MOPAR MAGNUM 408 Crate Engine-Stealth

Our MAGNUM 360 based 408 stroker offers bang-for-the-buck like few other engines do or that other crate engine builders can. Because we are a MOPAR specific custom engine builder, everything we do is designed to maximize the Mighty Magnum to give you incredible power at an incredibly affordable price. Thanks to our in-house, CNC ported Stealth/EQ iron heads and custom grind camshaft, this engine tickles the dyno with close to 500hp and serves up well more than 500lb-ft of torque. These numbers are generated using our base cam, however we can custom tailor the cam to fit your intended usage while still keeping the combo budget friendly.


POWER RATING

485 hp @ 5,400 Rpm
540 lb-ft @ 4,400 Rpm

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408 Stealth Crate Engine Dyno Chart & Build Specs

 

  • BLOCK: 408 ci roller, 2-bolt main With ARP main studs
  • CRANKSHAFT: 4.000" Scat cast crankshaft
  • CONNECTING RODS: 6.123" Scat I beam (rated to 700 hp) 
  • PISTONS: 10.0:1 ICON Forged
  • PISTON RINGS: Speed pro file fit
  • CAMSHAFT: Hydraulic roller, duration @ .050: 230 / 242, lift: .576"/.563" 109 LSA (optional camshaft)
  • TIMING CHAIN: 9 keyway adjustable billet double row
  • OIL PUMP: Melling
  • OIL PAN: 6 quart capacity
  • VIBRATION DAMPER: Powerbond
  • BALANCED: Internal
  • HEAD GASKETS: Felpro
  • HEAD FASTENERS: ARP head bolts
  • CYLINDER HEADS: New Magnum iron castings with Manganese bronze valve guides and 2.02" intake valves / 1.625" exhaust valves (These heads are Level 2 CNC ported)
  • ROCKER ARMS: 1.6 ratio roller
  • INTAKE MANIFOLD: Dual plane EFI airgap intake