Holley; 770 CFM 4 BBL; Off Road; Truck Avenger Carburetor

The Off-Road Truck Avenger is designed specifically for off-road applications. The unique fuel metering block eliminates fuel spillover through the boosters at extreme angles allowing for 40 degree climbing, 30 degree side hill maneuvers and nose-down descents to avoid hesitations, stalling and flooding typically associated with carbs in an off-road environment.

The 670 CFM Off-Road Truck Avenger is the perfect carburetor for small blocks or stock big block engines.

• Gold Dichromate finish for extreme off road environments
• Single feed fuel inlet for ease of installation
• Optimized off-road calibration that works out-of-the-box
• Factory preset electric choke for easy startups
• Vacuum secondaries allow use on a wide variety of vehicles. Quick Change vacuum housing cap allows you to tune for performance or fuel economy (springs included)
• Compatible with GM, Chrysler, and Ford A/T kickdown linkage. Additional parts may be required.
• One piece off-road vent tube eliminates fuel spillover during extreme maneuvers
• Intended for off-road/off-angle use. Unique metering block designed for flood free operation up to 40º while climbing and 30º during side hill maneuvers & "nose down" decents
• Limited lifetime warranty - Guaranteed to be free from defects in material and workmanship for the life of the product!
• 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

• Barrels: 4
• Booster: Annular / Straight
• CFM: 770
• Choke: Electric
• Finish: Dichromate Gold
• Fuel: Gasoline
• Fuel Inlet: Single
• Model: 4150
• Primary Main Jet: 74
• Primary Power Valve: 2.5
• Primary Pump Nozzle Size: 35
• Secondaries: Vacuum
• Secondary Main Jet: 99
• Supercharged Application: No
• Throttle Bore: 1.688"
• Vacuum Ports: 1 timed (spark) port, 2 full, and 1 PCV port

Important: Not for use on pollution controlled vehicles. See Emission Notes below.

For (PPCV) Pre-Pollution Controlled Vehicles Only: Legal for use on all vehicles that were manufactured before emissions control regulations were imposed. Check your state law before ordering.

For Racing Use Only: This product is intended for vehicles that are exclusively designated as a racing or off-road vehicle only. This product is not legal for use on vehicles that are operated on public highways. Not for use on a street-driven vehicle.

• 1965 and Older, USA Manufactured, California Certified Vehicles
• 1967 and Older, USA Manufactured, Federally Certified Vehicles