Fuel Injection System Avenger EFI Multi-Point Fuel Injection System Avenger EFI Multi-Point Fuel Injection System; 4 bbl; Single Plane; Chevy Big Block V8; 1000 cfm; Standard Deck; Oval Port Heads; 48 lbs./hr. Fuel Injectors; Range Up To 650 HP; SPECIFICATIONS: Engine Make/Size: Chevy Big Block (396-502) Fuel Rate: 48 lbs./hr Cylinder Head Type: Oval Port- Standard FEATURES: Self-Tuning Fueling Strategy While You Drive Requires No Laptop Computer To Set Up Or Tune Includes Full Color LED Hand-Held Tuner Offers Simple Setup And Easy Tuning Dedicated Fuel And Oil Pressure Inputs Can Be Upgraded To HP EFI System If Desired Allows For Computer Controlled Ignition Timing If Desired Avenger multi-point EFI systems for small or big block Chevys are ready for the street or strip with the simple swap of an intake whether you have a stock engine, crate or custom-built engine, avenger multi-point systems can help you maximize performance and the avenger's self-tuning capabilities will get you to the cruise or race in no time. Avenger multi-point systems include: intake manifold, billet throttle body, ECU, wiring harness, fuel rails, injectors, fuel pump and related small parts. Set up is done on the included hand-held tuner so no laptop is required. Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress-up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Exhaust, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.