
Over 600 HP to the crank!
520 HP/487 T Late Model 426 Hemi with RLD-H6 Camshaft and headers.
Owner Jeffrey Hanks hand ported intake and heads.

Late Model SRT8 6.1 (370 cubic inch) Hemi with RLD Performance upper end kit. RLD Performance Stage 3 CNC Intake Manifold, RLD Performance "Flowline Machined" Racing Cylinder Heads, factory valves, .650 lift PSI conical springs, , RLD-H1 Custom Roller Camshaft, RLD Upgrade Pushrods, 50lb injectors. Stock accessory drive, stock throttle body, stock rocker arm system and stock exhaust manifolds. 445HP/448T. 405ft/lbs average torque. Idles at 750 rpm. Idle at right. Engine Dyno Sheet for this 6.1 Hemi package is below. Note the high Volumetric Efficiency! Video at right.
Below - 565HP/562T 426 Hemi with RLD Performance Upper End Kit with RLD-H5 Custom Camshaft.
Below - 595HP/542T 426 Hemi. RLD Performance Upper End Kit with RLD-H7 Custom Camshaft.