*Shown With Optional Upgrades

632CI BBC 1000HP Airboat Performance Engine

Estimated Cost $35,695.00

Fuel Injected 632CI BBC Marine Engine 1000HP

Big block Chevy 632 stroker with 1000HP and 800TQ performance aluminum head engine combination was designed for maximum performance on pump gas.Typical power range is 950HP and 876TQ @ 5600 rpm. All engines can be custom painted to match your airboat at your request.


  • Custom Built 632CI 1000HP BBC Marine Crate Engine:
  • Fully Machined Tall-Deck Sportsman Bowtie Block
  • Forged Steel Stroker Crankshaft
  • Forged H-Beam Connecting Rods
  • Performance Forged Pistons
  • Performance rod and main bearing (Clevite, King or Federal Mogul)
  • Hand Filed Performance Rings
  • Rotating Assembly Is Balanced (Internal)
  • Custom Ground Hydraulic Roller Camshaft
  • Hydraulic roller lifters
  • Lifter Clips And Spider Tray
  • Three Piece Roller Timing Set
  • Performance Aluminum Cylinder Heads RS-X Design
  • High Performance Valve Springs And Retainers
  • Head Studs
  • Chrome Moly Push Rods
  • Performance Roller Shaft Mounted Rocker Arms
  • High Volume Oil Pump And Screen
  • Oil Pan
  • Dip Stick And Tube
  • Aluminum Timing Cover
  • Performance Balancer
  • Performance Gaskets
  • Multi-Port EFI Intake
  • Aluminum Valve Covers (632 Logo)
  • Universal 4-Barrel 4500 Flange Throttle Body
  • Holley Terminator X ECUHolley C.O.P Wiring Harness
  • Holley Tuning Cable
  • Fuel Injectors Matched To Application
  • Billet Fuel Rail
  • MAP Sensor
  • Throttle Position Sensor
  • Idle Air Control
  • Coolant Temp Sensor
  • Wide band O2 Sensor
  • Holley Dual Sync Distributor
  • LS Style Coils Mounted To Valley Cover
  • Spark Plugs
  • 8MM Ignition Wires
  • Taylor Wire Looms
  • Thermostat
  • Thermostat Housing
  • Engine will be Dyno tested and tuned for optimum performance
  • No Warranty!

Additional Items:

  • Water Pump Pulley
  • Alternator Pulley
  • Alternator Bracket
  • 140 Amp One Wire Alternator
  • A Serpentine Belt To Match Application

Which Style Engine Should I Use? An Aircraft Engine Or An Automotive Style Engine?

While Aircraft engines produce a Lot of low RPM torque they are very expensive to buy and maintain. An automotive engine when designed correctly can achieve the same torque and horsepower at a much more reasonable cost. Maintenance parts can be purchased at most automotive supply stores and the cost is considerably cheaper.

We have developed several extremely durable engine combinations that will meet almost everyones needs. These engine combinations feature forged pistons, roller camshafts, specialty valve train components, additional oil capacity, Etc. That have been tested time and time again to ensure there durability will stand up to the job. Most airboat engine manufactures are still using old technology that just simply won’t last very long to keep cost down, When in the long run will cost you more money. The engine packages that are listed come standard with fuel injection. With todays fuel containing so many additives and ethanol, carburetors just don’t last very long. For those of you that think fuel injection is not right for your application, We can downgrade the engine package to come with a carburetor.

Proformance Unlimited airboat engines are currently used by law enforcement, airboat charter services, and even saw service in specialty categories like the winter olympics.