3001 Fully Assembled 335cc Enforcer Cylinder Head Big Block Chevy
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AFR - AIRFLOW RESEARCHPART NUMBER: 033-3001

3001 Fully Assembled 335cc Enforcer Cylinder Head Big Block Chevy

$84150$935.00You Save$93.50
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Chevy Big Block
Fully Assembled 335cc Enforcer Cylinder Head
  • Big Block Chevy
  • 122cc Combustion Chamber
  • 24°/4° Intake, 15°/4° Exhaust Valve Angles
  • A356 Aluminum
  • Sold Individually

    Breakdown of Included Items

    Flow Chart

    Features:

    • For 509 to 540ci engines operating below 6,500 rpm
    • Intake Port Volume: 335cc
    • Intake Port Dimension: 2.510 in. Height x 1.820 in. x 3/8 in. Radius
    • Intake Port Location: Stock
    • Exhaust Port Volume: 140cc
    • Exhaust Port Dimension: 1.690 in. H x 1.900 in. W
    • Exhaust Port Location: .357 in. Raised
    • Valve Spring Pocket Diameter: 1.750 in. O.D
    • Max Valve Spring Pocket Machining: 1.750 in. O.D
    • Deck Thickness: .450 in.
    • Minimum Bore Diameter: 4.250 in.
    • Reduce Combustion Chamber Size 1 cc by Flat-Milling .006 in. from Deck Surface, Maximum Mill .102 in. to achieve 105 cc.
    • Angle Mill: Reduce Combustion Chamber Size 1 cc by Flat-Milling .009 in. from Deck Surface, Maximum Mill .198 in. to achieve 100 cc. (Angle Milling will require the use of a .120 in. Thick Intake Gasket)
    • Spark Plug Dimensions: 14 mm x .750 in. with Gasket Seat Such as Autolite 417-AR3924 (sold separately) 

    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

    • AFR Enforcer Cylinder Heads

      AFR Enforcer Cylinder Heads are engineered to deliver improved airflow, increased horsepower potential, and dependable street performance for enthusiasts building high-performance small block and big block engine combinations. Designed by AFR Airflow Research, these cylinder heads provide an excellent balance of airflow efficiency, combustion performance, and affordability, making them a popular choice for street performance builds, restoration projects, muscle cars, and weekend racers. Whether you're upgrading a small block Chevy Camaro, building a Ford street machine, or refreshing a classic Mopar muscle car, AFR Enforcer Cylinder Heads offer the performance-focused engineering serious enthusiasts expect from AFR.

      Show More

      Cylinder heads play a critical role in determining engine airflow efficiency, combustion quality, and overall horsepower capability. AFR Enforcer Cylinder Heads are designed using advanced port and chamber technology to improve intake and exhaust flow characteristics compared to restrictive factory castings. Performance enthusiasts appreciate the ability to gain stronger throttle response, improved torque output, and enhanced top-end power while maintaining excellent street drivability and long-term reliability.

      Performance Benefits & Key Features

      AFR Enforcer Cylinder Heads are engineered to optimize airflow velocity and combustion efficiency for naturally aspirated street and mild racing applications. Their precision-designed intake runners and combustion chambers help improve cylinder filling and fuel atomization, contributing to increased horsepower and torque across a broad RPM range.

      Constructed from lightweight aluminum, these cylinder heads help reduce overall engine weight while improving heat dissipation and thermal stability compared to traditional cast iron designs. Enthusiasts benefit from improved cooling efficiency, reduced detonation risk, and enhanced engine responsiveness during aggressive driving conditions.

      These cylinder heads are commonly paired with aftermarket camshafts, intake manifolds, carburetors, EFI systems, and performance exhaust setups to maximize engine output and overall drivability. AFR Enforcer Cylinder Heads are especially popular for street performance builds, Pro Touring projects, drag racing applications, hot rods, and restoration vehicles where dependable power gains and consistent engine performance are priorities.

      Performance enthusiasts also value AFR’s reputation for CNC-inspired airflow development and precision manufacturing quality. The Enforcer series provides an accessible performance upgrade while still delivering the airflow improvements and engineering precision associated with AFR cylinder head technology.

      Fitment, Compatibility & Applications

      AFR Enforcer Cylinder Heads are compatible with a wide variety of GM, Ford, and Mopar V8 engine applications used in muscle cars, classic trucks, street rods, and custom performance vehicles. Popular applications include Camaros, Mustangs, Chevelles, Chargers, Novas, hot rods, and street/strip builds requiring improved airflow and modern cylinder head technology.

      Ideal for street performance enthusiasts, restoration builders, and weekend racers seeking dependable horsepower gains and improved engine efficiency, these cylinder heads deliver the quality and airflow performance expected from AFR Airflow Research. Explore the available AFR Enforcer Cylinder Head options to upgrade your engine with proven airflow technology and enhanced street performance.

    Part TypeCylinder Head
    Product LineAFR Enforcer Cylinder Heads
    BrandAFR - AIRFLOW RESEARCH
    Package Height7.7
    Package Width11.3
    Package Length24.7
    Weight43.53 PG
    Part CategoryPerformance Parts
    Valve Springs IncludedYes
    Cylinder Head MaterialAluminum
    Intake Port LocationStandard
    Intake Valves IncludedYes
    QuantitySold individually
    Valve Stem Seals IncludedYes
    Exhaust Valves IncludedYes
    Exhaust Port LocationStandard
    Retainers IncludedYes
    Rocker Arms IncludedNo
    Rocker Arm Studs IncludedYes
    Cylinder Head StyleAssembled
    Cylinder Head FinishNatural
    Part FitmentSemi Universal
    Intake Runner Volume (Cc)335
    Cnc-Machined Combustion ChamberYes
    Vendor Part Number3001
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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