Hi-Torq 383 Pro-Flo XT EFI 9.5:1 (408 HP & 450 TQ)

Hi-Torq 383 Pro-Flo XT EFI 9.5:1 (408 HP & 450 TQ) Crate Engine by Edelbrock
  • Engine Specifications:
  • Displacement: 383 c.i.d.
  • Horsepower: 408 hp
  • Torque: 450 ft-lbs.
  • Compression: 9.5:1
  • Block: New 4 bolt main with 1-piece rear seal
  • Crankshaft: Forged steel
  • Pistons: Hypereutectic
  • Camshaft: Rollin' Thunder Hydraulic Roller #2209
  • Rocker Arms: 1.5:1 Roller
  • EFI System: Pro-Flo XT #3528
  • Cylinder Heads: E-Tec 170 #609715 or #60975
  • Throttle Body: Edelbrock #3869
  • Distributor: Included
  • Valve Covers: Cast aluminum - style varies by application
  • Finish: Polished or Black
  • Warranty: 2-year / Unlimited mileage
This fuel injected 383 cubic inch small-block delivers horsepower, torque and increased mileage potential in street rods, muscle-cars or any demanding off-road vehicle. The unique Rollin' Thunder hydraulic roller camshaft delivers broad torque throughout the RPM range and up to 17" of vacuum at as low as 650 rpm!

The ultra-modern Pro-Flo XT fuel injection system is complete with intake manifold, fuel injectors, fuel rails and throttle body, electronic engine control unit (ECU), easy-to-use handheld calibration module, distributor, pre-terminated two-piece EFI harness, and all necessary fuel system components.

Your choice of polished or black powder coated finish. Short valve covers available upon request.

Application Dyno Emissions Polished Black
Hi-Torq 383 Pro-Flo XT EFI (without water pump) 46381 46383

The following guide is designed to help you determine which Edelbrock components are legal for use on your vehicle. Learn more about Edelbrock Product Emissions Guide.

    50-State Legal
    For Racing Use ONLY
    For Use on Pre-Pollution Controlled Vehicles (PPCV)
    Stock Replacement Part
    Engine Swaps