o war 18° raised port 275 285 intake heads engineered for the serious 5.0l racer ... these highly sophisticated new 10° cylinderheads come with 275cc or humongous ... .they are the new king of the hill for ford enthusiasts cast from 355-t6 aluminum ... alloy six bolt-per-cylinder matches man o war blocks available with ... 275cc 235/200cc intake street/strip heads the ideal street/strip head the new 18 ... booster for stock or modified 302/351 fords cast from 355-t6 aluminum alloy ... standard ford 4 bolts-per-cylinder attachment available with 200cc or ... 64cc 64cc 64cc 64cc 64cc 64cc man o war aluminum 302/351 fordcylinderheads 18° valve ...