Small Block Chevy S/R Torquer Cast Iron Cylinder Head
• 170cc Intake Ports
• 67cc Combustion Chambers
• 2.020'' Int/1.600'' Exh Valves
• 1.250'' Valve Springs, .500'' Max Lift for Hydraulic Cam
• Assembled, Sold Individually
  
  
  1.250' single spring, 100# @ seat, .500' max. lift, 2.02 x 1.600 valves, 170cc intake runner.

  Material: High density cast iron
  Valve Seats: Integral intake,hardened steel exhaust
  Valve Size: 2.020' x 1.600' (1.940' x 1.500' for S/R Torquer 305
  Accessory Flange: Stock locations, 7-bolt universal pattern

  Included In Assembly: Erson stainless steel, ring and band valve seals, valve springs, Erson 7° retainers and keepers.

  Recommended Installation Items:
  Head Gaskets: Fel-Pro #1003 (265-350) or equivalent.
  Puhshrods: OEM can be used. Hardened not required
  Screw-in Studs: 3/8" with 7/16"-14 base thread
  Pushrod Guidplates: These heads are not machined for guide plates. If desired Flat 5/16" Erson 601 or equivalent can be used after .125" is milled off the stud bosses and the push rod holes opened
  Spark Plugs: Accepts 14mm-5/8' .460' reach tapered seat (Accel 274 or 276, AC-Delco 43TS or 44TS, Champion #670 or #802) or equivalent
  Intake Gasket: Fel-Pro #1204 or #1256 or equivalent
  Exhaust Gasket: Fel-Pro #1404 or #1405 or equivalent

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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