LS364/450HP Crate Engine - Gen III 6.0L 24X Long Block for Early LS Swaps

Short Specs:

• Part Number: Chevrolet Performance 19355368

• Displacement: 6.0L (364 cu in) Gen III 24X

• Power Output: 450 HP / 450 lb-ft Torque (with OE accessories)

• Architecture: Iron Block (LQ4/LQ9) with LS3 Rectangular Port Heads

• Compatibility: Plug-and-Play for 1998-2002 F-body, C5 Corvette, Early Trucks

Detailed Description:

The Chevrolet Performance LS364/450 Long Block is a budget-conscious, high-value hybrid engineered specifically for an easy, powerful upgrade in early LS-powered vehicles. It combines a rugged, cost-effective iron 6.0L block with the high-flow efficiency of factory LS3 rectangular port aluminum cylinder heads and the proven LS6 hot cam. This unique fusion creates a robust 450-horsepower engine with a massive, flat torque curve, offering a significant performance leap over original 5.3L or 5.7L engines.

Its key advantage is seamless, plug-and-play compatibility. Built with the early 24X crank and 1X cam sensor configuration, it is designed for a straightforward retrofit into 1998-2002 F-bodies, C5 Corvettes, and early GM trucks/SUVs without complex ECU or wiring changes. Supplied as a long block without accessories, it allows builders to reuse their original vehicle's intake, front drive, and ignition components or choose custom parts. The LS364/450 is the ultimate turnkey core for a powerful, reliable, and economical engine swap into the foundational chassis of the LS era.