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Brodix 1128100

WP LM -12 Series Cylinder Heads 300cc Intake Ports

158-1128100

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Estimated ship date 12/04/17 if Ordered Today
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Brodix 1128100 WP LM -12 Series Cylinder Heads 300cc Intake Ports $5,485.24
WP LM -12 Series Cylinder Heads
  • 300cc Intake Ports
  • 49cc Combustion Chambers
  • 2.180'' Intake (Steel) / 1.625'' Exhaust (Steel) Valves
  • 1.550'' Dia. Springs - 240# Seat Pressure
  • Titanium Retainers
  • Angle Plug
  • Assembled, 2/pkg.

  • Brodix 1128100 Details

    WP LM -12 Series Cylinder Heads

  • 100% CNC Ported
  • Cylinder Head Specifications
  • Intake Port Volume: 300cc
  • Combustion Chamber Volume: 49cc
  • Valves: 2.180'' dia. x 5.740'' o.a.l. Intake (Stainless Steel) / 1.625'' dia. x 5.740'' o.a.l. Exhaust (Stainless Steel) ( 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: N/A - 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-MG1215
  • Head Gasket: Fel-Pro p/n 375-1003 (350ci) / 375-1004 (400ci) or Cometic p/n 245-C5399 (350ci) / 245-C5403 (400ci)
  • Exhaust Gasket: Fel-Pro p/n 375-1407
  • Head Studs: Brodix SK HSSB 13 (Aluminum Block)
  • Spark Plug Specs: 14mm Thread, .750'' (3/4'') Reach, Gasket Seat
  • Valve Angle: 12°
  • Angle Milling: .0065'' per cc
  • Flat Milling: .0055'' per cc
  • Pushrod Slots: 85/134
  • Stud Girdle: N/A
  • Rocker Arms: Shaft System with 85/134 Spacing (Check heads for intake offset) - T&D 22076
  • Lifters: .180'' Offset
  • Pistons: Special 12°
  • Pushrods: Special Length
  • Intake Face Angle: 5°
  • Exhaust Pattern: Standard and Stahl
  • Valve Centerline: 85/134
  • 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 Victor 18° 2.9 Intake Manifold p/n 350-2955
  • Valley Plate: GM 24502652

  • Specifications:

    Manufacturer's Part Number:
    1128100

    Ported Head Flows 387 CFM!
    12° Intake & Exhaust Valve Angles

    The 100% CNC ported WP LM -12 is the latest in dirt late model technology. It features a 12-degree valve angle, 85/134 valve spacing, and newly designed intake and exhaust ports. The intake port on this head flows 387 cfm with a 2.180'' intake valve. The exhaust port flows 270 cfm with a 1.625'' exhaust valve. The 100% CNC ported offering from Brodix is destined to become the industry standard. This head has special valve centerlines and dowel location requiring special components. The LM -12 series has two exhaust bolt patterns available and a 5° intake face requiring a special intake manifold and components (compatible with 18° intakes/headers). 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. 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. !

      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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