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Brodix 1118100

BP -11X Series Cylinder Heads Spread Exhaust Port

Brodix 1118100

158-1118100

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Ships 01/06/17 if Ordered Today
Brodix 1118100 BP -11X Series Cylinder Heads Spread Exhaust Port $3,027.26
BP -11X Series Cylinder Heads
  • Spread Exhaust Port
  • 231cc Intake Ports
  • 67cc Combustion Chambers
  • 2.100'' Intake / 1.600'' Exhaust Valves
  • 1.550'' Dia. Springs - 240# Seat Pressure
  • Titanium Retainers
  • Angle Plug
  • Assembled, 2/pkg.

  • Brodix 1118100 Details

    BP -11X Series Cylinder Heads

  • 67cc Combustion Chambers
  • Spread Exhaust Ports
  • CNC Ported Combustion Chambers
  • Cylinder Head Specifications
  • Intake Port Volume: 231cc
  • Combustion Chamber Volume: 67cc
  • Valves: 2.100'' dia. x 5.065'' o.a.l. Intake / 1.600'' dia. x 5.065'' o.a.l. Exhaust ( 11/32'' Stem Diameter )
  • Valve Springs: 1.550'' Diameter - Open Pressure: 550 lbs.; Closed Pressure: 240 lbs.; Installed Height: 1.950''; Max Lift: .700''
  • Spring Retainers: 1.550'' 10° Titanium
  • Rocker Studs: 7/16''
  • Guide Plates: 5/16''
  • Valve Seals: 11/32''
  • Spark Plug Configuration: Angled

    Facts and Related Components
  • Torque Heads: 70 ft-lb.
  • Torque Rocker Studs: 40-45 ft-lb.
  • Intake Gasket: Fel-Pro p/n 375-1206, Cometic p/n 245-C5414
  • 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-MG1500 (Spread Port)
  • Head Bolts: ARP p/n 070-134-3601 or Manley p/n 660-42313
  • Head Bolt Washers: MANLEY p/n 660-42102
  • Head Studs: ARP p/n 070-234-4301 (12-point)
  • Spark Plug Specs: 14mm Thread, .750'' (3/4'') Reach, Gasket Seat
  • Valve Angle: 23°
  • Angle Milling: .0078'' per cc
  • Flat Milling: .0060'' per cc
  • Pushrod Slots: 40/60
  • Stud Girdle: 40/60 Brodix p/n 158-BR6440
  • Rocker Arms: Standard, T&D Economy 40/60 2256, Jesel 40/60 Shaft System KPS 01302
  • Lifters: Standard
  • Exhaust Pattern: Standard or Spread Port
  • Valve Centerline: 40/60
  • Spring Pockets: May not be cut any larger or deeper than 1.550''
  • Accessory Bolt Holes are Drilled
  • Recommended Intake Manifold: Brodix BM 1000(p/n 158-BM1000) / HV 1000 (p/n 158-HV1000) / HV 1002 (p/n 158-HV1002) / SE 100 (p/n 158-SE100) / SE 102 (p/n 158-SE102)

  • Specifications:

    Accessory Bolt Holes Drilled
    Yes
    CNC-Machined Combustion Chamber
    Yes
    CNC-Machined Exhaust Runner
    Yes
    CNC-Machined Intake Runner
    Yes
    Combustion Chamber Style
    Heart
    Combustion Chamber Volume (cc)
    67
    Cylinder Head Finish
    Natural
    Cylinder Head Material
    Aluminum
    Cylinder Head Style
    Assembled
    Damper Spring Included
    Yes
    Exhaust Port Location
    Spread
    Exhaust Port Shape
    D-Port
    Exhaust Valve Angle
    23
    Exhaust Valve Diameter (in.)
    1.6
    Exhaust Valves Included
    Yes
    Guideplates Included
    Yes
    Heat Crossover
    No
    Intake Port Location
    Standard
    Intake Port Shape
    Rectangular
    Intake Runner Volume (cc)
    231
    Intake Valve Angle
    23
    Intake Valve Diameter (in.)
    2.1
    Intake Valves Included
    Yes
    Lock Style
    10 degree
    Locks Included
    Yes
    Machined for O-Ring
    No
    Maximum Valve Lift (in.)
    0.7
    Number of Springs Per Valve
    Dual
    Oiling Style
    Through pushrod
    Outside Diameter of Outer Spring (in.)
    1.55
    Quantity
    Sold as a pair
    Retainer Material
    Titanium
    Retainers Included
    Yes
    Rocker Arm Nut Thread Size (in.)
    7/16"-20
    Rocker Arm Nuts Included
    No
    Rocker Arm Studs Included
    Yes
    Rocker Arms Included
    No
    Spark Plug Style
    Angled
    Steam Holes Drilled
    No
    Valve Cover Mounting Style
    Perimeter bolt
    Valve Guide Material
    Phosphorous bronze
    Valve Guides Included
    Yes
    Valve Seat Machine Style
    5-angle
    Valve Seat Material
    Ductile iron
    Valve Seats Machined
    Yes
    Valve Springs Included
    Yes
    Valve Stem Seal Style
    Positive stop
    Valve Stem Seals Included
    Yes
    Manufacturer's Part Number:
    1118100

    Available Standard or Spread Exhaust Ports
    23° Intake & Exhaust Valve Angles

    The Brodix Small Block Chevy -11X Series Aluminum Cylinder Heads are available with a standard or spread exhaust port pattern. This 23° head flows 285 cfm @ .700'' lift straight out-of-the-box with as-cast runners and chambers. The BP -11X Series heads feature CNC ported combustion chambers that flow up to 316 cfm @ .700'' lift. Brodix recommends this head be installed on a 400ci+ engine. The -11X requires a special stud girdle and longer pushrods. Piston valve notches must be checked for clearance. A valve length of .150'' longer than stock is required. 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 hardened valve seats installed for unleaded fuel. 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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