World’s engineering team has developed what is the ultimate competition cylinder head for 302/351 Ford small block applications. It features a highly advantageous 10° valve angle (with parallel rocker arm mounting) and some humongous ports. The “as-cast” intake runners are available in 275 and 285cc with huge 102cc exhaust ports. Add the CNC porting option and a 310cc intake runner is yours. Designed for use with all power-adders, the 10° MAN O'WAR comes with provisions to use two extra head bolts per cylinder as is offered with the companion MAN O'WAR block.
INTAKE MANIFOLD:
The recommended Intake Manifold for these heads is theEdelbrock 2868. The Intake face of the manifold MUST be milled to fit the Lifter Valley. The Intake Ports will then match up. A few NEW bolt holes will then be needed to be drilled & tapped IN THE HEAD to bolt down the Intake Manifold properly. A custom sheet metal manifold may also be used.
They’re available bare, or in three different assemblies that are designed to match your camshaft’s valve spring requirements. A multi-angle valve job and Manley stainless steel valves make the assemblies an excellent value and a real time-saver for engine builders.
TECHNICAL SPECS
Casting ID Number: WOR-081
Material: 355-T6 alloy high density aluminum
Valve Seats: Intake (hardened), exhaust (hardened)
Valves: 2.250 Intake, 1.625 Exhaust
Valve Guides: Manganese bronze
Spring Seats: Machined for 1.560"
Valves: Manley stainless steel valves in assemblies
Guide Plates: Special World part #830463-8
Rocker Arms: Shaft mount system required, JESEL part #KPS371149
(use of 1.73 ratio will require elongation of pushrod holes)
Intake Runner: 275cc or 285cc, standard port location
Exhaust Ports: 102cc, standard location
(dual exhaust bolt pattern to accommodate large custom headers)
Combustion Chamber: 64cc
Spark Plug: 14mm .750" reach gasket style
Valve Job: Multi-angle intake and radiused exhaust
Valve Cover Rail: Raised
Valve Angle: Stock 10°
Accessory Bolt Holes: Stock
SPRING SPECS
1.550": 200 lbs. @ 1.900", 480 lbs. @ 1.200", coil bind @ 1.150", max lift @ .700"
HEAD FLOW 275cc @ .700 LIFT
347 intake, 231 exhaust (Super Flow 1050)
373 intake, 251 exhaust (Super Flow 600)
CNC Ported 310cc @ .800 Lift
409 intake, 266 exhaust (Super Flow 600)
All heads flowed with a standard .750" intake plate, without exhaust tube, and 28" of water. CLICK HERE FOR COMPLETE HEAD FLOW DATA ON ALL OUR HEADS