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 ... 023012-2 023012-3 application bare head assembled head assembled head assembled ... head bare head assembled head assembled head bare head assembled head ... assembled head bare head assembled head assembled head des 18 degree 18 degree ... 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 ...