Description
FiTech Ultimate LS 1000 HP EFI System Master Kit
Complete standalone electronic fuel injection, ignition, and transmission management system for Cathedral Port LS engines up to 1,000 HP.
The FiTech Ultimate LS 1000 HP EFI Master Kit (PN 78631) delivers an all-in-one induction and fuel delivery solution designed to streamline your LS swap or high-performance rebuild. Built specifically for GM Cathedral Port LS1, LS2, LS6, and truck engine cylinder heads, this master system features a low-profile, TIG-welded 3mm sheet metal aluminum intake manifold optimized for a 1,500-6,500 RPM powerband.
This master package eliminates guesswork by combining a cable-operated 102mm billet aluminum throttle body, 80 lb/hr flow-matched injectors, integrated 4L60/4L65/4L80/4L85 automatic transmission control, Go-Spark LS3 coil pack set, dual Bosch wideband O2 sensors, and a Go Fuel 440 LPH in-tank fuel pump module suitable for gas tanks from 6″ to 15″ deep.
Quick Specs
- Max Power: Up to 1,000 Flywheel HP
- Intake Style: Short Cathedral Port
- Throttle Body: 102mm Cable-Driven
- Fuel Pump: 440 LPH In-Tank Module
- MAP Sensor: Integrated 3-Bar (Up to 30 PSI Boost)
Key Features
- ☑ High-flow 3mm TIG-welded sheet metal intake manifold engineered for maximum airflow and low hood clearance.
- ☑ Cable-operated 102mm billet aluminum throttle body with idle air control and throttle position sensors.
- ☑ Self-learning ECU technology with color touchscreen handheld controller for on-the-fly tuning.
- ☑ Integrated transmission control module for GM 4L60E, 4L65E, 4L80E, and 4L85E automatic gearboxes.
- ☑ Complete Go Fuel 440 LPH in-tank pump module adjustable for tank depths from 6″ to 15″.
- ☑ Go Fuel Tight Fit billet regulator with 0-100 PSI pressure gauge and high-volume fuel rails.
- ☑ Go-Spark LS3 performance coil pack set and plug-and-play wiring harness for 24X and 58X reluctor wheels.
- ☑ 3-Bar MAP sensor automatically supports forced induction setups up to 30 PSI of boost.
Technical Specifications
| Brand | FiTech Fuel Injection |
|---|---|
| Manufacturer Part Number | 78631 |
| Head Compatibility | Cathedral Port (LS1, LS2, LS6, LR4, LM4, LM7, LQ4, LQ9) |
| Max Horsepower Rating | 1,000 HP |
| RPM Power Band | 1,500 – 6,500 RPM |
| Intake Material | 3mm Fabricated TIG-Welded Aluminum |
| Throttle Body | 102mm Billet Aluminum (Cable Driven) |
| Fuel Injector Rating | 80 lbs/hr Flow-Matched |
| Fuel Delivery System | 440 LPH In-Tank Pump Module (6″ – 15″ Tank Depth) |
| Pressure Regulator | Billet Tight Fit Regulator with 0-100 PSI Gauge |
| Transmission Support | GM 4L60E, 4L65E, 4L80E, 4L85E Control |
| Reluctor Wheel Compatibility | 24X and 58X Crank & Cam Sensors |
What’s Included in the Box
- Fabricated Short Cathedral Port Intake Manifold & Billet Fuel Rails
- 102mm Cable-Operated Throttle Body with TPS and IAC Sensors
- 80 lb/hr Flow-Matched Fuel Injectors (Set of 8)
- Self-Learning LS ECU & Touchscreen Controller with Windshield Mount
- Plug-and-Play Wiring Harness & Transmission Control Sub-Harness
- Go Fuel 440 LPH In-Tank Fuel Pump Assembly & Filter Socks
- Go Fuel Billet Pressure Regulator with 0-100 PSI Fuel Pressure Gauge
- Go-Spark LS3 Coil Pack Set and Spark Plug Wire Connectors
- Dual Bosch Wideband O2 Sensors & Weld-In/Clamp Oxygen Sensor Bungs
Engineered by FiTech Fuel Injection to simplify high-performance engine management, the 78631 Master Kit delivers total tuning control without requiring expensive dyno hours. Order from JP Racing today for verified motorsport expertise, dedicated technical advice, and fast UK delivery.
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