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Holley Sniper 2 EFI 650 HP Base Fuel Injection Systems 550-510-3XX System, 2, Self-Tuning, Throttle body, Polished, 4150 Flange, hp Max, 800 CFM, No Pump, 3.5 in. Display, Kit

SKU: SNE550-510-3XX

Fuel Injection Systems

Holley Sniper 2 EFI 650 HP Base Fuel Injection Systems 550-510-3XX System, 2, Self-Tuning, Throttle body, Polished, 4150 Flange, hp Max, 800 CFM, No Pump, 3.5 in. Display, Kit

SKU: SNE550-510-3XX

Fuel Injection Systems
A$3,280.70
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Holley Sniper 2 EFI Base Fuel Injection Systems are self-tuning, easy-to-install, EFI conversions for 4-barrel (4150 flange) style carburetors. They took everything that they learned from the original Sniper EFI system and added new features that will make your EFI conversion more simple, reliable, and modern. Like all Sniper EFI systems, Sniper 2 is designed to work with the Sniper Ecosystem that includes Hyperspark ignition, complete fuel systems, multiple user interfaces/dash displays, and more.

Make your classic drive like a modern fuel-injected vehicle, with easy cold starts, smooth drivability, and improved fuel economy! Sniper 2 is designed to be installed at home in your garage with limited tools and the support of Holley's comprehensive installation manual and videos. The user-friendly setup wizard allows you to answer a few simple questions about your engine—and the system will begin self-tuning with no laptop or tuning required. If you're looking for a high-performance fuel injection system that delivers power, efficiency, and ease of use, look no further than the Sniper 2 EFI.

Main features:
* Only 4 wiring connections required: Battery+, Battery-, Switched Ignition, and RPM
* Innovative clamping system allows you to locate the module anywhere in the tank beside your existing sending unit and can be rotated 360 degrees for easier clocking.
* Main harness includes plug-and-play HyperSpark distributor support for integrated timing control, making your ignition setup hassle-free
* Wide variety of tuning and gauge display options: from a 3.5 in. full-color LCD hand-held, 5 in. digital dash, or the Bluetooth dongle, which allows you to connect either an iOS or Android based cell phone to your Sniper 2
* Female -6 AN O-ring fittings
* Overall height is only 3.280 in.
* Supports up to 650 hp naturally aspirated or 575 hp on boost with four 100 lbs.-hr. injectors
* For applications using a vehicle specific EFI conversion tank and fuel pump, or already having a fuel system capable of the required 55-65 psi, these systems are offered without a pump and fuel lines
* Next generation ECU features improved RF noise and interference resistance (stands up to old car wiring, noisy alternators, faulty plug wires)
* Redesigned throttle shaft and plate geometry for a smoother throttle feel
* Integrated transmission kickdown provisions for GM TH350/400, 200-4R/700R4 and Ford C4/C6 applications
* "Hidden Harness" wiring exit from the rear of throttle body for a clean appearance
* Inputs and outputs consist of: 2x ground inputs, 2x ground outputs, 1x TPS output (0-5 V), and 1x tach output
* Redesigned injector connector for improved reliability
* Onboard contactless magnetic TPS sensor ensures an accurate TPS reading
* Next generation mil-spec style M8 positive lock connector for CAN1 and CAN2 provides the latest in CAN bus technology for a simple yet robust connection
* Cast-in fuel crossover from the primary to secondary fuel rail
* The included Bosch LSU 4.9 wideband oxygen sensor provides real-time fuel map learning
* Included clamp-on oxygen sensor kit ensures a leak-free oxygen sensor install with stainless steel T-bolt clamps and a stainless steel weldable oxygen sensor flange
* Sniper 2 throttle bodies are serialized, which provides an improved experience in the event of any unit needing to be inspected

