The Holley Off-Road Truck Avenger 670 CFM carburetor is purpose-built for off-road applications. Its unique fuel metering block eliminates fuel spillover through the boosters at extreme angles, allowing 40-degree climbs, 30-degree side-hill maneuvers, and nose-down descents without hesitation, stalling, or flooding. A quick-change vacuum secondary housing makes fine-tuning easy, and it's well suited to small block or stock big block engines.
Specifications:
- CFM: 670
- Model: 4150
- Secondaries: Vacuum
- Choke: Electric, factory preset
- Finish: Gold Dichromate
- Material: Aluminum
- Fuel Type: Gasoline
- Fuel Inlet: Single
- Flange Type: Square/4150
- Carburetor Use: Off-Road
- Throttle Bore: 1.563 inch
- Primary Jet: 68
- Primary Power Valve: 2.5
- Secondary Jet: 89
- Vacuum Ports: 1 timed (spark), 2 full, 1 PCV
- Warranty: Manufacturer's Limited Lifetime Warranty
- Part Number: 0-90670
Compatible with GM, Chrysler, and Ford automatic-transmission kickdown linkage (additional parts may be required). A one-piece off-road vent tube helps prevent fuel spillover during extreme maneuvers. Due to natural variations in the dichromate plating process, plating color may vary between carburetors — this is normal, not a defect.
FAQ
What is the Off-Road Truck Avenger designed for?
It's built specifically for off-road use, with a metering block that resists fuel spillover during steep climbs, side-hill maneuvers, and nose-down descents.
What angles can this carburetor handle without flooding or stalling?
Up to 40 degrees while climbing and 30 degrees during side-hill maneuvers.
Does it work with automatic transmission kickdown linkage?
Yes, it's compatible with GM, Chrysler, and Ford A/T kickdown linkage, though additional parts may be required.
Why does the finish vary between units?
Natural variations in the dichromate plating process can cause slight color differences from casting to casting; this is normal and not a defect.
