Fuel Injector Clinic 1650cc High Impedance Fuel Injector Set for 1983-1986 Buick Regal T-Type & 1984-1987 Buick Grand National (IS309-1650H)
When your turbo Buick demands serious fuel delivery without sacrificing street manners, the Fuel Injector Clinic IS309-1650H 1650cc High Impedance Fuel Injector Set is ready for the challenge. Designed specifically for the legendary Buick Regal T-Type and Grand National, this matched set of six top-feed injectors provides the fueling capacity required for today's high-horsepower gasoline and E85 combinations while maintaining the outstanding idle quality and drivability Fuel Injector Clinic is known for.
Built around Fuel Injector Clinic's latest high impedance ball and seat injector technology, the IS309-1650H delivers exceptional linearity, superior short pulse width repeatability, and industry-leading cylinder-to-cylinder consistency. Every injector is individually serial numbered and dynamically matched using Fuel Injector Clinic's proprietary Data Match Technology, with each set including a detailed Data Match Sheet containing injector-specific flow and latency values for precise ECU calibration.
The 1650cc high impedance injector is Fuel Injector Clinic's largest high impedance injector that is compatible with virtually all popular performance fuels. Featuring a durable stainless alloy valve construction, these injectors provide excellent idle characteristics while supporting substantial horsepower on pump gasoline, E85, Q16, VP Import, FTW, MTBE oxygenated race fuels, and other racing fuels. To maximize long-term reliability, Fuel Injector Clinic utilizes brand-new injectors instead of remanufactured cores. As a result, injector pigtails are included for wiring conversion, while optional plug-and-play adapter harnesses are available separately for installations that require no cutting or soldering.
Quick Specs
- Part Number: IS309-1650H
- Injector Flow Rate: 1650cc/min
- Injector Quantity: 6
- High impedance (saturated) ball and seat injectors
- Top-feed injector design
- Fuel Injector Clinic Data Match Technology dynamic flow matching
- Each injector individually serial numbered
- Detailed Data Match Sheet with injector-specific flow and latency values included
- Flow tested at 43.5 PSI (3 Bar) using CF-16B calibration fluid at 90 degrees Fahrenheit
- Compatible with pump gasoline, E85, Q16, VP Import, FTW, MTBE oxygenated race fuels, and other performance fuels
- Stainless alloy valve construction
- Application-specific O-rings included
- Injector pigtails included for wiring conversion
- Optional plug-and-play adapter harnesses available separately
- Lifetime warranty against manufacturing defects
Features
- Designed specifically for turbocharged Buick Regal T-Type and Grand National applications
- 1650cc high impedance injectors support demanding high-horsepower street and race combinations
- Largest Fuel Injector Clinic high impedance injector compatible with virtually all popular performance fuels
- Excellent idle quality despite massive fuel flow capacity
- Superior short pulse width repeatability for improved drivability and tuning accuracy
- Fuel Injector Clinic Data Match Technology provides industry-leading injector consistency
- Compatible with pump gasoline, E85, Q16, VP Import, FTW, MTBE oxygenated race fuels, and other performance fuels
- Stainless alloy valve construction for outstanding durability and fuel compatibility
- Includes injector pigtails for wiring harness conversion
- Optional plug-and-play adapter harnesses available for no-cut installation
- Brand-new injectors eliminate the risks associated with remanufactured cores
- Backed by Fuel Injector Clinic's lifetime warranty against manufacturing defects
Fitment
- 1983 Buick Regal T-Type
- 1984 Buick Regal T-Type
- 1985 Buick Regal T-Type
- 1986 Buick Regal T-Type
- 1984 Buick Grand National
- 1985 Buick Grand National
- 1986 Buick Grand National
- 1987 Buick Grand National
FAQs
Can these injectors be used with E85 and race fuels?
Yes. Thanks to their stainless alloy valve construction, the IS309-1650H is compatible with pump gasoline, E85, Q16, VP Import, FTW, MTBE oxygenated race fuels, and virtually all commonly used high-performance fuels while maintaining excellent idle quality.
Will these injectors plug directly into my factory wiring harness?
No. Because Fuel Injector Clinic uses brand-new injectors instead of remanufactured factory-style units, a connector conversion is required. Injector pigtails are included for soldering into the factory harness, while optional plug-and-play adapter harnesses are available separately for a no-cut installation.
Why Buy From Beefcake Racing?
Beefcake Racing proudly supplies genuine Fuel Injector Clinic products backed by competitive pricing, fast shipping, and expert technical support. Whether you're restoring a classic Grand National or building a four-digit horsepower turbo Buick, our knowledgeable team can help you select the ideal injectors and supporting fuel system components for your combination.
Need help selecting the right injector size for your Buick build?
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
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