This head is an unassembled bare casting that has been machined with valve guides and valve seats installed. This head features a 70 cc combustion chamber and does NOT include rocker studs, valves, springs retainers, or locks.

Features

• High flowing intake port with over 279 CFM of flow
• Competition valve job with blended bowls
• Strong casting from A-356 aluminum is easily repairable
• Accessory Bolt Holes are Drilled

Cylinder Head Specifications

• Intake Port Volume: 215 cc
• Combustion Chamber Volume: 70 cc
• Valve Sizes: Designed for 2.080 in. Intake / 1.600 in. Exhaust with 11/32 in. Stem Diameter (Valves Not Included)
• Spark Plug Configuration: Straight
• Manganese Bronze Valve Guides

Installation Notes

• Torque Heads: 70 ft.-lbs.
• Torque Rocker Studs: 40-45 ft.-lbs.
• Recommended Intake Gasket: Fel-Pro 375-1205
• Recommended Head Gaskets: Fel-Pro 375-1003 (350 ci) / 375-1004 (400 ci) or Cometic 245-C5399 (350 ci) / 245-C5403 (400 ci)
• Recommended Exhaust Gaskets: Fel-Pro 375-1406
• Recommended Head Bolts: ARP 070-134-3601 or Manley 660-42313
• Recommended Head Studs: ARP 070-134-4001 (6-point)
• Recommended Intake Manifold: Brodix HV 1014 (158-1014) / HV 1016 (158-1016)
• Spark Plug Specs: 14 mm Thread, .750 in. (3/4 in.) Reach, Gasket Seat
• Valve Angle: 23 Degree
• Angle Milling: .0078 in. per cc
• Flat Milling: .0060 in. 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 in. 

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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