Ceramic Coated LS Mid-Length Headers for 1968-1972 A-Body Chevelle GTO Cutlass Skylark
Swapping an LS powerplant into a 1968 to 1972 A body chassis often leads to clearance conflicts that stock manifolds cannot resolve. These mid-length headers use a precision-fit flange pattern matched to popular mount kits for Chevelle, GTO, Cutlass and Skylark applications, cutting installation time and removing the need for custom shims. With 1 7/8 inch primary tubes mandrel bent for smooth exhaust flow and a silver ceramic coat that reflects radiant heat, they lower underhood temperatures and stand up to repeated thermal cycles. The result is consistent scavenging, a leak free seal and reliable throttle response from idle to redline.
Mandrel Bent 1.875 Inch Tubes Optimize Scavenging Efficiency
These headers feature primary tubes bent with a constant radius profile and a 1.875 inch bore that extends from the flange to the collector without interruptions. This smooth passage lowers turbulence and reduces backpressure by guiding exhaust gases in a uniform flow stream. Improved scavenging allows individual cylinders to purge spent gases more completely, translating into stronger throttle response and a fuller torque curve throughout the midrange. By relying on the inherent dynamic of exhaust pulses rather than altering cam timing or fuel mapping, the design unlocks usable power gains across the rev range without complex tuning adjustments.
Ceramic Coated Finish Controls Radiant Heat
The bright silver ceramic layer acts as a thermal barrier that reflects radiant heat back into the exhaust stream while shielding adjacent engine components. This coating slows the transfer of heat to nearby intake runners and electrical harnesses, minimizing performance robbing heat soak under extended load. Its ceramic composition also resists corrosion and abrasion through repeated thermal cycles, preserving surface integrity over time. By maintaining cooler underhood temperatures, the headers contribute to more consistent air density and throttle response during spirited driving sessions.
Thick Steel Flange Construction Maintains Seal Integrity
Each header flange is fabricated from steel and plate gauged at 0.375 inch thick to resist distortion under high temperature and torque. The extra material stiffness ensures even gasket compression across the full flange surface, preventing exhaust leaks that can sap power or raise cabin noise levels. Durable flange rigidity aids in aligning the tubes to downstream components, promoting a continuous exhaust path without binding. The net result is a dependable seal that holds under vibration and repeated thermal expansion cycles for reliable long term performance.
Precision Flange Pattern Simplifies A Body Header Fitment
Flanges are machined to match the bolt pattern found on popular A body chassis adapter kits for Chevelle, GTO, Cutlass and Skylark vehicles, eliminating the need for custom shims or excessive adjustments. This exact alignment cuts installation time by avoiding trial and error when mated to common swap engine mount fixtures. Proper fitment also prevents interference with frame rails, suspension linkages and steering components, reducing reroutes or modifications. With a tight seal from the outset, installers can achieve a leak free interface that holds steady under engine vibration and thermal cycling.
Manufactured to deliver reliable performance and precise fitment for your LS swap project.