Part Type

Fuel Injection Systems

Data: v4.2 - Upd: 2026-09-29 03:34:24

Specifications

Product Attributes - Brand
Holley Sniper
Product Attributes - Manufacturer's Part Number
550-510-3XX
Product Attributes - Part Type
Fuel Injection Systems
Product Attributes - Product Line
Holley Sniper 2 EFI 650 HP Base Fuel Injection Systems
Product Attributes - UPC
090127818923
Product Attributes - Fuel Injection Style
Throttle body
Product Attributes - Fuel Injection System Type
Single 4-Barrel Throttle Body (4150 Flange)
Product Attributes - Maximum Horsepower with Gas
650
Product Attributes - Timing Control Compatible
Yes
Product Attributes - ECM Included
Yes
Product Attributes - Self Tuning
Yes
Product Attributes - User Tunable
Yes
Product Attributes - Fuel System Included
None
Product Attributes - Ignition System Included
None
Product Attributes - Power Distribution Included
None
Product Attributes - User Interface Included
3.5 in. display
Product Attributes - EGR
No
Product Attributes - Transmission Controller Included
No
Product Attributes - Metering Style
Speed density
Product Attributes - Multi-Port Fuel Rails Included
No
Product Attributes - Throttle Body Included
Yes
Product Attributes - Throttle Body Mounting Flange
4-barrel square bore
Product Attributes - Venturi Quantity
4
Product Attributes - Airflow Rate (cfm)
800 cfm
Product Attributes - Throttle Body Material
Cast aluminum
Product Attributes - Throttle Body Color
Polished
Product Attributes - Injectors Included
Yes
Product Attributes - Injector Size (lbs/hr)
100 lbs./hr.
Product Attributes - Calibration Module Included
Yes
Product Attributes - Wiring Harness Included
Yes
Product Attributes - Oxygen Sensor Included
Yes
Product Attributes - Fuel Pressure Regulator Included
No
Product Attributes - MAP Sensor Included
Yes
Product Attributes - IAT Sensor Included
Yes
Product Attributes - TPS Sensor Included
Yes
Product Attributes - IAC Motor Included
Yes
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Kit includes 3.5 in. display.
Product Attributes - Special Attention
Fuel pump and plumbing kit sold separately.

Reference Information

Brand Name/s Holley Sniper
StreetFX SKU sne550-510-3XX
SFX Item ID 5013826
Supplier Item Code 5013826
Manufacturer SKU 550-510-3XX
Manufacturer UPC 90127818923
Alternative References SNI550-510-3XX

