Kit |
| LC70 / LC76 / LC78 / LC79 | VT Eaton TVS1320 | ~42–52 % | LC70 4.0L VT Supercharger Kit |
| Land Cruiser Prado | VT Eaton TVS1320 | ~39–48 % | LandCruiser Prado 4.0 VT Supercharger Kit |
| FJ Cruiser | VT Eaton TVS1320 | ~40–50 % | Toyota FJ 4.0 Cruiser VT Supercharger Kit |
| 4Runner | VT Eaton TVS1320 | ~39–48 % | Toyota 4Runner 4.0 VT Supercharger Kit |
| Lexus GX400 | VT Eaton TVS1320 | ~39–48 % | Lexus GX400 VT Supercharger Kit |
| Hilux (4.0L) | VT Eaton TVS1320 | ~40–50 % | Contact AME Motorsport |
To browse the full range, visit All Supercharger Kits.
Performance Results Across the Platform
Dyno-verified results across the 1GR-FE platform consistently show 39–52 % gains in wheel horsepower and comparable torque increases. The variation depends on the specific vehicle's factory tune, exhaust configuration, altitude, and fuel quality.
What Owners Typically Experience
- Towing: Dramatically reduced gear hunting on grades. The engine pulls confidently in higher gears where it previously required downshifts. Drivers consistently report that the vehicle feels like it has moved up an engine class.
- Off-Road: Low-RPM torque is the defining advantage. Rock crawling, sand driving, and steep hill climbs benefit from the immediate throttle response of the TVS1320 system. There is no turbo lag and no waiting for boost to build.
- Highway: Overtaking confidence improves substantially. The supercharged 1GR-FE delivers strong mid-range acceleration that makes merging and passing far less stressful, particularly when loaded.
- Daily Driving: At light throttle, the supercharger adds minimal parasitic load. Fuel consumption at steady-state cruising remains close to stock. The power is available on demand without penalty during normal driving.
Installation Overview
Every VT Eaton TVS1320 kit is engineered as a true bolt-on system. A competent workshop with experience in engine accessories can complete the installation in a single day.
General Installation Process
- Remove the factory intake manifold and associated plumbing
- Install the supercharger unit with integrated intercooler manifold onto the engine using factory bolt locations
- Route the multi-rib drive belt through the new supercharger pulley and upgraded tensioner
- Connect the intercooler water circuit — pump, reservoir, and heat exchanger
- Install the upgraded fuel injectors
- Flash the vehicle-specific calibration to the factory ECU
- Verify operation, check for leaks, and perform a road test
No cutting or welding is required. No aftermarket engine management system is needed. The factory ECU retains full control of all engine functions, including VVT-i timing, knock detection, and closed-loop fuel correction.
AME Motorsport provides detailed installation documentation with every kit. Professional installation by an authorised dealer is recommended for warranty coverage.
Key Benefits of Supercharging the 1GR-FE
- 39–52 % more power without modifying engine internals
- Immediate torque delivery from the positive-displacement TVS design
- Water-cooled intercooling for consistent intake temperatures under sustained load
- Complete bolt-on fitment — no permanent vehicle modifications
- Factory ECU integration — retains all OEM safety systems and diagnostics
- 3-year Eaton warranty on the supercharger unit
- Proven platform — the 1GR-FE's forged crank and iron liners are built for boost
- Kits available for every 1GR-FE vehicle in the Toyota and Lexus range
Frequently Asked Questions
Will a supercharger void my factory warranty?
Warranty policies vary by dealer and region. In most cases, a supercharger does not automatically void the entire vehicle warranty. Dealers must demonstrate that a specific failure was caused by the supercharger modification before declining a warranty claim on that component. The Eaton TVS1320 unit itself carries its own 3-year warranty through AME Motorsport.
Do I need to upgrade the fuel system beyond what the kit includes?
No. Every VT Eaton TVS1320 kit includes upgraded fuel injectors matched to the increased airflow at the kit's designed boost level. The factory fuel pump provides adequate flow for the moderate boost levels used. No additional fuel system modifications are required.
How does the supercharger affect fuel economy?
At light throttle and steady cruising speeds, fuel consumption remains close to stock because the supercharger is not generating significant boost. Under heavy acceleration or sustained load (towing, off-road climbs), fuel consumption increases in proportion to the additional power being produced. Most owners report that the improved torque actually reduces overall fuel use during towing because the engine no longer needs to rev as high or downshift as frequently.
Can I run the supercharger on standard pump fuel?
Yes. The VT Eaton TVS1320 kits are calibrated for the fuel grade available in your market. The vehicle-specific calibration accounts for fuel octane rating, and the water-cooled intercooler keeps intake temperatures low enough to operate safely on standard fuel. Premium fuel is recommended where available for optimal performance.
Is the installation reversible?
Yes. Because the kit uses factory mounting points and requires no cutting or welding, it can be fully removed and the engine returned to stock configuration. This is relevant for owners who may need to return a leased vehicle to factory specification.
Find the Right Kit for Your Vehicle
AME Motorsport offers a dedicated VT Eaton TVS1320 supercharger kit for every 1GR-FE application. Select your vehicle below:
- Land Cruiser 200 (VT): LandCruiser 4.0 VT Supercharger Kit
- Land Cruiser 200 (HKS): Toyota Land Cruiser V6/4.0 HKS Supercharger Kit
- LC70 / LC76 / LC78 / LC79: LC70 4.0L VT Supercharger Kit
- Land Cruiser Prado: LandCruiser Prado 4.0 VT Supercharger Kit
- FJ Cruiser: Toyota FJ 4.0 Cruiser VT Supercharger Kit
- 4Runner: Toyota 4Runner 4.0 VT Supercharger Kit
- Lexus GX400: Lexus GX400 VT Supercharger Kit
Not sure which kit fits your vehicle? Browse All Supercharger Kits or contact AME Motorsport directly for guidance.