Breakdown of Included Items

Features:

• All-billet, A-356 virgin aluminum cylinder heads
• The ultimate in performance and durability for turbocharged or blower engine applications
• Raised valve cover rail
• 380 cc rectangle intake ports flow over 440 cfm
• Uses T&D shaft system

Cylinder Head Specifications:

• Rectangle port
• 388cc intake port volume
• 119cc combustion chamber volume
• 2.350 in. x 5.568 in. o.a.l. intake valves with 11/32 in. stem diameter
• 1.880 in. x 5.494 in. o.a.l. exhaust valves with 11/32 in. stem diameter
• 1.625 in. diameter valve springs - 745 lb. open pressure, 250 lb. closed pressure
• 2.050 in. valve spring installed height
• .800 in. max lift
• 1.625 in. 10-degree titanium spring retainers
• 7/16 in. rocker studs
• 3/8 in. guide plates
• 11/32 in. valve seals
• Angled spark plug configuration, 14mm thread, .750 in. (3/4) reach

Specifications:

• 70 ft-lb. head torque
• 40-45 ft-lb. rocker stud torque
• Angle milling: .0066' per cc
• Flat milling: .0050' per cc
• Standard rocker arms, lifters and pushrod slots
• 2-degree valve rolled piston
• .600 in. raised exhaust pattern
• Spring pockets should not be cut any larger or deeper than 1.625'
• Accessory bolt holes are drilled