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ProMaxx Performance 9170

MAXX Series Aluminum Cylinder Heads As-Cast

ProMaxx Performance 9170


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Estimated ship date 03/27/18 if Ordered Today
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ProMaxx Performance 9170 MAXX Series Aluminum Cylinder Heads As-Cast $1,395.99
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

  • 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 5-angle competition valve job, diamond-honed bronze guides, hand bowl blending, and professional assembly to outperform the best brands in the business.

  • A356-T6 Aluminum Castings
  • Hand bowl blending
  • Efficient chamber design
  • Available bare or assembled
  • 5-angle competition valve job
  • 3/8'' bronze valve guides
  • "MAXX" power for street or strip
  • Sold in pairs

  • Will these springs work with solid lift cam and solid lifters

    Asked by: 1966427
    No, these springs are designed for a hydraulic camshaft.
    Answered by: Rusty B
    Date published: 2018-02-01

    I don't see accessory bolt holes in the end of the head or am i wrong? Did they put time certs or hili coils in the rocker bosses, exhaust flanges, intake ports? Thanks Mark C.

    Asked by: Dollys31
    You will need to add accessory holes if you require them in your application. These heads do not have heli coils in them.
    Answered by: Rusty B
    Date published: 2018-01-03

    How do these heads stack up to the Edelbrock version in terms of horsepower & volumetric efficiency?

    Asked by: Dominique
    These are very similar to the Edelbrock head, you will find the efficiency and power is equal.
    Answered by: Jegs Tech
    Date published: 2017-09-05
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