BP -13 Series Cylinder Heads
• 283cc Intake Ports
• 47cc Combustion Chambers
• 2.180'' Intake / 1.625'' Exhaust Valve Sizes
• Angle Plug
• Bare, 2/pkg.
  
  

  This head is sold as an unassembled bare casting. It is finished machined and CNC ported. Also includes valve guides and valve seats installed. This head does NOT include studs, valves, springs retainers or locks.

  Cylinder Head Specifications
• Intake Port Volume: 283 (CNC Ported)
• Combustion Chamber Volume: 47cc
• Valve Sizes: 2.180' Intake / 1.625' Exhaust ( 11/32' Stem Diameter )
• 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-MG1600 (Trim to fit), Mr.Gasket p/n 720-143
• 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: 13°
• 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 2126, Jesel KPS 41942
• Lifters: .180' Offset
• Pistons: Special 13°
• 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: Brodix HV 1300 (p/n 158-HV1300) / HV 1301 (p/n 158-HV1301); Edelbrock Victor 18° 2.9 Intake Manifold (p/n 350-2955) / Victor 18° 3.2 Intake Manifold (p/n 350-2958)

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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