Trick Flow® Twisted Wedge® 11R 170 Cylinder Heads 53cc Chambers SBF TFS-52515301-C00 (each)

Trick Flow® Twisted Wedge® 11R 170, CNC Street Ported, Assembled, 53cc CNC Chambers, Small Block Ford, Sold Individually Combustion Chamber Volume (cc): 53 Intake Runner Volume (cc): 170cc Exhaust Runner Volume (cc): 66cc Cylinder Head Style: Assembled Cylinder Head Material: Cast aluminum Intake Port Shape: Rectangular Intake Valve Diameter (in.): 2.020 in. CNC-Machined Combustion Chamber: Yes CNC-Machined Intake Runner: Yes CNC-Machined Exhaust Runner: Yes Combustion Chamber Style: Twisted Wedge® Intake Port Location: Standard Exhaust Port Shape: Square Exhaust Port Location: Standard Spark Plug Style: Angle Intake Valves Included: Yes Exhaust Valves Included: Yes Exhaust Valve Diameter (in.): 1.600 in. Valve Springs Included: Yes Maximum Valve Lift (in.): 0.600 in. Camshaft Style: Hydraulic roller Outside Diameter of Outer Spring (in.): 1.295 in. Damper Spring Included: Yes Number of Springs Per Valve: Dual Retainers Included: Yes Retainer Material: Chromoly steel Locks Included: Ye