Long Tube Headers for Corvette C5 (1997-2004) 5.7L Engine

High-Flow Exhaust Scavenging for the LS1: C5 Corvette Long Tube Headers

Who It’s For: Engineered for 1997-2004 Chevrolet Corvette owners running the iconic LS1 powerplant who are tired of the stock exhaust choking their high-end performance.

The Symptom: The factory exhaust manifolds on the LS1 are designed for mass production and engine bay silence, not raw efficiency. These restrictive, cast-iron or heavy stamped units create massive backpressure by forcing exhaust pulses to collide in a cramped space. This turbulence prevents the engine from breathing during high-RPM pulls, leaving significant horsepower and torque on the table when you’re trying to shave time off your 0-60 or quarter-mile runs.

The Engineering Fix: This system replaces those restrictive manifolds with a long-tube design featuring 1-7/8" primary runners and 3" collectors. By using computerized mandrel-bending, we ensure the internal diameter remains constant, preventing the velocity drops common in crush-bent tubing. The increased length of the primaries creates a scavenging effect, where the high-velocity exit of one exhaust pulse actually creates a vacuum that pulls the next pulse out of the combustion chamber, significantly improving volumetric efficiency.

Why Mechanics Choose This Kit

• Optimized Scavenging: The 1-7/8" primary diameter is the "sweet spot" for the 5.7L LS1, providing enough volume for top-end airflow without sacrificing the low-end air velocity needed for torque.
• The LS1 Growl: Swapping to T304 stainless steel removes the muffled, tinny sound of stock manifolds and replaces it with a crisp, aggressive induction and exhaust note that defines the C5 platform.
• Superior Construction: Featuring TIG-welded CNC machined flanges, these headers are built to withstand the extreme thermal cycles of performance driving without warping or leaking.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• 1997 Chevrolet Corvette 5.7L V8 LS1
• 1998 Chevrolet Corvette 5.7L V8 LS1
• 1999 Chevrolet Corvette 5.7L V8 LS1
• 2000 Chevrolet Corvette 5.7L V8 LS1
• 2001 Chevrolet Corvette 5.7L V8 LS1
• 2002 Chevrolet Corvette 5.7L V8 LS1
• 2003 Chevrolet Corvette 5.7L V8 LS1
• 2004 Chevrolet Corvette 5.7L V8 LS1

Technical Notes:

Inlet: 1.875", Outlet: 3.00", Extension Pipe Inlet: 3.00", Extension Pipe Outlet: 2.25", Ball Flange Design

The Performance Promise

Buy with confidence. This kit is designed for enthusiasts who demand better flow and a more responsive throttle. While this is a direct bolt-on for the headers themselves, professional installation is highly recommended to ensure proper clearance and a leak-free seal on the 3" ball flange connections. Backed by real automotive experts and fast shipping.