Holley Quadrajet Self Tuning Kit Sniper EFI Classic Gold



  • Improved Engine Performance
  • For Quadrajet Manifolds
  • Stealthy Carburetor Looks
  • Gold Finish
MSRP $1,474.00
You save 10%

Holley Classic Gold Sniper EFI Quadrajet Self Tuning Kit.

Want the benefits of EFI without swapping out your Quadrajet spreadbore manifold? Holley has you covered! This direct-fit Sniper EFI Kit offers a stealthy "carburetor" appearance plus the fuel economy, throttle response, and overall performance gains of EFI.

Features and Benefits:
- Classic Gold Finish
- Designed to Deliver the Signature Rochester Roar at Wide Open Throttle
- Throttle body Mounted ECU – no extra boxes to mount
- Supports up to 500hp with Four 100 Lb/Hr Injectors!
- Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
- Integrated Ignition Timing Control
- Transmission Provisions on Throttle Lever for TH350/TH400 and 200R4/700R4
- Fits most Stock Rochester Quadrajet (Q-Jet) Air Cleaners
- Simple Calibration Wizard
- No laptop required
- Self-Tuning ECU
- OEM Style Throttle Position Senser (TPS)/ and Idle Air Control (IAC) for reliable service

This is the first EFI throttle body system from Holley that does not require any additional adapters, sealing plates or intake manifold swaps! The Sniper EFI Rochester Quadrajet (Q-Jet) system has the same great features as the 4150 Sniper EFI version such as the four 100lb/hr Injectors, built-in timing control and a 3-1/2" full-color touchscreen.

The throttle body will support up to 500 horsepower naturally aspirated. In addition to all of these great tried and true features, the Sniper EFI Rochester Quadrajet (Q-Jet) system will fit most stock air cleaners and offers multiple fuel inlet configurations that allow for a stock appearing installation!

This Kit Includes:
- Classic Gold Quadrajet Flange Sniper EFI Throttle Body
- High Resolution Full Color 3-1/2” Touchscreen Controller
- Main Harness and Ignition Adapter
- Output Harness
- Air Cleaner Gasket
- Coolant Temperature Sensor
- Clamp-on Oxygen Sensor Bung with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange
- Bosch Wide LSU 4.9 Wideband Oxygen Sensor
- Brake Booster Adapter
- Universal Throttle and Transmission Kickdown Bracket

- CFM: 715
- Finish: Classic Gold
- Flange Style: Spreadbore
- Fuel Pressure: 58.5psi
- Height: 3.28”
- Injector Size: 100lb/hr @58.5 psi
- Inlet/Outlet Size: 9/16”-18 Female O-Ring (AN 6)
- Map Sensor: 2 Bar
- Max Horsepower Rating: 500HP
- Throttle Bore: 1.375 Primary/2.00 Secondary

California Residents: Proposition 65 Warning

Installation Difficulty


Intermediate skill is required for this installation.

Vehicle Fitment

This product will fit the following C10 years:

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