AKRON, OH—Trick Flow has taken its proven formula for creating complete top-end kits for GM LS engines—the same formula that helped make up to 515 horsepower on a stock GM 5.7L LS1 short block—and developed a potent top-end kit for GM 5.3L LS-powered trucks. When tested on a GMPP LS327 short block, this new Trick Flow GenX® Top-End Engine Kit for GM LS Trucks made 455 horsepower and 425 ft.-lbs. of torque.

The Trick Flow GenX Top-End Engine Kit for GM LS Trucks takes the guesswork out of buying top-end components by bringing together performance-matched components in one complete, power-building package. It includes a pair of GenX 205 cylinder heads (TFS-30500001-C00), a hydraulic roller camshaft (TFS-30602001), heat-treated chromemoly pushrods (TFS-21407500), Harland Sharp roller rocker arms, and GM Performance Parts head and exhaust gaskets and bolts—everything needed to add 50-70 horsepower at the rear wheels.