427ci 500HP SBC Marine Crate Engines

427ci 500Hp SBC Marine Crate Engines

Marine Crate Engines are available from 350 to 454ci: 4.0″ bore x 3.48 stroke for 350ci,  4.185″ bore x 4.125 stroke for 454ci and all in between. Brand new direct replacements for marine needs. Built for marine applications where long lasting reliable power is needed. New 4340 steel internally balanced cranks, I-beam steel rods, forged pistons, hydraulic roller cams are included. Dart blocks and heads are machined on our state of art Centroid 4-axis CNC machining center. This corrects all block dimensions to blue print perfect. Each engine dyno tested extensively to verify power. These are the best reliable pump gas friendly marine engines going on the market.


9.0″ Deck | 4.0 to 4.185″ Bore | 3.48 to 4.0″ Stroke | 5.7 to 6.0″ Rods | up to 500Hp @ 5500 rpm | See Upgrades


  • Dart 31161111L or 31161211L SHP Splayed 4 Bolt Main Race Blocks
  • AwesomeEngines® 190,000 PSI Head Stud Kit Plate Honed with Block
  • Brass or Stainless Steel Life Time Freeze Plug Kit Installed
  • AwesomeEngines® 3.48 to 4.0″ Internally Balanced 4340 Steel Cranks
  • AwesomeEngines® I-Beam Rods w/7/16 Bolts
  • King “HP” Race Series Main and Rod Bearing Set
  • JE or Wiseco 8 to 11:1 Forged Racing Pistons
  • Total Seal Plasma Moly Ring Package
  • Comp Cams .550″ Lift Marine Hydraulic Roller Cam
  • Comp Cam or Erson Hydraulic Roller Lifters
  • Cloyes Heavy Duty Double Roller Timing Set
  • AwesomeEngines® Polished Aluminum Timing Cover
  • AwesomeEngines® New Internally Balanced Harmonic Damper
  • Dart Iron Eagle 165cc S/S to 230cc Steel Racing Cylinder Heads
  • Dart 2.02 to 2.08 x 1.6″ Stainless Steel Valves
  • Dart Hydraulic Roller Complete Valve Train Kit
  • Fel Pro Marine Hi-Performance Gasket Set
  • Manley 5/16″ x .105″ Wall Heavy Duty Push Rods
  • Comp Cams Long Slot Roller Tip Rockers (short valve covers)
  • AwesomeEngines® CNC Engraved Powder Coated V Covers
  • AwesomeEngines® Moroso Tig Welded Pick Up Oil Pump Kit
  • AwesomeEngines® Moroso Marine 7qt Oil Pan
  • Motown Marine Aluminum Intake with Bronze Inserts
  • MSD 8.5mm Plug Wires and NGK Plugs (see upgrades for distributor needed)
  • Holley or QFT 600 to 850cfm Marine Carburetors (see upgrades)
  • free 48 state freight (see stipulations below)

Available Upgrades

Dart Iron Eagle 180, 200, 215 and 230cc Steel Heads for 383-400-414 and 427ci Engines are Available at the Same Price
+ $  395.00
Dart Iron Eagle 227cc Fully CNC Ported Steel Heads for 427 and 454ci (525+hp on 427ci and 560+hp with 454ci Engines)
+ $1095.00
3.48, 3.75, 3.875 or 4.0″ 4340 Internally Balanced Steel Crank Upgrade for 350 to 427ci
+ $  495.00
454ci SBC Upgrade w/4.125″ Crank, 4.185″ Bore for the PBM World Raised Cam Race Block for Max Power, Torque and Cubic Inch
+ $1995.00
Comp Cams Max Hydraulic Roller Cam Package Including Beehive Springs, Tit Retainers for .550 to 600″ Lift Cam
+ $  495.00
Steffs 10qt. Hi-Performance Marine Oil Pan
+ $  595.00
T&D Sportsman Series Shaft Rocker System Installed
+ $  995.00
MSD Marine Billet Distributor with Proper Gear for Roller Cam
+ $  495.00
AwesomeEngines® Custom Complete Engine Twin Engine Evacuation Installed with all Fittings, Hoses and Air Cleaner to Valve Covers
+ $  695.00
AwesomeEngines® CNC Engraved Logo Powder Coated Valve Covers with Billet Oil Fill
+ $   195.00
All New Fast EZ EFI Unit Installed for the Perfect Mannered Marine Late Model Engine
+ $2495.00

Dyno Tested with Exxon Pump Gas • Vacuum Pump System • MSD Billet Distributor •HP Corrected to Sea Level

Free freight of $400 applies to this item shipped to a commercial address in the normal 48 states. Handling fees, insurance, residential, lift gate service, out of area charges, will apply for your area where you have this item shipped to. Total cost of these charges that exceed $400 will be known to you before we ship.

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