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Brodix 1458000

12° 4.500 Bore Spacing Series Cylinder Heads Symmetrical Ports

Brodix 1458000

158-1458000

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Estimated ship date 08/25/17 if Ordered Today
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Brodix 1458000 12° 4.500 Bore Spacing Series Cylinder Heads Symmetrical Ports $2,906.80
12° 4.500 Bore Spacing Series Cylinder Heads
  • Symmetrical Ports
  • Finished & CNC Ported
  • 292cc Intake Ports
  • 50cc Combustion Chambers
  • 2.200'' Intake / 1.600'' Exhaust Valve Sizes
  • Straight Plug
  • Bare, 2/pkg.

  • Brodix 1458000 Details

    12° 4.500 Bore Spacing Series Cylinder Heads

  • Symmetrical 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: 292cc
  • Combustion Chamber Volume: 50cc
  • Valve Sizes: 2.200'' Intake Size / 1.600'' Exhaust Size
  • Spark Plug Configuration: Straight

    Facts and Related Components
  • Torque Heads: 70 ft-lb.
  • Torque Rocker Studs: 40-45 ft-lb.
  • Intake Gasket: Custom Hand Fabricated
  • Head Gasket: Fel-Pro p/n 375-26476
  • Exhaust Gasket: Custom Hand Fabricated
  • Valve Cover Gasket: Custom Hand Fabricated
  • Head Studs: Brodix SK HS BD 45
  • 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: Cut
  • Stud Girdle: N/A
  • Rocker Arms: Jesel or T&D Shaft System
  • Lifters: .180'' Left Offset (All)
  • Pushrods: Special Length
  • Pistons: Special 12°
  • Exhaust Pattern: Symmetrical Port
  • Valve Centerline: 88/184
  • Spring Pockets: 1.550'' out of the box, May be cut to 1.625'' - No larger or deeper
  • Accessory Bolt Holes are Drilled
  • Intake Face Angle: Brodix 5°
  • Recommended Intake Manifold: Custom Fabricated Sheet Metal

  • Specifications:

    Manufacturer's Part Number:
    1458000

    Spread or Symmetrical Port Locations!
    10°, 12° or 13° Intake & Exhaust Valve Angles

    The Brodix 4.500'' bore spacing series opens a whole new world of development for the small block Chevrolet compatible engine. This 4.500'' bore spacing feature allows for a cylinder bore of 4.250'' to be utilized which greatly enhances durability and airflow. This new series offers a variety of different valve angles, port locations, and port sizes. Special components needed for proper installation include: headers, shaft rocker system, sheet metal valve covers, head stud kit, and cam core. 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. Sold in Pairs. !

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