Specifications:

• Block: Cast Iron, 4 bolt intermediate main.
• Crankshaft: Forged 4340 Steel, Externally Balanced, 1 piece rear seal.
• Connecting Rods: 5.7" Forged, powdered metal, 3/8" studs.
• Bore/Stroke: 4.005" x 3.80"
• Pistons: Hypereutectic, coated, 244-T5 aluminum alloy with centered pin bore.
• Rings: Plasma Moly
• 8" External Harmonic balancer
• 12-3/4" automatic flexplate
• 4 Quart oil pan with windage tray - 5 quart capacity with Fram 410-PH5 oil filter
• Composite (plastic) Front timing cover
• Engine oil dipstick and tube - passenger side location
• Brass freeze plugs
• Firing Order: 1-8-4-3-6-5-7-2. Note: Does not include a camshaft, lifters, timing chain, or cam sprocket.

  GM Warranty

The Chevy Performance 383ci Short Block is a proven foundation for builders who want increased displacement, strong torque output, and factory-backed reliability in a small block Chevy platform. Designed for enthusiasts assembling a custom top-end combination, this 383 stroker short block provides the bottom-end strength and precision machining required for dependable street or strip performance. Whether you’re upgrading a tired 350 or building a fresh small block crate engine combination, the 383ci configuration delivers the cubic inches and torque capacity serious performance projects demand.

By increasing stroke over traditional small block configurations, the 383ci platform enhances low- and mid-range power—ideal for heavier vehicles, aggressive gearing, and responsive throttle performance. As a short block assembly, it offers flexibility for builders to select their preferred cylinder heads, intake manifold, and valvetrain components to tailor airflow and horsepower to specific goals.

Performance Benefits & Key Features

The Chevy Performance 383ci Short Block is engineered with a durable cast iron block and a precision-balanced rotating assembly designed to handle elevated RPM and load demands. Performance enthusiasts value specifications such as increased displacement, reinforced bottom-end construction, and compatibility with a wide range of aftermarket cylinder heads and induction systems.

The 383 stroker design enhances torque across the RPM band, making it a popular choice for street performance builds and vehicles that benefit from strong off-idle acceleration. Builders can configure the top end to support moderate horsepower levels for daily drivers or more aggressive output for drag racing applications. This versatility allows the short block to serve as the backbone of a high-performance crate engine build tailored to individual needs.

Because the rotating assembly is professionally machined and assembled, buyers gain confidence in durability and long-term reliability—especially when compared to piecing together used or mismatched components. It’s a smart solution for enthusiasts who want OEM-level engineering precision combined with aftermarket flexibility.

Fitment, Compatibility & Applications

The 383ci short block is designed for Chevrolet small block compatibility, making it ideal for classic GM platforms such as Camaro, Chevelle, Nova, El Camino, and C10 trucks. It’s also a strong candidate for street rods, restomod builds, and performance trucks requiring additional displacement without major fitment changes.

Its compact small block dimensions allow straightforward installation in vehicles originally equipped with SBC engines. Builders can customize induction, ignition, and exhaust systems to match street performance, light towing, or weekend racing applications.

When you’re ready to build serious small block power from the ground up, explore the Chevy Performance 383ci Short Block options at JEGS and create a performance combination tailored to your vision.