461ci 400HP BBC Marine Crate Engine

461ci 400Hp BBC Marine Crate Engine

These Marine basic direct replacement Crate Motors are dyno test and tuned units. Blocks are prepared on our state of art 4-axis CNC machining center. The CNC corrects all block dimensions to a blue print near perfect condition. Each engine is dyno tested and tuned with available intake, carburetors, ignition systems and comes with a 18 month warranty; (ask for exact details).



  • GM SD 4 Bolt Main One Piece Rear Main Seal CNC Prepped Block
  • Brass or Stainless Steel Life Time Freeze Plugs Installed
  • Head Bolt Kit Installed and Plate Honed with Block
  • GM 4.0″ Externally Balanced Nodular Iron Crank
  • GM I-Beam 6.135 Steel Rods
  • Clevite or King Main and Rod Bearings
  • GM 9.5:1 Compression Pistons
  • Plasma Moly Performance Ring Set
  • Comp Cams Or Erson Marine Hydraulic Roller Cam
  • Comp Cams or Erson Hydraulic Roller Lifters
  • Double Roller Heavy Duty Timing Set
  • GM Timing Cover Kit and TDC Pointer
  • Externally Balanced Harmonic Damper
  • GM Oval Port Steel Cylinder Heads
  • Stainless Steel Intake and Exhaust Valves
  • Comp Cams or Erson 1.5″ Hydraulic Roller Springs, Retainers and Locks
  • Fel Pro Complete Marine Overhaul Gasket Set
  • GM 1.7 Rocker Arms
  • GM Push Rods
  • GM Short Aluminum Valve Covers
  • GM Oil Pump and Proper Pick Up Tube Tig Welded
  • GM 8qt. Oil Pan with One Piece Oil Pan Gasket
  • Dyno tuned Dual Plane 4150 Series Intake Manifolds are available
  • Dyno tuned Holley 750cfm Double Pumper Carburetors are available
  • Wires and NGK Plugs are included, HEI Distributors are available
  • free 48 freight to continental USA (see bottom for details)

Other Upgrade Options are Available, please ask

Edelbrock Dual Plane Intake Manifold
+ $ 395.00
Holley or QFT 750cfm Marine Specific Application Carburetor
+ $ 690.00
MSD Billet Ready to Run Distributor and Coil Dyno Tested and Tuned
+ $ 495.00
Steel Billet Externally Balanced Fly Wheel for Marine Applications
+ $ 350.00
AwesomeEngines® Powder Coated CNC Engraved Tall or Short Valve Covers
+ $ 250.00

Dyno Tested and Tuned with Exxon 87° Pump Gas • Vacuum Pump • HP Corrected to Sea Level

Free insurance and freight of $450 applies to this item being shipped to a UPS terminal or commercial address in the con. 48 states for your zip code. Any handling fees, residential, lift gate service, out of area charges may apply over the $450. Total cost of all charges if any will be known to you before we ship.

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