These are the TFS Ford Twisted Wedge 11R 170cc intake runner fully CNC ported assembled aluminum heads with 53cc chambers, Chromoly Steel. 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.
Trick Flow Twisted Wedge 11R 170 cylinder heads are available fully assembled or as bare castings. 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. 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. We do not lower invoice values since it is a violation of US and International custom laws. Let us work to resolve your problem so everyone is happy. Suite D7 Costa Mesa, CA 92627. And no repairs will be provided, nor labor charges covered by TREperformance Inc. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Engines & Engine Parts\Cylinder Heads". The seller is "treperformance" and is located in this country: US. This item can be shipped worldwide.