461ci 440 Hp BBC Marine Crate Engine

461ci BBC Marine Crate Engine

461ci Marine Crate Engine is a direct GM replacement for any type of marine application where long term reliable power and performance are expected. Blocks are prepared on our state of art Centroid 4-axis CNC machining center that corrects block dimensions to blue print perfect at standard 4.280″ bore. Each completed engine is dyno tested and tuned for long term reliable performance and power.


9.800″ Deck | 4.280″ Bore | 4.000″ Stroke | 6.135″ Rods | 440Hp @ 4800 RPM


  • GM GEN V 4 Bolt Main Block Fully CNC Race Prepped
  • Brass or Stainless Steel Life Time Freeze Plugs
  • SHP Head Bolt Kit Plate Honed with Block
  • GM 4.000″ Externally Balanced Crank
  • GM 6.135″ I Beam Steel Rods with 3/8 Bolts
  • King Main and Rod Bearing Set
  • Speed Pro 8:1 Compression Hypereutectic .030″ Pistons
  • Speed Pro Moly Ring Set
  • Competition Cams or Erson Hydraulic Roller Camshaft
  • Competition Cams or Erson Hydraulic Roller Lifters
  • LPC or PBM High Performance Double Roller Timing Set
  • GM Black Timing Cover and TDC Verified Pointer
  • Externally Balanced 8″ GM Harmonic Damper
  • GM Peanut Port Steel Heads Totally Freshened Like New
  • GM Stainless Steel Valves
  • Competition Cams Bee Hive Hydraulic Roller Springs and Retainers
  • Fel Pro Marine Hi-Performance Gasket Set
  • Manley .120″ Wall Chrome Moly Push Rods
  • GM Pedestal Rockers, Guide Plates and Fasteners
  • GM Short CNC Engraved Aluminum Valve Covers
  • GM High Pressure Oil Pump and Welded Pickup Tube
  • GM 8 Quart Oil Pan
  • Edelbrock Performer RPM Air Gap Intake Manifold
  • HOLLEY or QFT 850 cfm Marine Carburetor with Electric Choke
  • MSD Ready to Run Distributor, Coil, 8.5mm Wires and NGK Spark Plugs
  • AwesomeEngines® Free 48 State Freight


Dart Big M Ductile Splayed Cap Racing Block Fully CNC Race Prepped
+ $1575.00
489ci Ext-Bal Engine CNC Machined, Plate Honed Finished to a 4.280″ Bore, 4.250″ Stroker Nodular Crank, 6.135″ Rods and Pump Gas 87° Pistons
+ $ 975.00
489ci Int-Bal 4340 Forged 4.250″ Crank, 6.385″ H Beam FF Rods ARP 7/16 Bolts, 10:1 Pump Gas JE or Wiseco Forged Pistons, File to Fit Rings, Dampener
+ $2275.00
Dart 19000172M 275cc Marine Coated Aluminum Oval Port Heads, Intake, 950cfm Carburetor for up to 600Hp, Roller Tip Rockers, .135″ Push Rods
+ $1975.00
Dart 1910032M 310cc Marine Coated Steel Square Port Heads 489ci, Intake, 950cfm Carburetor for up to 600Hp, Roller Tip Rockers, .135″ Push Rods
+ $1475.00

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

Free Freight of $350 Applies to Engine Shipped to a Commercial Address or a Terminal Closest to Your Zip Code for Pickup in the 48 States.

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