No other 302/351 style Ford block compares to the ruggedness of World Products’ MAN O’WAR family of engine blocks. World has upgraded the iron to a 40,000 psi alloy and added material to the main webs. The front web is now .080” thicker and the center three are increased by .030”. World also changed from 1/2” main cap fasteners to 7/16” ARP fasteners, leaving more material in the webs in order to strengthen the main web structure further. The Man O’War is the only SBF block with six head bolts per cylinder for secure gasket clamping and now uses standard head bolts or studs. The cylinder barrels are extended into the crankcase at the bottom by 1/2” to provide superior piston support with long stroke crankshafts.
NEW 40,000psi cast iron construction = NEW Increased main web thickness = NEW 7/16 fasteners increase web strength = NEW low restriction priority main oiling = 6 head bolts/cylinder - exclusive feature = Now uses standard head bolts or studs PN Bolts 154-3603 / Studs WPI705027 = 8.200”, 9.200” or 9.500” deck heights = Bores to 4.200” (3.995” or 4.120” std.) = Clearance for 3.500” crank w/8.200 Deck = Clearance for 4.250” crank w/9.500 Deck = Clearance for 4.000” crank w/9.200 Deck = Splayed 4-bolt main caps w/dowels & stepped register, ARP fasteners = Improved oil drain back from heads = Accepts standard SBF components = Provision for dry sump = Approximately 200 lbs