461ci 400HP BBC Marine Crate Engine

461ci 400Hp BBC Marine Crate Engine

Marine direct replacement Crate Engines start with a CNC race prepped 4 bolt main one piece rear seal block done on our Centroid 4-axis Block CNC machining center. CNC machining can easily correct all block dimensions to a blue print perfect block. Crank, rods, heads, are all reconditioned to perfect std or under size specifications.  Professionally Assembled then dyno tested with available intakes, carburetors, ignition systems for power and assembly procedure verification; 12 month warranty; (ask for exact details).



  • GM 4 Bolt Main One Piece Rear Main Seal CNC Prepped Block
  • Head Bolt Kit Installed and Plate Honed with Block
  • New Cam Bearings and Life Time Stainless Steel Freeze Plugs
  • GM 4.0″ Externally Balanced Nodular Iron Crank
  • GM I-Beam 6.135 Steel Rods with 3/8 Bolts
  • Clevite or King Main and Rod Bearings
  • GM 9.5:1 Compression Pistons
  • Plasma Moly Performance Ring Set
  • Comp Cams Or Erson Marine Hydraulic Cam
  • Comp Cams or Erson Hydraulic Lifters
  • Double Roller Heavy Duty Timing Set
  • GM Timing Cover Kit and TDC Pointer
  • Externally Balanced Harmonic Damper
  • GM Oval Port Steel Cylinder Heads
  • Original Equipment Intake and Exhaust Valves
  • GM Std Valve Springs, Steel Retainers and Locks
  • Fel Pro Complete Marine Gasket Set
  • GM 1.7 Steel 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 Tested with Dual Plane 4150 Series Intake Manifold (available)
  • Dyno Tested with Holley 850cfm Double Pumper Carburetor (ava)
  • Dyno Tested with HEI Distributor, comes with Spark Plugs
  • free 48 freight to continental USA (see bottom for details)

Other Upgrade Options are Available, please ask

Comp Cams or Erson Hydraulic Roller Camshaft and Retro Fit Lifters
+ $ 595.00
JE or Wiseco Forged 10:1 Pistons
+ $ 495.00
Edelbrock Dual Plane Performer RPM Intake Manifold
+ $ 395.00
Holley or QFT 750 to 850cfm Marine Specific Application Carburetor
+ $ 690.00
MSD Billet Ready to Run Distributor and Coil Dyno Tested and Tuned and Needs no Ignition Box
+ $ 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 up to $400 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 $400. Total cost of all charges if any will be known to you before we ship. This engines requires the use of ZDDP oil of 2000ppm to be used at all times for warranty to be valid. Flat tappet style lifters, rocker arm ball style rockers and push rods require this additive for ever. It is commonly found in LUCAS Hot Rod Oils.

Comments are closed.