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Chevrolet LS3 Crate Motor Gen-IV Small-Block V8 430 HP

  • Engine Type: LS-Series Gen-IV Small-Block V-8
  • Displacement: 6.2 liters (376 cubic inches)
  • Bore x Stroke: 4.065 x 3.622 inches (103.25 x 92 mm)
  • Compression Ratio: 10.7:1
  • Horsepower Rating: 426-436 hp
  • Torque Rating: 420-428 ft/lbs


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About LS3 Crate Motor Gen-IV Small-Block V8 430 HP

The LS3 crate motor represents the pinnacle of high-performance engineering from Chevrolet. Known for its versatility and power, this Gen-IV small-block V-8 engine delivers exceptional performance for a variety of automotive applications. Whether you’re upgrading a classic muscle car, restoring a vintage vehicle, or boosting the power of your truck, the LS3 crate motor is engineered to meet your needs with precision and power.

Performance Features for LS3 Crate Motor

The LS3 crate motor excels with a maximum horsepower of 426-436 hp and peak torque of 420-428 ft/lbs. Its high-revving capabilities and advanced engineered components, including an aggressive camshaft and efficient valve train, ensure superior performance at high RPMs. The LS3 crate motor’s robust design and powerful output make it an excellent choice for both racing and everyday driving.


This LS3 crate motor is perfect for a range of vehicles, particularly muscle cars and trucks. It is the standard engine for the fifth-generation Camaro SS and the C6 Corvette. Its versatility and ease of integration make the LS3 crate motor a favored choice for automotive enthusiasts.

Components Included

The LS3 crate motor package comes complete and ready for installation, including:

  • Camaro F-body oil pan
  • Intake manifold assembly with injectors
  • Ignition system
  • Standard front-end accessory drive kit
  • Detailed installation instructions and necessary hardware

Installation and Maintenance

Installing the LS3 crate motor is straightforward with the provided comprehensive instructions. To ensure the longevity and optimal performance of your LS3 crate motor, follow the recommended maintenance schedule which includes regular oil changes, coolant checks, and periodic inspection of components. In case of any installation issues, the detailed troubleshooting guide will be highly beneficial.

Performance Upgrades and Modifications

Boost the capabilities of your LS3 crate motor with potential upgrades like aggressive camshafts and custom tuning. These modifications can enhance its performance further while maintaining the reliability that Chevrolet engines are famous for. Note that modifications might affect warranty terms.

Comparison with Other Engines

When comparing the LS3 crate motor to other crate engines like the LS376/525, it’s evident that the LS3 balances cost and performance effectively. While the LS376/525 offers more horsepower, the LS3 retains a competitive edge with its robustness and cost-efficiency.

For more information on the LS3 crate motor, download official documentation and manuals from Chevrolet’s website or join forums and communities dedicated to LS-series enthusiasts. Learn from detailed articles and blog posts about performance tuning and maintenance tips.


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Chevrolet LS3 Crate Motor Gen-IV Small-Block V8 430 HP
You're viewing: Chevrolet LS3 Crate Motor Gen-IV Small-Block V8 430 HP $6,195.00
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