• Trickflow 170 11R Heads

    $2,568.00 $2,475.00
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    One of Trickflow's newest offerings: the 170cc 11R head. 

    Something great just got better! Trick Flow used advanced 3D solid modeling and CAD tools (plus a couple decade's worth of racing experience) to turn its track-proven Twisted Wedge® design into the potent Twisted Wedge 11R 170 head.

    Trick Flow Twisted Wedge 11R 170 heads are a direct replacement for previous Twisted Wedge heads and work with all Twisted Wedge-specific pistons. New high velocity, race-inspired CNC Street Ported runners have been optimized for today's popular bore and stroke combinations, and have a standard resolution surface finish for significant performance gains. Modified 11° intake and 13° exhaust valve angles and a restructured, CNC-profiled combustion chamber arrangement provides more airflow and performance potential. 

    Premium certified materials and components, along with the finest CNC tooling, are used to ensure exceptional 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.

    Cylinder Head Style:Assembled
    Cylinder Head Material:Aluminum
    Intake Port Shape:Rectangular
    Intake Valve Diameter (in):2.020 in.
    Cylinder Head Finish:Natural
    Combustion Chamber Volume (cc):53
    CNC-Machined Combustion Chamber:Yes
    Intake Runner Volume (cc):170cc
    Exhaust Runner Volume (cc):66cc
    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.
    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:Yes
    Lock Style:7 degree
    Valve Stem Seals Included:Yes
    Rocker Arm Studs Included:Yes
    Rocker Arm Nut Thread Size:7/16-20 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: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
    Steam Holes Drilled:No
    Oiling Style:Through pushrod
    Machined for O-Ring:No
    Heat Crossover:No
    Quantity:Sold individually.
    Notes:Street ported fully CNC, non-emissions head. 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.