Description
The FiTech Retro LS 650 HP Classic Gold EFI w/ Pump & Regulator (36271) merges classic aesthetics with modern fuel injection technology. Designed for LS engines, this system provides the performance and reliability of EFI while retaining the appearance of a traditional carburetor. This all-in-one kit includes a complete fuel delivery setup, simplifying the conversion process.
KEY FEATURES AND BENEFITS:
- High Power Capability: Engineered for engines producing up to 650 horsepower.
- Semi-Sequential Fuel Control: Offers full spark control for precise engine management.
- Classic Aesthetic: Unique vintage look with a classic gold finish.
- Transmission Control: Integrated control for GM 4L60/80E transmissions for customized shift points.
- Consistent Fuel Delivery: Includes an in-tank 340 LPH fuel pump and adjustable regulator.
- User-Friendly Tuning: Handheld tuner simplifies adjustments, eliminating the need for a laptop.
SPECIFICATIONS:
- Maximum Horsepower: 650 HP
- Injection Style: Throttle body
- Timing Control: Yes
- ECU Included: Yes
- Fuel Pump Included: Yes (In-tank)
- Transmission Controller: Yes
- Metering Style: Speed density (MAP-N)
- Throttle Body Mounting Flange: 4-barrel square bore
- Venturi Diameter: 44 mm
- Airflow Rate: 950 CFM
- Injector Size: 80 lbs/hr
- Fuel Pressure Regulator: Adjustable (30-70 psi)
HOW TO USE:
- Preparation: Ensure your LS engine is ready for EFI conversion. Disconnect the battery.
- Installation: Mount the gold throttle body to the intake manifold. Install the in-tank fuel pump and regulator.
- Wiring: Connect the pre-terminated wiring harness to the engine sensors and ECU. Connect the transmission control wiring.
- Sensor Setup: Install the oxygen sensor, MAP sensor, IAT sensor, and TPS sensor.
- Fuel Lines: Connect the fuel supply and return lines to the regulator and fuel pump.
- ECU Mounting: Mount the remote ECU in a suitable location.
- Handheld Tuner: Connect the handheld tuner and follow the on-screen instructions to set up the system.
- Initial Setup: Input engine parameters into the tuner.
- Testing: Start the engine and monitor performance. Adjust settings as needed using the handheld tuner.
- Final Adjustments: Test drive the vehicle and make final adjustments to ensure optimal performance.
BENEFITS OF USING THE FITECH RETRO LS 650 HP CLASSIC GOLD EFI w/ PUMP & REGULATOR (36271):
- Improved Performance: Enhances engine performance and throttle response.
- Fuel Efficiency: Promotes enhanced fuel efficiency and reduced emissions.
- Vapor Lock Elimination: Resolves common issues like vapor lock and fuel varnish.
- Simplified Installation: Easy setup and tuning process.
- Reliable Operation: Ensures consistent and reliable engine performance.
- Customizable Shifts: Transmission control allows fine-tuning of shift points.
FEATURES:
- Annular Discharge Design: For efficient fuel atomization.
- Flow-Matched Injectors: 80 lbs/hr injectors for precise fuel delivery.
- Wideband Oxygen Sensor: Bosch sensor for accurate air-fuel ratio monitoring.
- Compatibility: Works with 24x and 58x crank and cam signals.
- Mounting Flange: 4150-style 4-barrel mounting flange for easy installation.
- Touch Screen Controller: Handheld controller for user-friendly tuning.
- Consistent Fuel Delivery: In-tank fuel pump and adjustable regulator included.
- Simplified Wiring: Pre-terminated wiring harness for easy installation.
- Classic Gold Finish: Adds a vintage aesthetic to your engine bay.
- Speed Density Metering: MAP-N metering style for efficient engine management.






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