Race-Rite 180 Series Top End Kit
• 180cc Intake Ports
• 67cc Combustion Chambers
• 2.020'' Intake / 1.600'' Exhaust Valves
• 1.250'' Dia. Springs - 100# Seat Pressure
• Steel Retainers
• Straight Plug
• Assembled Heads
  
  
  Small Block Chevy Top End Kits Include:
• Complete Cylinder Heads
• HP1 Intake Manifold (4150 Series Carb)
• Tall Cast Aluminum Valve Covers with Studs and Nuts
• Valve Cover, Intake, Exhaust, Carburetor and Head Gaskets
• Head Bolts with Washers
• Intake Bolts with Washers
• Spark Plugs
• Brodix Hat
  Cylinder Head Specifications
• Intake Port Volume: 180cc
• Combustion Chamber Volume: 67cc
• Valves: 2.020' dia. x 4.920' o.a.l. Intake / 1.600' dia. x 4.940' o.a.l. Exhaust ( 11/32' Stem Diameter )
• Valve Springs: 1.250' Diameter - Open Pressure: 300 lbs.; Closed Pressure: 100 lbs.; Installed Height: 1.850'; Max Lift: .525'
• Spring Retainers: 1.250' 7° Steel
• Rocker Studs: 3/8'
• Guide Plates: 5/16'
• Valve Seals: 11/32'
• Spark Plug Configuration: Straight
  Facts and Related Components
• Torque Heads: 70 ft-lb.
• Torque Rocker Studs: 40-45 ft-lb.
• Intake Gasket: Fel-Pro p/n 375-1204, Cometic p/n 245-C5416
• 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 375-1404 or Cometic p/n 245-C5417
• Head Bolts: ARP p/n 070-134-3601 or Manley p/n 660-42313
• Head Bolt Washers: MANLEY p/n 660-42102
• Head Studs: ARP p/n 070-134-4001 (6-point)
• Spark Plug Specs: 14mm Thread, .750' (3/4') Reach, Gasket Seat
• Valve Angle: 23°
• Angle Milling: .0078' per cc
• Flat Milling: .0060' per cc
• Pushrod Slots: Standard
• Stud Girdle: Standard
• Rocker Arms: Standard
• Lifters: Standard
• Exhaust Pattern: Standard
• Valve Centerline: Standard
• Spring Pockets: May not be cut any larger or deeper than 1.550'
• 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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