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Grillo feels the Dart Big Chief is the finest head available to pull 1,100 hp out of a normally aspirated, single-four-barrel setup, right out of the box. Dart's "entry-level" CNC cylinder head ensures accurate and consistent results without requiring a lot of hand machining in the building process, thus providing considerable cost savings for Lizzard customers. This Big Chief came with a "Super Mod" 475cc port plus machined valve bowls, combustion chambers (86cc), and port entrances. The heads are then finished at the factory with hand-sized valve guides, and hand-blended bowls before assembly. View Related Article
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