In the May 2005 issue of MOPAR MUSCLE, we show you the new Stage V RatBuster dual Holley intake manifold for 426 Hemi applications. On our520ci, Stage V, Hemi conversion-powered '67 Dart test car, the RatBuster and dual Holley 750s proved their worth by dropping eighth-milee.t.'s by a full two-tenths of a second and increasing trap speed by animpressive 4 mph. On the chassis dyno, the Holley-fied Rat Busteroutperformed the car's previous Street Hemi induction by 21 hp. In thisexclusive www.moparmuclemagazine.com web site story, we will explore the simplemodifications required to take a set of box stock Holley 4160 carbs andgive them a short-bowl conversion so they fit the new Stage V RatBuster.
