MOPAR MAGNUM 408 Crate Engine-Stealth

This is a very popular package for it's cost effectiveness and performance. When putting this combo together we wanted to find a good compromise between quality performance parts and total cost. We did not want to try to impress with a fancy carburetor or plug wires we wanted to install higher quality internal parts. Compare our parts selection vs others. Just to speak of a few of the features we upgraded the pistons from Keith Black hypereutectic to SRP forged, installed the 2.02" intake valves and as always, manganese bronze guides. We also allow for some camshaft options: we use our smallest cam as our base camshaft, however you can custom tailor the cam to fit the intended usage.


POWER RATING

370 hp @ 5,100 Rpm
512 ft/lb @ 4,300 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 crankshaft
  • CONNECTING RODS: 6.123" Scat I beam (rated to 700 hp) 
  • PISTONS: 9.75:1 SRP Forged
  • PISTON RINGS: Speed pro file fit
  • CAMSHAFT: Hydraulic roller, duration @ .050: 226 / 230, lift: .565"/.565" 110 LSA (optional camshaft)
  • TIMING CHAIN: 9 keyway adjustable billet double row
  • OIL PUMP: Precision Oil Pump
  • OIL PAN: 6 quart capacity
  • VIBRATION DAMPER: Powerbond
  • BALANCED: External
  • 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 1 ported)
  • ROCKER ARMS: 1.6 ratio roller
  • INTAKE MANIFOLD: Dual plane EFI airgap intake


 

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