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9170 MAXX Series Aluminum Cylinder Heads for Big Block Ford
InfoVehicle Info Needed
PROMAXX PERFORMANCEPART NUMBER: 723-9170

9170 MAXX Series Aluminum Cylinder Heads for Big Block Ford

$1,85099
2 left in stock
ShippingShips on Nov 02, 2026
Lowest PriceLowest Price Guarantee

Ford FE 390-428 ci
  • 170cc Intake Port Volume - As-Cast Ports
  • 72cc Combustion Chambers
  • 2.09'' Intake / 1.66'' Exhaust Valve Sizes
      • MAXX Series Aluminum Cylinder Heads
    • As-Cast
    • 170cc Intake Ports
    • 72cc Combustion Chambers
    • 2.09'' Intake / 1.66'' Exhaust Valves
    • .600'' Max Lift Hydraulic Flat Tappet Springs
    • Stainless Steel Valves
    • Assembled, 2/pkg

      PROMAXX Performance Maxx Series big block Ford cylinder heads make upgrading or reviving your FE motor affordable. These heads feature ultra-smooth 356 T-6 aluminum casting, 5-angle valve jobs, precision CNC-machining, and diamond-honed bronze guides. Don't get stuck doing the typical upgrade/repair--kick it up a notch with a pair of professionally assembled PROMAXX Performance Maxx Series big block Ford cylinder heads. They also offer bare options.

    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

    Maxx Quality, Performance and Affordibility!

    The ProMaxx MAXX Series Ford FE 390-428ci Aluminum Cylinder Heads are taking affordable performance street and strip cylinder heads to the next level. Even the ''as cast'' runner heads utilize ultra-smooth new runner and chamber designs that produce exceptional flow numbers. The fully CNC'd version is designed by Keith Craft Racing Engines and flow numbers that will make the Ford FE performance crowd, very happy! This combined with a multi-angle competition valve job, diamond-honed bronze guides, hand bowl blending, and professional assembly to outperform the best brands in the business.

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    Features:

    • A356-T6 Aluminum Castings
    • Hand bowl blending
    • Efficient chamber design
    • Available bare or assembled
    • Multi-angle competition valve job
    • 3/8'' bronze valve guides
    • "MAXX" power for street or strip
    • Sold in pairs
    Part TypeCylinder Head
    Product LineProMaxx MAXX Series Ford FE Aluminum Cylinder Heads
    BrandPROMAXX PERFORMANCE
    Package Height8.6
    Package Width12.75
    Package Length21.5
    Weight58.3 PG
    Part CategoryPerformance Parts
    Maximum Valve Lift0.6 in (15.24 mm)
    Part FitmentSemi Universal
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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    Some parts are not legal for use in California or other states with similar laws / regulations
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