Part # 550-869K
$2,362.95
The Sniper EFI Quadrajet™ is here to help with classic installs, perfect for not having enough hood clearance to mount an adapter or don’t want to replace your OEM spread bore intake. Our bolt-on spread bore electronic fuel injected throttle body system does not require any additional adapters, sealing plates, or intake manifold swaps. The Sniper EFI Rochester™ Quadrajet™ (Q-Jet) system retains the same great features as the 4150 Sniper EFI version with (4) 100 lb./hr. fuel injectors, built-in timing control, 3.5" LCD touchscreen, and much more. For power, this throttle body will support up to 500 HP naturally aspirated. In addition, 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 appearance installation. After you’ve installed your EFI, use our included 3.5" handheld to answer a few simple questions and your system will begin to self-tune with no laptop required. With the fuel kit included, you'll enure your entire system will be at peak performance.
Features & Benefits
Included Holley P/N 526-12 that includes a fuel pump, fuel pressure regulator, fuel filters, supply and return hose, hose fittings, clamps, and bulkhead fitting to return into the fuel tank
Fits: Supports Up To 500 HP - 3.5 in. LCD Touchscreen - For Spreadbore Manifold - Return Fuel System
Installation note: Installing in a marine setup? Go with Holley P/N 550-869 instead.
In the box: Fuel Filter, Fuel Hose, Fuel Injectors, Fuel Pressure Regulator, Fuel Pump, Throttle Position Sensor
| Accelerometer Support | No |
| Boost Control | No |
| CAN-BUS Support | No |
| CFM | 715 |
| Coast Guard Approved | Yes |
| Coil Per Cylinder Ignition Support | No |
| Datalogging Support | Yes |
| Dry Nitrous Control | Yes |
| EGT Support | No |
| Finish | Classic Gold |
| Flange Style | Spreadbore |
| Forced Induction Support | Yes |
| Fuel Pressure | 58.5 PSI |
| Fuel Pump Flow Rating | 240 LPH |
| Fuel Pump Type | Inline |
| 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) |
| Knock Retard Support | No |
| MAP Sensor | 2 Bar |
| Max Horsepower Rating | 500 Naturally Aspirated |
| Multi-Stage Nitrous Control | Yes |
| Progressive Nitrous Control | Yes |
| Self-Tuning | Yes |
| Throttle Bore | 1.375 Primary / 2.00 Secondary |
| Traction Control Support | No |
| Transmission | 700R4/200R4 |
| User-Tuneable | Yes |
| Wet Nitrous Control | Yes |
| e85 Support | No |
The EFI Brain
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