Trickflow PowerPort Cylinder Head, Big Block Ford A460, 340cc Intake, Ti. Ret., Max Lift .850, 83cc Chamber

Cylinder Head Style: Assembled
Cylinder Head Material: Aluminum
Cylinder Head Finish: Natural
Combustion Chamber Volume (cc): 83
CNC-Machined Combustion Chamber: No
Intake Runner Volume (cc): 340cc
Exhaust Runner Volume (cc): 172cc
CNC-Machined Intake Runner: No
CNC-Machined Exhaust Runner: No
Combustion Chamber Style: Heart
Intake Port Shape: Rectangular
Intake Port Location: Raised
Exhaust Port Shape: Round
Exhaust Port Location: Raised
Spark Plug Style: Angle
Intake Valves Included: Yes
Intake Valve Diameter (in): 2.350 in.
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in): 1.880 in.
Valve Springs Included: Yes
Maximum Valve Lift (in): 0.850 in.
Outside Diameter of Outer Spring (in): 1.640 in.
Damper Spring Included: Yes
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: 13/5
Exhaust Valve Angle: 9.5/5
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 an A460 specific intake manifold and custom-built header. Standard big block Chevy exhaust flange bolt pattern. Exhaust port is raised 1.500 in. over stock. Intake port is raised 1.000 in. over stock.