Compatibility

Application Data
  • UniversalYes
    Fuel TypeGAS
    Application NotesIncludes handheld with 3.5 in. screen and power distribution block.
    MakeAMERICAN MOTORS
    ModelREBEL
    SubmodelX
    Beginning Year1974
    Ending Year1968
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size5.6L/343
    Engine VersionN/R
    Engine VIN CodeZ
  • MakeAMERICAN MOTORS
    ModelREBEL
    SubmodelHURST SC/RAMBLER
    Beginning Year1969
    Ending Year1969
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size4.8L/290
    Engine VersionN/R
    Engine VIN CodeM
  • MakeAMERICAN MOTORS
    ModelREBEL
    SubmodelROGUE
    Beginning Year1969
    Ending Year1969
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size5.1L/309
    Engine VersionN/R
    Engine VIN CodeX
  • MakeAMERICAN MOTORS
    ModelREBEL
    Submodel550
    Beginning Year1969
    Ending Year1968
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size5.0L/304
    Engine VersionN/R
    Engine VIN CodeN
  • MakeAMERICAN MOTORS
    ModelREBEL
    Submodel550
    Beginning Year1969
    Ending Year1968
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size5.0L/304
    Engine VIN CodeH
    Engine VersionN/R
  • MakeAMERICAN MOTORS
    ModelREBEL
    Submodel550
    Beginning Year1969
    Ending Year1968
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size5.0L/304
    Engine VIN CodeX
    Engine VersionN/R
  • MakeAMERICAN MOTORS
    ModelREBEL
    Submodel770
    Beginning Year1974
    Ending Year1970
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size5.0L/304
    Engine VIN CodeS
    Engine VersionN/R
  • MakeAMERICAN MOTORS
    ModelREBEL
    SubmodelAMX
    Beginning Year1974
    Ending Year1968
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size5.6L/343
    Engine VIN CodeT
    Engine VersionN/R
  • MakeAMERICAN MOTORS
    ModelREBEL
    SubmodelBROUGHAM
    Beginning Year1974
    Ending Year1968
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size5.6L/343
    Engine VIN CodeZ
    Engine VersionN/R
  • MakeAMERICAN MOTORS
    ModelREBEL
    SubmodelBROUGHAM
    Beginning Year1974
    Ending Year1970
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size4.1L/250
    Engine VIN CodeN
    Engine VersionN/R
  • MakeAMERICAN MOTORS
    ModelREBEL
    SubmodelBROUGHAM
    Beginning Year1969
    Ending Year1974
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size4.8L/290
    Engine VIN CodeN
    Engine VersionN/R
  • MakeAMERICAN MOTORS
    ModelREBEL
    SubmodelBROUGHAM
    Beginning Year1969
    Ending Year1974
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size5.1L/309
    Engine VIN CodeP
    Engine VersionN/R
  • MakeAMERICAN MOTORS
    ModelREBEL
    SubmodelBROUGHAM
    Beginning Year1969
    Ending Year1974
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size6.4L/390
    Engine VersionN/R
    Engine VIN CodeS
  • MakeAMERICAN MOTORS
    ModelREBEL
    SubmodelSUPER
    Beginning Year1960
    Ending Year1960
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size4.1L/250
    Engine VersionN/R
    Engine VIN CodeT
  • MakeAMERICAN MOTORS
    ModelREBEL
    SubmodelTHE MACHINE
    Beginning Year1974
    Ending Year1974
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size5.0L/304
    Engine VersionN/R
    Engine VIN CodeH
  • MakeAMERICAN MOTORS
    ModelREBEL
    SubmodelTHE MACHINE
    Beginning Year1974
    Ending Year1971
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size6.4L/390
    Engine VersionN/R
    Engine VIN CodeX
  • MakeAMERICAN MOTORS
    ModelREBEL
    SubmodelTHE MACHINE
    Beginning Year1974
    Ending Year1974
    Engine TypeV8
    Engine FamilyAMC V8 GAS
    Engine Size6.4L/390
    Engine VersionN/R
    Engine VIN CodeY
  • MakeBUICK
    ModelAPOLLO
    SubmodelX
    Beginning Year1974
    Ending Year1974
    Engine TypeV8
    Engine FamilyBuick V8
    Engine Size5.7L/350
    Engine VIN CodeY
    Engine VersionN/R
  • MakeBUICK
    ModelAPOLLO
    SubmodelX
    Beginning Year1974
    Ending Year1965
    Engine TypeV8
    Engine FamilyBuick V8
    Engine Size5.7L/350
    Engine VIN CodeP
    Engine VersionN/R
  • MakeBUICK
    ModelAPOLLO
    SubmodelX
    Beginning Year1974
    Ending Year1966
    Engine TypeV8
    Engine FamilyBuick V8
    Engine Size5.7L/350
    Engine VIN CodeJ
    Engine VersionN/R
  • MakeBUICK
    ModelAPOLLO
    SubmodelX
    Beginning Year1974
    Ending Year1974
    Engine TypeV8
    Engine FamilyBuick V8
    Engine Size5.7L/350
    Engine VIN CodeJ
    Engine VersionN/R
  • MakeBUICK
    ModelAPOLLO
    SubmodelX
    Beginning Year1975
    Ending Year1975
    Engine TypeV8
    Engine FamilyOldsmobile V8
    Engine Size5.7L/350
    Engine VIN CodeX
    Engine VersionOldsmobile
  • MakeBUICK
    ModelAPOLLO
    SubmodelCUSTOM
    Beginning Year1975
    Ending Year1975
    Engine TypeV8
    Engine FamilyOldsmobile V8
    Engine Size5.7L/350
    Engine VIN CodeJ
    Engine VersionOldsmobile
  • MakeBUICK
    ModelCENTURION
    SubmodelX
    Beginning Year1974
    Ending Year1968
    Engine TypeV8
    Engine FamilyBuick V8
    Engine Size7.5L/455
    Engine VIN CodeS
    Engine VersionN/R
  • MakeBUICK
    ModelCENTURION
    SubmodelX
    Beginning Year1974
    Ending Year1968
    Engine TypeV8
    Engine FamilyBuick V8
    Engine Size7.5L/455
    Engine VersionN/R
    Engine VIN CodeT

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