Trickflow Powerport Cylinder Head, Big Block Ford 429/460, 325cc Intake, Ti. Ret., Max Lift .850

Serious horsepower for your Big Block Ford engine, heads sold individually and are fully assembled. Trick Flow PowerPort® cylinder heads for Ford 429/460 engines deliver significant horsepower and torque gains over similar-style cylinder heads. Highlights include an extremely efficient chamber design for more complete combustion and exhaust ports raised .270" from stock for increased airflow. Trick Flow PowerPort 325 heads are available with two runner configurations: • Heads with CNC Street Ported runners are great entry-level CNC heads featuring fully CNC-machined runners and combustion chambers with a standard resolution surface finish for significant performance gains over regular cast heads. • Heads with CNC Competition Ported runners feature CNC-profiled combustion chambers and runners with a premium high resolution surface finish for maximum, all-out performance.
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): 2.200 in. Exhaust Valves Included: Yes Exhaust Valve Diameter (in): 1.760 in. Valve Springs Included: Yes Maximum Valve Lift (in): 0.850 in. Outside Diameter of Outer Spring (in): 1.640 in. Damper Spring Included: No Number of Springs Per Valve: Dual Retainers Included: Yes Retainer Material: Titanium 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.

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