375-500 CNC-Ported Cylinder Head for Big Block Chevy Engines, 375 cc Intake Ports, 127 cc Combustion Chambers [Bare]
InfoVehicle Info Needed
FLOTEK CYLINDER HEADSPART NUMBER: 516-375-500

375-500 CNC-Ported Cylinder Head for Big Block Chevy Engines, 375 cc Intake Ports, 127 cc Combustion Chambers [Bare]

$1,15900
ShippingShips on Sep 15, 2026
Lowest PriceLowest Price Guarantee

Big Block Chevy
Bare
Bare CNC-Ported Aluminum Cylinder Head
  • Big Block Chevy
  • Intake Ports: 375 cc Rectangle
  • Combustion Chamber: 133 cc
  • For Intake Valve: 2.350 in.
  • For Exhaust Valve: 1.880 in.
  • Sold Individually

    FLOTEK 375-500 Features:

    FLOTEK 375cc big block Chevy cylinder heads are designed with the racer in mind. They're fully CNC ported and feature 127cc combustion chambers. The heads are cast from a permanent steel mold and finished with a beautiful polycrystalline diamond-cut finish. Their thick deck design and high-capacity water jackets make them a reliable choice for racing applications. These models accept stock pistons and feature raised valve cover rails (exhaust port location raised 0.360 in.). FLOTEK 375cc BBC cylinder heads are just wicked for the marine or strip enthusiast! Order assembled or bare. Note: Cylinder heads are sold individually.

    Specifications:

    • Combustion Chamber Volume (cc): 127
    • Intake Runner Volume (cc): 375cc
    • Exhaust Runner Volume (cc): 133cc
    • Cylinder Head Style: Bare
    • Cylinder Head Material: Cast Aluminum
    • Intake Port Shape: Rectangular
    • Intake Valve Diameter (in.): 2.350 in.
    • CNC-Machined Combustion Chamber: Yes
    • CNC-Machined Intake Runner: Yes
    • CNC-Machined Exhaust Runner: Yes
    • Intake Port Location: Standard
    • Exhaust Port Shape: Round
    • Exhaust Port Location: Raised
    • Spark Plug Style: Angle
    • Intake Valves Included: No
    • Exhaust Valves Included: No
    • Exhaust Valve Diameter (in.): 1.880 in.
    • Valve Springs Included: No
    • Damper Spring Included: No
    • Retainers Included: No
    • Locks Included: No
    • Valve Stem Seals Included: No
    • Rocker Arm Studs Included: No
    • Rocker Arms Included: No
    • Rocker Arm Nuts Included: No
    • Guideplates Included: No
    • Valve Cover Mounting Style: Perimeter Bolt
    • Accessory Bolt Holes Drilled: Yes
    • Intake Valve Angle: 26/4
    • Exhaust Valve Angle: 16/4
    • Valve Guides Included: Yes
    • Valve Guide Material: Manganese Bronze
    • Valve Seats Machined: Yes
    • Valve Seat Machine Style: 4-Angle
    • Valve Seat Material: Powdered Metal
    • Cylinder Head Finish: Natural
    • Steam Holes Drilled: No
    • Oiling Style: Through Pushrod
    • Machined for O-Ring: No
    • Heat Crossover: No
    • Remanufactured: No
    • Quantity: Sold Individually

    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

  • Part TypeCylinder Head
    BrandFLOTEK CYLINDER HEADS
    Package Height9.0
    Package Width11.0
    Package Length25.0
    Weight39.0 PG
    Part CategoryPerformance Parts
    Valve Springs IncludedNo
    Spark Plug StyleAngle
    Cylinder Head MaterialCast Aluminum
    Cnc-Machined Intake RunnerYes
    Intake Valves IncludedNo
    QuantitySold Individually
    Exhaust Valves IncludedNo
    Exhaust Valve Diameter (In.)1.880 in.
    Exhaust Runner Volume (Cc)133cc
    Engine Make/SizeChevy Big Block
    Valve Guide MaterialManganese Bronze
    Rocker Arms IncludedNo
    Combustion Chamber Volume (Cc)127
    Cylinder Head StyleBare
    Part FitmentSemi Universal
    Valve Cover Mounting StylePerimeter Bolt
    Valve Seat MaterialPowdered Metal
    Intake Valve Diameter (In.)2.350 in.
    Intake Runner Volume (Cc)375cc
    Heat CrossoverNo
    Cnc-Machined Exhaust RunnerYes
    Cnc-Machined Combustion ChamberYes
    Vendor Part Number375-500
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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