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Project X Bare Aluminum Cylinder Heads for Small Block Chevy (215cc)
InfoVehicle Info Needed
PROMAXX PERFORMANCEPART NUMBER: 723-9215S

Project X Bare Aluminum Cylinder Heads for Small Block Chevy (215cc)

$1,14800
ShippingShips on 09/18/2026
Lowest PriceLowest Price Guarantee

215cc Intake Runner
Project X Bare Aluminum Cylinder Heads
  • Small Block Chevy
  • Intake Runner: 215cc
  • Spark Plug: Straight
  • Seats Installed for: 2.08 in. Int./1.60 in. Exh. Valves w/ 11/32 mm Stems
  • Valve Angle: 23°
  • Combustion Chamber: 64cc
  • Set of 2

    ProMaxx 9215S Project X Aluminum Cylinder Head Features:

    • Cast from 356-T6 ultra-smooth aluminum with larger valve spring pockets and runners designed to be both accurate and precise
    • Straight spark plug angle uses a 14 mm .750 in. reach spark plug such as Autolite AR3934 (sold separately) or equivalent 
    • Diamond Honed Manganese Bronze 11/32 in. Guides
    • Combustion chambers with unshrouded, hardened steel valve seats.
    • Bare set of 2

    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

      • Cylinder Heads that Outperform the Competition with Superior Flow

      Upgrade your Small Block Chevy to aluminum heads with ProMaxx Project X Series Cylinder Heads. Sold as a pair, all ProMaxx performance cast aluminum cylinder heads will outflow the competition, period!

    Part TypeCylinder Head
    Product LineProMaxx Project X Series Small Block Chevy Aluminum Cylinder Heads
    BrandPROMAXX PERFORMANCE
    Package Height8.0
    Package Width12.0
    Package Length21.0
    Weight54.0 PG
    Part CategoryPerformance Parts
    Cylinder Head MaterialAluminum
    Intake Port LocationStandard
    Engine Make/SizeChevy Small Block
    Rocker Arms IncludedNo
    Oiling StyleThrough pushrod
    Cylinder Head FinishNatural
    Intake Valve Angle23
    Valve Seat MaterialSteel
    Heat CrossoverNo
    FinishNatural
    Spark Plug StyleStraight
    UsageStreet/Strip
    Valve Guides IncludedYes
    Cnc-Machined Intake RunnerNo
    Combustion Chamber StyleHeart
    QuantitySold as a set of 2
    Cylinder Head TypeChevy Small Block
    Valve Stem Seals IncludedNo
    MaterialAluminum
    Accessory Bolt Holes DrilledYes
    Exhaust Runner Volume (Cc)66
    Exhaust Port LocationStandard
    Valve Guide MaterialManganese bronze
    Combustion Chamber Volume (Cc)64
    Machined For O-RingNo
    Exhaust Valve Angle23
    Steam Holes DrilledNo
    Cylinder Head StyleBare
    Part FitmentSemi Universal
    Valve Cover Mounting StylePerimeter bolt
    Intake Runner Volume (Cc)215
    Cnc-Machined Exhaust RunnerNo
    Cnc-Machined Combustion ChamberNo
    Vendor Part Number9215S
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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