BR 7 Series Cylinder Heads
• 262 cc Intake Ports
• 72 cc Combustion Chambers
• 2.204 in. Intake / 1.614 in. Exhaust Valve Sizes
• Bare, Pair
  
  

  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: 262cc
• Combustion Chamber Volume: 72cc
• Valve Sizes: 2.204' Intake / 1.614' Exhaust ( 8mm Stem Diameter )
  Facts and Related Components
• Torque Heads: 11mm STUDS - 85 ft-lb. WITH OIL / 8mm STUDS - 26 ft-lb. WITH OIL
• Torque Rocker Studs: 22 ft-lb.
• Intake Gasket: Fel-Pro p/n 375-1208-3 (.060), GM p/n 809-19172113
• Head Gasket: Fel-Pro p/n 375-1185-041 (4.175 bore) or GM p/n 809-12582179
• Exhaust Gasket: Fel-Pro p/n 375-1440
• Head Studs: ARP p/n 070-234-4319 (under cut studs)
• Spark Plug Specs: 14mm Thread, .750' (3/4') Reach, Gasket Seat (NGK R5671A)
• Valve Angle: 12°
• Flat Milling: .0060' per cc
• Dowell Shift: Standard
• Pushrod Slots: Standard
• Rocker Arms: LS7 style
• Lifters: Standard
• Intake Manifold: LS7 or Equivalent
• Valve Centerline: Standard
• Spring Pockets: 1.350' out of the box, May not be cut any larger or deeper
• Accessory Bolt Holes are Drilled

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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