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Brodix 1138107

WP GB 2300 Series Cylinder Head Lightened

158-1138107

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Ships 12/13/16 if Ordered Today
Brodix 1138107 WP GB 2300 Series Cylinder Head Lightened $4,018.15
WP GB 2300 Series Cylinder Head
  • Lightened
  • 309cc Intake Ports
  • 49cc Combustion Chambers
  • 2.200'' Intake / 1.580'' Exhaust Valves
  • 1.550'' Dia. Springs - 240# Seat Pressure
  • Titanium Retainers
  • Angle Plug
  • Assembled, Sold Individually

  • Brodix 1138107 Details

    WP GB 2300 Series Cylinder Heads

  • 309cc Intake Ports
  • 49cc Combustion Chambers
  • 100% CNC Ported
  • Lightened = Machined to reduce overall weight of this cylinder head.

    Cylinder Head Specifications
  • Intake Port Volume: 309cc
  • Combustion Chamber Volume: 49cc
  • Valves: 2.200'' dia. x 6.250'' o.a.l. Titanium Intake / 1.580'' dia. x 6.250'' o.a.l. Steel 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: Shaft System Required
  • Guide Plates: N/A
  • 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: 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: Available from Brodix
  • 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: 75/125
  • 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: Fuel Injection

  • Specifications:

    Manufacturer's Part Number:
    1138107

    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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