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Brodix 1180003

-18C Series Cylinder Heads Spread Exhaust Port

Brodix 1180003

Part Number: 158-1180003

-18C Series Cylinder Heads
  • Spread Exhaust Port
  • 185cc Intake Ports
  • 40cc Combustion Chambers
  • 2.180'' Intake / 1.625'' Exhaust Valve Sizes
  • Angle Plug
  • Bare, 2/pkg.
  • $1,769.77
    Ships 10/31/16
    if Ordered Today
    FREE Shipping
    Brodix 1180003 -18C Series Cylinder Heads Spread Exhaust Port $1,769.77

    Brodix 1180003 Details

    -18C Series Cylinder Heads

  • 40cc Combustion Chambers
  • Spread Exhaust Ports
  • This head is sold as an unassembled bare casting. It is finished machined and includes valve guides and valve seats installed. This head does NOT include studs, valves, springs retainers or locks.

    Cylinder Head Specifications
  • Intake Port Volume: 185cc (No Porting)
  • Combustion Chamber Volume: 40cc
  • Valve Sizes: 2.180'' Intake / 1.625'' Exhaust ( 11/32'' Stem Diameter )
  • Spark Plug Configuration: Angled

    Facts and Related Components
  • Torque Heads: 70 ft-lb.
  • Torque Rocker Studs: 40-45 ft-lb.
  • Intake Gasket: Modified Fel-Pro p/n 375-1282
  • Head Gasket: Fel-Pro p/n 375-1003 (350ci) / 375-1004 (400ci) or Cometic p/n 245-C5399 (350ci) / 245-C5403 (400ci)
  • Exhaust Gasket: Brodix p/n 158-MG52464, Cometic p/n 245-C5424 (Spread Port)
  • Head Studs: ARP p/n 070-234-4727 (12-point with 3/8'' center studs)
  • Spark Plug Specs: 14mm Thread, .750'' (3/4'') Reach, Gasket Seat
  • Valve Angle: 18°
  • Angle Milling: .0065'' per cc
  • Flat Milling: .0055'' per cc
  • Pushrod Slots: 58/107
  • Stud Girdle: N/A
  • Rocker Arms: Shaft System with 58/107 Spacing (Check heads for intake offset) - T&D 2229, Jesel KPS 15409
  • Lifters: .180'' Offset
  • Pistons: Special 18°
  • Pushrods: Special Length
  • Intake Face Angle: 5°
  • Exhaust Pattern: Stahl Only
  • Valve Centerline: 58/107
  • Spring Pockets: 1.550'' Out of the Box, May be cut to 1.625'' - No larger or deeper
  • Accessory Bolt Holes are Drilled
  • Recommended Intake Manifold: Brodix HV 1813 (p/n 158-HV1813) / HV 1814 (p/n 158-HV1814)

  • Specifications:

    Manufacturer's Part Number:

    Cylinder Heads for Serious Race Applications!
    18° Intake & Exhaust Valve Angles

    This -18C series cylinder head has an 18-degree valve angle that works well on dirt late model or serious drag racing applications. This head has special valve centerlines and dowel location requiring special components. Interlocking valve seats are installed along with replaceable phosphorous bronze guides. The combustion chambers may be angle machined down to the mid 40cc range without weakening the deck surface. The -18C has two exhaust bolt patterns available and a 5° intake face requiring a special intake manifold and components. Every casting is poured from A-356 virgin aluminum and tested before Brodix utilizes their in-house processes such as finish machining and heat treating to assure that you receive the best products for your hard-earned money. The industry standard has been taken to the next level with modernized CNC porting. Other features include a thick deck surface that is compatible with nitrous, drilled and tapped holes on the ends for standard drive accessories, phosphorous bronze valve guides and interlocking valve seats. Sold in Pairs. Made in the USA!

      VALVE SPRING   Specs
      1.550'' Diameter Valve Spring for Mechanical Roller Lifter Cam
  • Spring Pressure Open: 550 lbs.
  • Spring Pressure Closed: 240 lbs.
  • Installed Height: 1.950''
  • Max Lift: .700''
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