The new ported 318 heads worked so well that Chrysler is now offering them in fully assembled form. This, then, was the ultimate combination: A 9:1 318 that produced 331 hp with only a .455-inch-lift ...

For years, Chrysler's Mopar Performance/Direct Connection folks have been refining their coordinated "LA" small-block engine "go-fast" performance recipes, but up to now all development and ...