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 Arm Nut Thread Size: 7/16-20 in. Valve Springs Included: Yes Maximum Valve Lift (in): 0.600 in Outside Diameter of Outer Spring (in): 1.460 in. Exhaust Valves Included: Yes Exhaust Valve Diameter (in): 1.600 in. Cylinder Head Style: Assembled Cylinder Head Material: Aluminum Cylinder Head Finish: Natural Combustion Chamber Volume (cc): 70 CNC-Machined Combustion Chamber: Yes Intake Runner Volume (cc): 225cc Exhaust Runner Volume (cc): 95cc CNC-Machined Intake Runner: Yes CNC-Machined Exhaust Runner: Yes Combustion Chamber Style: Heart Intake Port Shape: Rectangular Intake Port Location: Standard Exhaust Port Shape: Square Exhaust Port Location: Raised Intake Valves Included: Yes Intake Valve Diameter (in): 2.080 in. Trick Flow® High Port® 225 cylinder heads are available fully assembled or as bare castings. Other features include fully CNC-profiled combustion chambers with port-to-valve seat blending (bowl blending) and raised valve cover rails. Plus, interlocking ductile iron seats are used to handle the stresses of high-heat, high-horsepower applications. The entry into the intake runner has been reshaped to help seal the area along the port roof and thicker port walls, increase strength, and provide additional material for porting. Trick Flow® High Port® 225 heads have top-of-the-line CNC Competition Ported runners with a high-resolution surface finish for maximum airflow and power over the entire rpm range. Raised exhaust runners, extra-strong castings, and thick decks for additional rigidity and gasket integrity, superior cooling characteristics, and, most importantly, excellent airflow. Looking for serious horsepower? Trick Flow® High Port® 225 cylinder heads are specifically designed for large cubic inch small block Ford engines, as well as engines with high-boost superchargers or turbos, big shot nitrous oxide systems, and other mega-power combinations. These are the TFS Ford High Port 225cc intake runner aluminum heads with 70cc chambers, Titanium Retainers. Trickflow SBF Twisted Wedges cylinder head.
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