Trick Flow® patented Twisted Wedge® 170 performance aluminum cylinder heads feature Trick Flow® revolutionary "twisted wedge" combustion chambers to build more midrange and top-end power without sacrificing bottom-end torque. Here's how it works: Trick Flow® engineers rotated the valves and moved them over the center of the cylinder bores. This optimizes the valve angles and the combustion chamber shape to dramatically boost airflow and allow for a more complete combustion of the air/fuel charge. And, unlike other brands, Trick Flow® Twisted Wedge® heads are the only aftermarket heads that can run 2.020 in./1.600 in. valves with stock, unmodified pistons and performance camshafts with up to 0.550 in. of lift. The Twisted Wedge® series heads are built for heavy-duty use, too. They have 0.560 in. thick combustion chamber walls and fire decks for added strength without a loss of cooling capacity, plus additional support risers in the water jackets for increased head gasket integrity. The Twisted Wedge® 170 heads are designed to be performance replacements for stock Ford heads and are 50-state emissions-legal on 1996 and earlier 289, 302, and 351W Fords (CARB E.O. #D-369-12). All Twisted Wedge® series heads work with most OEM and aftermarket intake and exhaust manifolds/headers. The heads come fully assembled and ready to install right out of the box with stainless steel valves (intakes are backcut for improved flow), valve springs, locks, retainers, ARP rocker studs, and guideplates. Bare cylinder head castings are also available.
Brand: Trick Flow Specialties
Manufacturer's Part Number: TFS-51400002
Cylinder Head Style: Assembled
Cylinder Head Material: Aluminum
Combustion Chamber Volume (cc): 61cc
Intake Runner Volume (cc): 170cc
Exhaust Runner Volume (cc): 66cc
CNC-Machined Intake Runner: yes
CNC-Machined Exhaust Runner: No
Intake Valve Diameter (in): 2.020 in.
Exhaust Valve Diameter (in): 1.600 in.
Maximum Valve Lift (in): 0.540 in.
Outside Diameter of Outer Spring (in): 1.470 in.
Number of Springs Per Valve: Single
Rocker Arm Studs Included: Yes
Rocker Arm Nut Thread Size: 3/8-24 in.
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplate Pushrod Size: 5/16 in.
Accessory Bolt Holes Drilled: Yes
Intake Valve Angle: 15
Exhaust Valve Angle: 17
Oiling Style: Through pushrod
Machined for O-Ring: No
Heat Crossover: Yes
Quantity: Sold as a pair
*These cylinder heads will accept factory emissions (AIR Injection) and are street ported.
*Some piston modification may be needed depending on your specific application.
*5.8L applications will have to drill head bolt holes to accept 1/2" bolts.
These heads are a big improvement over the iron (ported and milled) GT40 heads that I replaced. Definitely a power improvement over the E7Te and GT40 iron heads. These heads will provide more power as well as a nice weight saving. Both mean a faster car. These heads are very good quality and work well with the complete upper end kit. I would recommend this matching kit for someone looking to gain up to 135hp over a stock 5.0.
Trick Flow - Serious Horsepower
Horsepower doesn't happen by accident. It takes time, skill, and the right combination of parts to allow your engine to produce optimum power levels.
Trick Flow engineers use advanced Computer-Aided Design (CAD) work stations and high-tech 3D modeling to develop and analyze components quickly and accurately. Trick Flow machinists use state-of-the-art rapid physical prototyping, CNC-machining centers, and hot rodding know-how to turn designs into molds and foundry tooling.
Prototypes and products are subjected to hours of relentless testing on one of Trick Flow's dynamometers, and extensive road and race track data is gathered to guarantee parts perform as intended. Trick Flow's commitment to quality combined with a "zero defects" attitude ensures Trick Flow products will exceed your expectations.
From Lightning cylinder heads to Mustang camshafts, pistons to intake manifolds, Trick Flow is committed to making products that are designed and engineered to deliver power!
It is a modified 2002 gt premium auto. I have had the car for 3 years not and have enjoyed it every minute. Performance upgrades include late model restoration CAI, 70mm throttle body, 75 mm intake pl...