Fuel Injector Clinic 850cc High Impedance Fuel Injector Set for LS3, LS7, LSA, L76, L92 & L99 Engines (IS303-0850H)
Take your GM Gen IV LS engine to the next level with the Fuel Injector Clinic IS303-0850H injector set. Designed for LS3, LS7, LSA, L76, L92, and L99 engines, this complete set of eight saturated high impedance fuel injectors delivers the increased fuel capacity required for serious naturally aspirated and forced induction combinations without sacrificing idle quality or drivability. Built using the latest injector technology, these injectors offer exceptional linearity and precise short pulse width control for reliable performance on both the street and the track.
Every IS303-0850H injector set is dynamically matched using Fuel Injector Clinic's proprietary Data Match Technology. Each injector is individually serial numbered and accompanied by a detailed Data Match Sheet containing comprehensive flow matching and latency information to simplify ECU calibration. These injectors feature direct drop-in factory plug fitment, eliminating the need for wiring modifications, while Plug and Play GM ECU calibration data is available directly from Fuel Injector Clinic. This injector set was previously offered as the 770cc version and has been updated to today's 850cc specification.
Quick Specs
- Manufacturer: Fuel Injector Clinic
- Part Number: IS303-0850H
- Previous Rating: Previously offered as the 770cc injector set
- Application: LS3, LS7, LSA, L76, L92, and L99 Engines
- Injector Quantity: Set of 8
- Injector Type: Saturated High Impedance (High-Z)
- Flow Rate: 850 cc/min (81 lb/hr) @ 43.5 PSI (3 Bar)
- Flow Rate: 980 cc/min (94 lb/hr) @ 58 PSI (4 Bar)
- Installation: Direct drop-in factory plug fitment
- Matching Technology: Fuel Injector Clinic Data Match Technology
- Flow Testing: Tested at 43.5 PSI (3 Bar) using CF-16B calibration fluid at 90 degrees Fahrenheit
- ECU Support: Plug and Play GM ECU calibration data available from Fuel Injector Clinic
- Included: Comprehensive Data Match Sheet
- Included: All required O-rings for the factory application
- Warranty: Lifetime manufacturer warranty
Features
- Designed for LS3, LS7, LSA, L76, L92, and L99 engine applications.
- Complete set of eight saturated high impedance fuel injectors.
- 850 cc/min (81 lb/hr) flow rate at 43.5 PSI (3 Bar).
- 980 cc/min (94 lb/hr) flow rate at the OE 58 PSI (4 Bar) fuel pressure.
- Direct drop-in factory plug fitment.
- No wiring modifications or adapter harnesses required.
- Utilizes the latest Fuel Injector Clinic injector technology.
- Matched using proprietary Data Match Technology.
- Each injector is individually serial numbered.
- Includes a detailed Data Match Sheet with flow matching and latency values.
- Excellent linearity and superior short pulse width control.
- Outstanding idle quality and street drivability.
- Plug and Play GM ECU calibration data available.
- Includes all required O-rings for factory installation.
- Backed by Fuel Injector Clinic's lifetime manufacturer warranty.
Fitment
LS3 Engines
LS7 Engines
LSA Engines
L76 Engines
L92 Engines
L99 Engines
FAQs
Do these injectors require wiring modifications?
No. The IS303-0850H uses direct drop-in factory plug fitment, allowing installation without modifying the factory wiring harness.
Why does this injector mention a previous 770cc rating?
The IS303-0850H replaces Fuel Injector Clinic's earlier 770cc offering. It is now rated at 850 cc/min while maintaining the same high-quality construction, Data Match Technology, and excellent drivability that FIC is known for.
Why Buy From Beefcake Racing?
Beefcake Racing is an Authorized Fuel Injector Clinic dealer, offering genuine FIC fuel system components backed by expert technical support, competitive pricing, and fast shipping. Whether you're upgrading an LS3 street car or building a high-horsepower LSA-powered project, our experienced team can help you select the ideal injectors and supporting fuel system components.
Need assistance choosing the correct injector size? Contact our knowledgeable team before placing your order.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
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