Something great just got better! Trick Flow® used advanced 3-D solid modeling and CAD tools (plus a couple decades' worth of racing experience) to turn its track-proven Twisted Wedge® design into the potent Twisted Wedge® 11R 205 head for serious performance enthusiasts and racers.
Trick Flow® Twisted Wedge® 11R 205 heads are direct replacements for previous Twisted Wedge® heads and work with all Twisted Wedge®-specific pistons. New high-velocity, race-inspired CNC Competition Ported runners have been optimized for today's popular bore and stroke combinations, and have a premium high-resolution finish for ultimate performance. Modified 11 degree intake and 13 degree exhaust valve angles and a restructured, CNC-profiled combustion chamber arrangement provide more airflow and performance potential.
Premium certified materials and components, along with the finest CNC tooling, are used to ensure uncompromising quality and durability, dimensional accuracy, and balanced flow from port to port. The fully machined castings are very strong and have a great looking, billet-like appearance.
Part Number: TFS-5261T661-C03
Combustion Chamber Volume (cc): 66
Intake Runner Volume (cc): 205cc
Exhaust Runner Volume (cc): 66cc
Cylinder Head Style: Assembled
Cylinder Head Material: Cast aluminum
Camshaft Style: Hydraulic roller
Intake Port Shape: Rectangular
Intake Valve Diameter (in.): 2.080 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
Intake Valves Included: Yes
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in.): 1.600 in.
Valve Springs Included: Yes
Maximum Valve Lift (in.): 0.650 in.
Outside Diameter of Outer Spring (in.): 1.295 in.
Damper Spring Included: Yes
Number of Springs Per Valve: Dual
Retainers Included: Yes
Retainer Material: Titanium
Locks Included: Yes
Lock Style: 7 degree
Valve Stem Seals Included: Yes
Rocker Arm Studs Included: Yes
Rocker Arm Nut Thread Size: 7/16 in.-20
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: 11
Exhaust Valve Angle: 13
Valve Guides Included: Yes
Valve Guide Material: Bronze
Valve Seats Machined: Yes
Valve Seat Machine Style: 3-angle
Valve Seat Material: Ductile iron
Cylinder Head Color: Natural
Steam Holes Drilled: No
Oiling Style: Through pushrod
Machined for O-Ring: No
Heat Crossover: No
Quantity: Sold individually.
Notes: Competition ported fully CNC machined, non-emissions heads. Trick Flow twisted Wedge 11R heads are machined for 1/2 in. head bolts; for customers with blocks that are machined for 7/16 in. head bolts, the use of TFS-51400419 head bolt bushings is required. Set-up for hydraulic roller cam shaft only.
