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Brodix 1138001

WP GB 2000 Series Cylinder Heads 286cc Intake Ports

Brodix 1138001
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158-1138001

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Ships 12/20/16 if Ordered Today
Brodix 1138001 WP GB 2000 Series Cylinder Heads 286cc Intake Ports $4,373.58
WP GB 2000 Series Cylinder Heads
  • 286cc Intake Ports
  • 76cc Combustion Chambers
  • 2.200'' Intake / 1.580'' Exhaust Valve Sizes
  • Angle Plug
  • Bare, 2/pkg.

  • Brodix 1138001 Details

    WP GB 2000 Series Cylinder Heads

  • 286cc Intake Ports
  • 76cc Combustion Chambers
  • 100% CNC Ported
  • 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: 286cc
  • Combustion Chamber Volume: 76cc
  • Valve Sizes: 2.200'' Intake / 1.580'' 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: Brodix p/n 158-MG2200, Cometic p/n 245-C5423
  • 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 (Trim to fit), Cometic p/n 245-C5422 (Spread Port)
  • Head Studs: Brodix BR HSRP/GB CI Block
  • Spark Plug Specs: 14mm Thread, .750'' (3/4'') Reach, Gasket Seat
  • Valve Angle: 13.5°
  • Angle Milling: N/A
  • Flat Milling: .0060'' per cc
  • Pushrod Slots: Left Bare and Uncut
  • Stud Girdle: N/A
  • Rocker Arms: Shaft System with 85/125 Spacing - T&D 2221, Jesel KPS 20592 (Check heads for intake offset)
  • Lifters: .180'' Offset
  • Pistons: Special 13.5° with -12 spark plug angle
  • Pushrods: Special Length
  • Intake Face Angle: 5°
  • Exhaust Pattern: Spread Port with Stahl Bolt Pattern Header Flange
  • Valve Centerline: 85/125
  • 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: Edelbrock 2955 with Brodix Spacers and Valley Plate

  • Specifications:

    Accessory Bolt Holes Drilled
    Yes
    CNC-Machined Combustion Chamber
    Yes
    CNC-Machined Exhaust Runner
    Yes
    CNC-Machined Intake Runner
    Yes
    Combustion Chamber Volume (cc)
    76
    Cylinder Head Finish
    Natural
    Cylinder Head Material
    Aluminum
    Cylinder Head Style
    Bare
    Damper Spring Included
    No
    Exhaust Port Location
    Spread
    Exhaust Port Shape
    Round
    Exhaust Valve Angle
    13.5
    Exhaust Valve Diameter (in.)
    1.58
    Exhaust Valves Included
    No
    Guideplates Included
    No
    Heat Crossover
    No
    Intake Port Location
    Standard
    Intake Runner Volume (cc)
    286
    Intake Valve Angle
    13.5
    Intake Valve Diameter (in.)
    2.2
    Intake Valves Included
    No
    Locks Included
    No
    Machined for O-Ring
    No
    Oiling Style
    Through pushrod
    Quantity
    Sold as a pair
    Retainers Included
    No
    Rocker Arm Nut Thread Size (in.)
    7/16"-20
    Rocker Arm Nuts Included
    No
    Rocker Arm Studs Included
    No
    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
    3-angle
    Valve Seat Material
    Ductile iron
    Valve Seats Machined
    Yes
    Valve Springs Included
    No
    Valve Stem Seals Included
    No
    Manufacturer's Part Number:
    1138001

    Highest Intake Port Location in the Industry
    DR 1213 - 12.5° Intake & 13.5° Exhaust Valve Angles
    GB 2000 - 13.5° Intake & Exhaust Valve Angles

    The Brodix GB Series is in a class by itself. These 13.5° valve angle heads were designed with sprint cars, late models, and drag racing in mind. The GB 2000 series features improved spark plug angles, highly efficient combustion chambers, raised intake ports, moved valve centerlines, and a raised valve cover rail. The latest evolution of the GB head is the DR 1213 which features a 13.5° exhaust valve angle and a 12.5° intake valve angle for even greater air flow. Special components required for the GB 2000 series and DR heads are injectors or modified intake manifold, sheet metal valve covers, and a shaft rocker system. 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 installed. Bare heads sold in pairs, Assembled heads sold individually. 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''
  •   1.550'' Diameter Valve Spring for Mechanical Roller Lifter Cam
  • Spring Pressure Open: 600 lbs.
  • Spring Pressure Closed: 260 lbs.
  • Installed Height: 1.950''
  • Max Lift: .800''
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