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LS Marine Engines

Alpha LS Marine Engines are assembled in house by professional engine builders. After years of real world research and development Alpha Motorsports has come up with specifications and parts combinations that provide powerful and reliable engine packages.

Our marine application LS engines can be used in airboats, mudboats, or retrofitting your bow rider or speed boat!

CBM MOTORSPORTS LS3/L92 HEAT EXCHANGER/INTERCOO...

CBM MOTORSPORTS LS3/L92 HEAT EXCHANGER/INTERCOOLER INTAKE MANIFOLD KIT Product Description: This...

CBM MOTORSPORTS LS3/L92 HEAT EXCHANGER/INTERCOOLER INTAKE MANIFOLD KIT Product Description: This intake manifold will you allow to run an air to water heat exchanger/intercooler on your LS based engine with LS3/L92 style cylinder heads. It has a universal 4150 style flange that will accept a throttle body or elbow to be bolted to it. A water to air intercooler setup is similar in principle to a traditional air to air setup, except that there is water passing through the core of the intercool...

$2,550.00 $2,599.99

Alpha SC Marine 430

ALPHA MOTORSPORTS SC MARINE 430 Product Description: The Alpha SC MARINE 430 is a 7.00 liter sup...

ALPHA MOTORSPORTS SC MARINE 430 Product Description: The Alpha SC MARINE 430 is a 7.00 liter supercharged LS3, it puts out 750+ hp @ 6800 RPM's and 725 ft-lbs of torque with a compression ratio of 10:0.1. This monster features Trick Flow CNC ported cylinder heads along with a forged lower end - fully balanced and blue printed. This engine offers big hp yet is dependable and durable. Custom options are also available. All Alpha Motorsports Marine engines and accessories are not marinized. BAS...

$18,500.00 $24,900.00

Alpha Marine LS3

ALPHA MOTORSPORTS MARINE LS3 Product Description: The Alpha Marine LS3 is a 6.8 liter naturally ...

ALPHA MOTORSPORTS MARINE LS3 Product Description: The Alpha Marine LS3 is a 6.8 liter naturally aspirated LS3, it puts out 575+ hp @ 6800 RPM's and 525 ft-lbs of torque with a compression ratio of 11:0.1. The engine features Trick Flow CNC ported heads along with a forged lower end - fully balanced and blue printed. This engine is dependable and durable. Custom options are also available.  All Alpha Motorsports Marine engines and accessories are not marinized. BASE PACKAGE: GM Block. Comput...

$15,500.00 $15,900.00