Chevy 5.7L 350 Vortec V8 Engine – Complete Remanufactured Long Block

5.7 vortec engine buyers looking for a remanufactured Chevy 350 replacement can get the proven Gen I small-block architecture in a complete long-block configuration. This 5.7L 350 Vortec V8 is based on the Chevrolet L31 Vortec platform and is designed for truck, SUV, muscle-car, hot-rod, and project-vehicle applications where a dependable replacement small-block is needed.

The L31 Vortec 350 combines cast-iron construction, high-flow Vortec cylinder heads, and a hydraulic roller camshaft. Its 5.7-liter displacement and 4.000-inch bore with a 3.480-inch stroke provide the familiar 350ci configuration while offering the updated Vortec cylinder-head and valvetrain design associated with this generation of the Chevrolet small-block.

This engine is completely remanufactured, precision-machined, and pressure-tested to verify the finished assembly and help ensure the specified components and tolerances are ready for installation.

5.7L 350 Vortec Engine Specifications

Remanufactured Chevy 350 Vortec Long Block

This 350 Vortec long block is built around the core components of the L31 engine platform, including the block, cylinder heads, crankshaft, pistons, and camshaft. The Vortec cylinder-head design provides the high-flow configuration associated with the L31, while the hydraulic roller camshaft provides the updated valvetrain configuration of this engine family.

The listed engine specification is 255 HP at 4,600 RPM and 330 lb-ft of torque at 2,800 RPM.

Package Includes

The remanufactured 5.7L 350 Vortec long-block package includes:

• Remanufactured 5.7L 350 Vortec long-block assembly
• Engine block
• Vortec cylinder heads
• Crankshaft
• Pistons
• Hydraulic roller camshaft
• Timing chain cover
• Valve covers
• Oil pan
• Oil pump assembly
• Intake manifold gaskets
• Necessary core plugs

5.7L Vortec Applications

The L31 350 Vortec platform was used in Chevrolet and GMC trucks and SUVs, including applications from the late 1990s and early 2000s. The engine is also used in replacement and performance projects where the 5.7L Gen I small-block architecture is appropriate.

For an original-equipment replacement, verify the exact vehicle, engine configuration, and required components before ordering. A 5.7L displacement alone does not establish complete interchangeability between different Chevrolet small-block applications.

For custom installations, confirm the requirements for the intake and fuel system, accessory drive, engine mounts, wiring and controls, exhaust, cooling system, oil pan, and transmission interface before installation.

Why Choose a Remanufactured 350 Vortec?

A remanufactured 5.7L 350 long block provides the core engine assembly without requiring the buyer to source an entirely different engine platform. It is particularly relevant for projects built around the Chevy 350 Vortec architecture where retaining compatible external components is desirable.

The L31 configuration combines the familiar 350ci small-block layout with Vortec cylinder heads and hydraulic roller-cam valvetrain technology, making it a distinct option from earlier carbureted and TBI versions of the Chevrolet 350.

Before Ordering

Because GM produced multiple 5.7L small-block configurations, confirm your original engine and application before purchasing. Pay particular attention to:

• Engine identification and configuration
• Vehicle year, make, and model
• Intake manifold compatibility
• Fuel-system configuration
• Accessory-drive requirements
• Engine-mount configuration
• Oil-pan requirements
• Exhaust compatibility
• Wiring and engine-management requirements
• Transmission and flexplate/flywheel compatibility

Matching these details before purchase can help ensure the 5.7L Vortec engine is appropriate for the intended installation.