LS Swap Exhaust Header for G-Body Vehicles
When retrofitting an LS powerplant into a classic G-Body chassis you need an exhaust header that threads through tight spaces and manages underhood heat while sealing perfectly at the head flange. This mid-length ceramic header hugs frame rails without intrusion and uses a three eighths inch flange to deliver a leak free seal throughout varied tune conditions. Built with precision TIG welds and a reflective silver coating the 1.875 inch primaries safeguard wiring and coolant lines, simplify 4L60E and 4L80E installations, and preserve consistent exhaust flow for spirited driving. Installation becomes straightforward thanks to direct bolt on fitment for 1978 to 1988 G-Body applications and common GM transmissions.
Mid-length Header Design for Chassis Clearance
The 1.875 inch mid-length header routing is engineered to follow the contours of a classic G-Body frame without intruding on steering linkages or crossmembers. By keeping tube bends minimal and precisely aligned, this design avoids interference with wiring harnesses and coolant lines under the hood. Installers benefit from a straightforward assembly that preserves factory packaging and maintains proper line-of-sight for service access. This geometry also reduces the need for custom fabrication or heat shields around sensitive components. Overall, the header slips into place with consistent tube angles that simplify alignment on both driver and passenger sides.
Precision TIG Welding for Consistent Sealing
Every primary tube is joined to the flange plate using tungsten inert gas welding to create exceptionally consistent bead profiles. This focused process prevents warpage of both the flange and tubing, ensuring the mating surface remains perfectly flat against LS heads. A flat interface coupled with a 3/8-inch thick flange yields an airtight seal that resists leaks even under repeated thermal cycling. Technicians rely on these robust joints to retain shape and alignment through thousands of heat and cool events. Reduced distortion also cuts down on installation adjustments and long-term maintenance checks.
Ceramic Coating Shields Against Heat and Corrosion
The silver ceramic coating on each header tube reflects radiant heat back into the exhaust stream, lowering underhood temperatures by several hundred degrees. This reflective barrier helps protect nearby electrical lines and coolant hoses from heat soak, preserving component life and tuning stability. In addition, the coating forms a resilient shield against moisture, road chemicals and oxidation, keeping bare steel surfaces sealed against corrosion. Over time, this finish remains bonded to the tubing without flaking or peeling. As a result, engine bay sensors stay cleaner and tuning remains more consistent in varied driving conditions.
Optimized Primaries for Enhanced Exhaust Pulse Tuning
Each header leg measures 1.875 inches in diameter to achieve the ideal balance between low rpm torque and high rpm power. At this dimension, exhaust pulses maintain velocity to create a scavenging effect that draws in fresh air-fuel mixture for improved combustion efficiency. Smooth internal weld beads further prevent backpressure spikes that can sap horsepower and throttle response. Drivers notice quicker throttle transitions and a broader torque curve that make everyday operation more engaging. This precise tube sizing ensures consistent flow dynamics without compromising drivability.
Engineered for a precise fit and lasting performance.