CHRYSLER 11-13 TRANSFER CASE

The ATK ENGINES X473 is a 320 horsepower crate engine (410 lb-ft torque) based on an OE Magnum roller block from 1993-2001. It features a 360CI displacement with a bore/stroke up to 4.060” x 3.580”. Key components include an OE cast crankshaft, OE 6.123” rods, and hypereutectic 9:1 compression pistons with Moly rings. The valvetrain features a hydraulic roller camshaft with an OE Magnum grind, double roller timing chain, and OE Magnum cast iron cylinder heads (65cc chambers, 1.78/1.50 valves, steel 1.6 pedestal rockers). It includes an OE front sump 5qt oil pan, Melling STD volume oil pump, internally balanced flexplate/flywheel (requires externally balanced converter), and an externally balanced balancer. Fuel and air are managed by an Edelbrock Performer RPM Air-Gap dual plane intake manifold, Pro Billet RTR distributor (iron gear), OE early water pump, Quick Fuel 670CFM vacuum secondaries electric choke carburetor, and a mechanical fuel pump. Ignition uses Autolite #3923 spark plugs and 8mm spark plug wires.