STS B1 BS Series Cylinder Head
• CNC Ported
• 243cc Intake Ports
• 80cc Combustion Chambers
• 2.200'' Intake / 1.810'' Exhaust Valves
• 1.550'' Dia. Springs - 240# Seat Pressure
• Titanium Retainers
• Assembled, 1/pkg.
  
  
  Cylinder Head Specifications
• Intake Port Volume: 243cc
• Combustion Chamber Volume: 80cc
• Valves: 2.200' dia. x 5.290' o.a.l. Intake / 1.810' dia. x 5.300' o.a.l. Exhaust ( 11/32' Stem Diameter )
• Valve Springs: 1.550' Diameter - Open Pressure: 550 lbs.; Closed Pressure: 240 lbs.; Installed Height: 1.950'; Max Lift: .700'
• Spring Retainers: 1.550' 10° Titanium
• Valve Seals: 11/32'
  Facts and Related Components
• Torque Heads: 70 ft-lb. with 7/16' Studs; 100 ft-lb. with 1/2' Studs
• Torque Rocker Studs: 30 ft-lb.
• Intake Gasket: Fel-Pro 1214 (p/n 375-1214) B1 BS series; Fel-Pro 1276 (p/n 375-1276) B1 MO series
• Head Gasket: Fel-Pro p/n 375-1009
• Exhaust Gasket: Fel-Pro 1414 (p/n 375-1414)
• Head Studs: ARP p/n 070-145-4012 (B1 BS); ARP 070-145-4007 (B1 MO)
• Spark Plug Specs: 14mm Thread, .750' (3/4') Reach, Gasket Seat
• Valve Angle: 15° Intake and Exhaust
• Angle Milling: .0065' per cc (B1 BS); .0070' per cc (B1 MO)
• Flat Milling: .0055' per cc
• Pushrod Slots: Standard
• Pushrods: Special Length
• Rocker Arms: Shaft Mounted System - T&D 8220, Jesel KPS 12364 (B1 BS); T&D 8010, Jesel KPS SP1100 (B1 MO)
• Lifters: Standard
• Pistons: Standard Closed Chamber (B1 BS); Special 15° (B1 MO)
• Spring Pockets: May not be cut any larger or deeper than 1.625'
• Recommended Intake Manifold: Standard Big Block Chrysler on B1 BS & STS B1 BS Series; B1 Manifold on B1 MO Series
• Accessory Bolt Holes are Drilled (B1 BS)

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.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART