PB 2005 Series Cylinder Head
• 490cc Oval Intake Ports
• 80cc Combustion Chambers
• 2.520'' Intake / 1.860'' Exhaust Stainless Valves
• 1.645'' Dia. Springs - 330# Seat Pressure
• Titanium Retainers
• Assembled, 1/pkg.
  
  
  Cylinder Head Specifications
• Intake Port Volume: 490cc - Oval Port
• Combustion Chamber Volume: 80cc
• Valves: 2.520' dia. x 6.920' o.a.l. Stainless Steel Intake (55° Valve Job) / 1.860' dia. x 6.600' o.a.l. Stainless Steel Exhaust (55° Valve Job) ( 11/32' Stem Diameter )
• Valve Springs: 1.645' Diameter - Open Pressure: 945 lbs.; Closed Pressure: 330 lbs.; Installed Height: 2.100'; Max Lift: .875'
• Spring Retainers: 1.645' 10° Titanium
• 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 MG 2015 (p/n 158-MG2015)
• Head Gasket: 4.540' Bore - Fel-Pro p/n 375-1017, Cometic p/n 245-C5433; 4.600' Bore - Fel-Pro p/n 375-1057, Cometic p/n 245-C5434
• Exhaust Gasket: Brodix MG 2005 (p/n 158-MG2005)
• Head Studs: Available Exclusively from Brodix - Brodix BR HS/PB 2005 CI BLK (12pt) for Cast Iron Block; Brodix SK HS PB 2005 (12pt) for Aluminum Block
• Spark Plug Specs: 14mm Thread, .750' (3/4') Reach, Gasket Seat
• Valve Angle: 14.5° and 4° Intake, 6° and 4° Exhaust
• Angle Milling: N/A
• Flat Milling: .0055' per cc
• Pushrod Slots: Standard
• Pushrods: Check pushrod clearance with head installed on the engine block before final assembly
• Rocker Arms: Shaft Mounted System - T&D 3051, Jesel KPS 23799
• Lifters: Standard
• Pistons: 14.5° x 6° Valve Piston
• Spring Pockets: May not be cut any larger or deeper than 1.750'
• Accessory Bolt Holes are Drilled
• Recommended Intake Manifold: Brodix PM 1807 (p/n 158-PM1807) / PM 1817 (p/n 158-PM1817) / PM 1907 (p/n 158-PM1907) / PM 1917 (p/n 158-PM1917)

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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