Trickflow PowerPort CNC Ported Cylinder Head, Big Block Ford 429/460, 325cc Intake, Max Lift .680

Cylinder Head Style: Assembled

Cylinder Head Material: Aluminum

Cylinder Head Finish: Natural

Combustion Chamber Volume (cc): 78

CNC-Machined Combustion Chamber: Yes

Intake Runner Volume (cc): 325cc

Exhaust Runner Volume (cc): 145cc

CNC-Machined Intake Runner: Yes

CNC-Machined Exhaust Runner: Yes

Combustion Chamber Style: Heart

Intake Port Shape: Round

Intake Port Location: Standard

Exhaust Port Shape: D-port

Exhaust Port Location: Raised

Spark Plug Style: Angle

Intake Valves Included: Yes

Intake Valve Diameter (in): 2.250 in.

Exhaust Valves Included: Yes

Exhaust Valve Diameter (in): 1.760 in.

Valve Springs Included: Yes

Maximum Valve Lift (in): 0.680 in.

Outside Diameter of Outer Spring (in): 1.550 in.

Damper Spring Included: Yes

Number of Springs Per Valve: Dual

Retainers Included: Yes

Retainer Material: Chromoly

Steel Locks Included: Yes

Lock Style: 10 degree

Valve Stem Seals Included: Yes

Rocker Arm Studs Included: Yes

Rocker Arms Included: No

Rocker Arm Nuts Included: No

Rocker Arm Nut Thread Size: 7/16-20 in.

Guideplates Included: Yes

Guideplate Pushrod Size: 3/8"

Valve Cover Mounting Style: Perimeter bolt

Accessory Bolt Holes Drilled: Yes

Intake Valve Angle: 15/5

Exhaust Valve Angle: 15.25/4.5

Valve Guides Included: Yes

Valve Guide Material: Bronze

Valve Seats Machined: Yes

Valve Seat Machine Style: 3-angle

Valve Seat Material: Ductile iron

Steam Holes Drilled: No

Oiling Style: Through pushrod

Machined for O-Ring: No

Heat Crossover: No

Quantity: Sold individually

Notes: Requires a Cobra Jet header. Exhaust port is raised 0.270 in. over stock.