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Sniper EFI 550-869 Quadrajet Self-Tuning Fuel Injection System Classic Gold 715 CFM 500 HP

(GMC G2500 1979, K1500 1979, C1500 1979, K2500 1979, Jimmy 1970-79, C3500 1979, K2500 Suburban 1979, K3500 1979, C15/C1500 Pickup 1967-74 + 150 more models)

Manufacturer

Picture for manufacturer Sniper EFI

Part Number

550-869
8 reviews
Sale Price

$1,799.95

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Sniper EFI 550-869 Quadrajet Self-Tuning Fuel Injection System in Classic Gold finish brings modern EFI performance to your classic muscle car or hot rod while maintaining the iconic Rochester Quadrajet appearance. This complete bolt-on system features a 715 CFM throttle body with four 100 lb/hr fuel injectors supporting up to 500 naturally aspirated horsepower.

Key Features:

  • Integrated throttle body-mounted ECU eliminates external boxes for a cleaner engine bay
  • Fits most stock Rochester Quadrajet air cleaners for seamless installation
  • 3.5-inch LCD color touchscreen handheld controller with intuitive calibration wizard - no laptop required
  • Bosch LSU 4.9 wideband oxygen sensor enables real-time fuel map learning and optimization
  • Simple 4-wire installation: Battery+, Battery-, 12V switched ignition, and RPM signal
  • Built-in fuel pump relay wire for direct pump control
  • Three ground trigger outputs for accessories including cooling fans and air conditioning
  • Engineered to deliver the signature Rochester roar at wide open throttle
  • Includes universal throttle cable bracket, transmission kickdown bracket, and brake booster adapter

This system is certified to ISO 8846, SAE J1171, and United States Coast Guard requirements for ignition protection and fire resistance, making it suitable for marine applications. The self-learning technology continuously adjusts fuel delivery for optimal performance across all driving conditions, while the handheld controller provides real-time gauge displays and tuning parameters at your fingertips.

Products specifications

Fits

GMC G2500 1979, K1500 1979, C1500 1979, K2500 1979, Jimmy 1970-79, C3500 1979, K2500 Suburban 1979, K3500 1979, C15/C1500 Pickup 1967-74, C2500 1979, K1500 Suburban 1979, G25/G2500 Van 1967-74, C1500 Suburban 1979 + 146 more models

Accelerometer Support

No

Boost Control

No

Brand

Holley Sniper EFI

CAN-BUS Support

No

Category

Air and Fuel Delivery

CFM

715

Coast Guard Approved

Yes

Coil Per Cylinder Ignition Support

No

Datalogging Support

Yes

Distributor Included

No

Dry Nitrous Control

Yes

e85 Support

No

EGT Support

No

Emission Code

3

Finish

Classic Gold

Flange Style

Spreadbore

Forced Induction Support

Yes

Fuel Filter Included

No

Fuel Hose Included

No

Fuel Injectors Included

Yes

Fuel Pressure

58.5 PSI

Fuel Pressure Regulator Included

No

Fuel Pump Included

No

Grade Type

Performance

Height

3.28"

Ignition Timing Control

Yes

Individual Cylinder Fuel Corrections

No

Injector Size

100 lb/hr @ 58.5 PSI

Inlet / Outlet Size

9/16-18 Female O-Ring (AN 6)

Intake Manifold Included

No

Knock Retard Support

No

MAP Sensor

2

Max Horsepower Rating

500 Naturally Aspirated

Multi-Stage Nitrous Control

Yes

Part Type

Fuel Injection Conversion Kit

Product Type

Sniper EFI Quadrajet

Progressive Nitrous Control

Yes

Self-Tuning

Yes

Sub Category

Service Kits

Throttle Bore

1.375 Primary / 2.00 Secondary

Throttle Position Sensor Included

Yes

Traction Control Support

No

Transmission

700R4/200R4

User-Tuneable

Yes

Warning

California Proposition 65

Wet Nitrous Control

Yes

Easy and fast! Thanks!

My product came on time and in excellent condition. I couldn't have asked for more.

All good

Thanks!

Fast delivery

Thanks for the quick response

2409c are in stock as of 2 days ago l talked to jay at hotchkiss it should be up dated on website. Please let me know asap . Thanks

Good product like described

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