PB 5002 Series Cylinder Head
• 4.675-4.750'' Bore
• 509cc Oval Intake Ports
• 80cc Combustion Chambers
• 2.520'' Intake / 1.860'' Exhaust Valves
• 1.670'' Dia. Springs - 350# Seat Pressure
• Titanium Retainers
• Assembled, 1/pkg.
  
  
  Cylinder Head Specifications
• Intake Port Volume: 509cc - Oval Port
• Combustion Chamber Volume: 80cc
• Valves: 2.520' dia. x 6.900' o.a.l. Titanium Intake (55° Valve Seat Angle) / 1.860' dia. x 6.820' o.a.l. Titanium Exhaust (55° Valve Seat Angle) ( 11/32' Stem Diameter )
• Valve Springs: 1.670' Diameter - Open Pressure: 890 lbs.; Closed Pressure: 350 lbs.; Installed Height: 2.150'; Max Lift: .900'
• 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 5010 (p/n 158-MG5010), Fel-Pro 1223 (.030'-.120' Thick)
• Head Gasket: Fel-Pro 26465 (p/n 375-26465), 26466 (p/n 375-26466) or 26467 (p/n 375-26467) (.041'-.053' Thick)
• Exhaust Gasket: Brodix MG 5020 (p/n 158-MG5020), Fel-Pro 1696 (p/n 375-1696)
• Head Studs: Available Exclusively from Brodix - Brodix SK HS PB 5000
• Spark Plug Specs: 14mm Thread, .750' (3/4') Reach, Gasket Seat
• Valve Angle: 15° 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 3075, Jesel KPS 319132
• Lifters: Standard
• Pistons: 15° x 6° Valve Angle Piston
• Spring Pockets: May not be cut any larger or deeper than 1.750'
• Accessory Bolt Holes are Not Drilled
• Recommended Intake Manifold: Brodix PM 1950* (p/n 158-PM1950) / Custom Sheet Metal Fab'd Intake manifold (*Must be used with intake manifold adapter kit)

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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