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Part Number: TFS-51410004-M61 Part Type: Cylinder Heads Product Line: Trick Flow® Twisted Wedge® 170 Cylinder Heads for Small Block Ford Cylinder Head Style: Assembled Cylinder Head Material: Aluminum Cylinder Head Finish: Natural Combustion Chamber Volume (cc): 61 CNC-Machined Combustion Chamber: Yes Intake Runner Volume (cc): 170cc Exhaust Runner Volume (cc): 66cc CNC-Machined Intake Runner: No CNC-Machined Exhaust Runner: No Combustion Chamber Style: Twisted Wedge® Intake Port Shape: Rectangular Intake Port Location: Standard Exhaust Port Shape: Square Exhaust Port Location: Standard Intake Valves Included: Yes Intake Valve Diameter (in): 2.020 in. Exhaust Valves Included: Yes Exhaust Valve Diameter (in): 1.600 in. Valve Springs Included: Yes Maximum Valve Lift (in): 0.600 in. Outside Diameter of Outer Spring (in): 1.460 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 Arm Nut Thread Size: 3/8-24 in. Rocker Arms Included: No Rocker Arm Nuts Included: No Guideplates Included: Yes Guideplate Pushrod Size: 5/16 in. Accessory Bolt Holes Drilled: Yes Intake Valve Angle: 15 Exhaust Valve Angle: 17 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: Yes Quantity: Sold individually.




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