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Twisted Wedge 170cc Bare

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$35.00 (Fixed shipping cost)
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Product Description

Trick Flow® patented Twisted Wedge® 170 performance aluminum cylinder heads feature
Trick Flow® revolutionary "twisted wedge" combustion chambers to build more mid-range
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 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 up to 0.550 in. 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 as a
performance replacement for stock Ford heads and are 50-state emissions-legal on 1996
and earlier 289, 302, and 351W Fords (CARB E.O. number 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.
Cylinder Head Style   Bare
Cylinder Head Material   Aluminum
Cylinder Head Finish   Natural
Combustion Chamber Volume (cc)   61
CNC-Machined Combustion Chamber   No
Intake Runner Volume (cc)   170cc
Exhaust Runner Volume (cc)   66cc
CNC-Machined Intake Runner   No
CNC-Machined Exhaust Runner   No
Combustion Chamber Style   Heart
Intake Port Location   Standard
Exhaust Port Shape   Square
Exhaust Port Location   Standard
Intake Valves Included   No
Intake Valve Diameter (in)   2.020 in.
Exhaust Valves Included   No
Exhaust Valve Diameter (in)   1.600 in.
Valve Springs Included   No
Damper Spring Included   No
Retainers Included   No
Locks Included   No
Valve Stem Seals Included   No
Rocker Arm Studs Included   No
Rocker Arms Included   No
Rocker Arm Nuts Included   No
Guideplates Included   No
Accessory Bolt Holes Drilled   Yes
Intake Valve Angle   15
Exhaust Valve Angle   17
Valve Guides Included   Yes
Valve Guide Material   Manganese bronze
Valve Seats Machined   No
Valve Seat Machine Style   Un-machined seat
Valve Seat Material   Tungsten
Steam Holes Drilled   No
Oiling Style   Through pushrod
Machined for O-Ring   No
Heat Crossover   Yes

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