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Brodix 1001000 - Brodix Small Block Chevy -18X Series Aluminum Heads

Brodix 1001000 - Brodix Small Block Chevy -18X Series Aluminum Heads

Brodix#158-1001000

Track 1 Series Cylinder Heads
  • 221cc Intake Ports
  • 67cc Combustion Chambers
  • 2.055'' Intake / 1.600'' Exhaust Valves
  • 1.550'' Dia. Springs - 140# Seat Pressure
  • Steel Retainers
  • Angle Plug
  • Assembled, 2/pkg.

    Brodix 1001000 - Brodix Small Block Chevy -18X Series Aluminum Heads Details

    Track 1 Series Cylinder Heads

  • 67cc Combustion Chambers
  • Cylinder Head Specifications
  • Intake Port Volume: 221cc
  • Combustion Chamber Volume: 67cc
  • Valves: 2.055'' dia. x 4.920'' o.a.l. Intake / 1.600'' dia. x 4.940'' o.a.l. Exhaust ( 11/32'' Stem Diameter )
  • Valve Springs: 1.550'' Diameter - Open Pressure: 355 lbs. @ 1.350''; Closed Pressure: 140 lbs. @ 1.950; Installed Height: 1.950''; Max Lift: .600''; Coil Bind @ 1.170''
  • Spring Retainers: 1.430'' 10° Steel
  • 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: Fel-Pro p/n 375-1406 or Cometic p/n 245-C5415
  • 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: Standard
  • Stud Girdle: Brodix BR 6435 (p/n 158-BR6435)
  • Rocker Arms: Standard, T&D Economy 2256, Jesel Shaft System KPS 01001
  • Lifters: Standard
  • Exhaust Pattern: Standard
  • Valve Centerline: Standard
  • 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)

  • Brodix 1001000 - Brodix Small Block Chevy -18X Series Aluminum Heads

    Big Horsepower Maker for Budget Racers!
    18° Intake & Exhaust Valve Angles

    The Brodix Small Block Chevy -18X Series Aluminum Cylinder Heads offer the best of both worlds, 18-degree horsepower without using expensive shaft rockers or offset lifters. This head offers a dramatic horsepower increase over the previous 23° cylinder head. Several advantages of the -18X are intake ports that flow over 320 cfm out-of-the-box, an intake valve size of 2.140, raised intake ports, and shallow combustion chambers. The -18X is an excellent choice for the budget-minded racer who wants to go fast. 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. 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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