For maximum performance form an LS-series engine, World’s WARHAWK 12° heads are the answer. As a result of superior port design and exclusive RightCast technology, the WARHAWK 12° has 285cc intake and 106cc exhaust runners that flow incredible numbers.
If even more flow is desired, World offers CNC-ported versions of this head that boast 296cc intake and 110cc exhaust runners. The ports were designed by noted LS specialist Kuntz & Co. and they’re dyno-proven to crank out the power!
Available as bare castings or in race-ready assemblies that have a multi-angle intake valve job and radiused exhaust, are equipped with stainless Manley 2.200” diameter intake and 1.600” exhaust valves, high performance springs and Manley chrome moly retainers. Compatible with stock LS7 rocker arms and integral stands. The heads can accommodate 1.625 diameter valve springs and valves with an overall length of 5.500”.
An important feature of the WARHAWK 12° head is that it comes with two extra bold holes per cylinder (same as WARHAWK LS7X blocks) to provide extra sealing power for power adder combinations with higher combustion pressures.
TECHNICAL SPECS
Casting ID Number: WOR-076A, B
Material: 355-T6 alloy high density aluminum
Valve Seats: Intake (hardened), exhaust (hardened)
Valve Guides: Manganese bronze
Spring Seats: Machined for 1.560" (can be machined for 1.625")
Valves: Manley stainless steel valves in assemblies
Valve Diameter: 2.200" intake, 1.600" exhaust (5/16" stem) as cast, 2.200" intake, 1.600" exhaust (5/16" stem) CNC ported
Rocker Arms: Stock LS7 rockers and integral stands
Intake Runner: 285cc, standard port location
Exhaust Ports: 106cc, standard location
Combustion Chamber: 64cc or 72cc
Spark Plug: 14mm .750" reach gasket style
Valve Job: Multi-angle intake and radiused exhaust
Valve Cover Rail: Raised .A34600" for aftermarket valvetrain
Valve Angle: Stock 12°
Accessory Bolt Holes: Stock
Spring Specs
1.437": 125 lbs. @ 1.810", 340 lbs. @ 1.210", coil bind @ 1.160", max lift @ .600"
1.550": 200 lbs. @ 1.900", 480 lbs. @ 1.200", coil bind @ 1.150", max lift @ .700"
Head Flow @ .700 Lift
336 intake, 193 exhaust (Super Flow 1050)
343 intake, 219 exhaust (Super Flow 600)
CNC Ported Head @ .800 Lift
386 intake, 265 exhaust (Super Flow 1050)
409 intake, 281 exhaust (Super Flow 600)
All heads flowed with a standard .750" intake plate, without exhaust tube, and 28" of water.
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