Fuel Injector Clinic 660cc High-Z Fuel Injector Set (ish03-0660h-sp) - Holley GM Composite Intake
Upgrade your Holley GM composite intake with the precise fuel delivery and dependable control of the Fuel Injector Clinic 660cc High-Z Fuel Injector Set. Part number ish03-0660h-sp includes eight saturated, high-impedance injectors rated at 660cc/min, or 62 lbs/hr, at 43.5 PSI and 72 lbs/hr, or 765cc/min, at the OE 58 PSI fuel pressure. Built with modern injector technology, these injectors deliver excellent linearity and short pulse width repeatability, giving performance GM combinations increased fuel capacity while maintaining the control needed for smooth idle, responsive part-throttle operation, and strong drivability.
Fuel Injector Clinic precisely flow matches each ish03-0660h-sp injector set to within 1 percent. Every injector is individually numbered, and the results for each injector are documented on the detailed flow sheet supplied with the set. FIC flow tests and rates these injectors at 43.5 PSI using CF-16B calibration fluid maintained at 90 degrees F. Superior short pulse width control and tight manufacturing tolerances help make the injectors straightforward to tune, while plug-and-play GM ECU data is available from Fuel Injector Clinic to further support accurate calibration.
Specifications
- Manufacturer: Fuel Injector Clinic
- Part Number: ish03-0660h-sp
- Application: Holley GM composite intake
- Injector Quantity: 8
- Flow Rating: 660cc/min at 43.5 PSI (3 Bar)
- Flow Rating at 43.5 PSI: 62 lbs/hr
- OE Fuel Pressure Rating: 72 lbs/hr, or 765cc/min, at 58 PSI (4 Bar)
- Impedance: High impedance / High-Z
- Injector Type: Saturated
- Flow Matching: Precisely flow matched to within 1 percent
- Testing Pressure: 43.5 PSI (3 Bar)
- Testing Fuel Temperature: 90 degrees F
- Calibration Fluid: CF-16B
- Pigtail Option: PGTUSC8
- Optional Plug-and-Play Adaptor: PADPUtoJ8
- ECU Data: Plug-and-play GM ECU data available from Fuel Injector Clinic
- Warranty: Lifetime warranty against failure caused by defects in original manufacture
Features
- Eight 660cc/min high-performance fuel injectors
- 62 lbs/hr flow rating at 43.5 PSI fuel pressure
- 72 lbs/hr, or 765cc/min, flow rating at OE 58 PSI fuel pressure
- Saturated, high-impedance injector design
- Designed for Holley GM composite intake applications
- Excellent injector linearity across the operating range
- Strong short pulse width repeatability for consistent fuel control
- Precisely flow matched to within 1 percent
- Each injector is individually numbered
- Detailed flow sheet documents the results for each injector in the matched set
- Superior short pulse width control helps support smooth idle and part-throttle operation
- Tight manufacturing tolerances provide consistent performance and help simplify accurate tuning
- Flow tested at 43.5 PSI and 90 degrees F using CF-16B calibration fluid
- Plug-and-play GM ECU data available from Fuel Injector Clinic
- Includes the O-rings required for the intended application
- PGTUSC8 pigtail option available for the injector set
- Optional PADPUtoJ8 plug-and-play adaptor available for compatible harness configurations
- Backed by Fuel Injector Clinic's lifetime warranty against failures caused by original manufacturing defects
Fitment
Designed for Holley GM composite intake applications. Fitment is based on the intake, fuel rail, wiring, and overall fuel system configuration rather than a specific vehicle year, make, or model. If your combination uses aftermarket fuel rails, a modified intake, or another unusual fuel system configuration, contact Beefcake Racing before ordering to verify proper injector fitment and connection requirements.
FAQs
What is the flow rate of the Fuel Injector Clinic ish03-0660h-sp injector set?
The ish03-0660h-sp injectors are rated at 660cc/min, or 62 lbs/hr, at 43.5 PSI (3 Bar) fuel pressure. At the OE 58 PSI (4 Bar) fuel pressure, they are rated at 72 lbs/hr, or 765cc/min.
Why is flow matching important for the ish03-0660h-sp injector set?
Fuel Injector Clinic precisely flow matches each set to within 1 percent and individually numbers the injectors, with the results documented on the included flow sheet. Combined with tight manufacturing tolerances and superior short pulse width control, consistent injector-to-injector fueling gives the ECU and tuner a more predictable foundation for accurate calibration and strong drivability.
Why Buy Fuel Injector Clinic Injectors From Beefcake Racing?
Choosing the right injector means matching flow capacity with the intake, fuel pressure, fuel rails, electrical connections, and tuning requirements of your combination. Beefcake Racing can help you determine whether the Fuel Injector Clinic ish03-0660h-sp is the right match for your Holley GM composite intake and performance goals. For fitment, fuel system, or ordering assistance, email sales@beefcakeracing.com or call 1-855-827-7223.
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