Competition Full-Length Headers 1 5/8" Primary Tubes 2.5" Collector

The Hooker Headers 2452-2HKR Competition Headers are engineered from durable 16-gauge stainless steel with a vibratory polished finish, offering a full-length design to optimize exhaust scavenging. Each header boasts 1.625-inch primary tubes that transition into a 2.5-inch collector, designed to improve exhaust flow and potentially increase engine performance. The package includes premium exhaust gaskets and all necessary mounting hardware for a complete installation. Installation of these headers requires specific considerations. They are compatible with stock floor shift linkage only; any intent to use a column shift operation will necessitate a specialized linkage/cable shifter assembly that accounts for the stock lower frame shift linkage in the collector area. Additionally, due to potential incompatibility with stock spark plug wire heat shields, aftermarket spark plug wires with 45-degree boots are recommended. The source material also notes that these headers will not fit vehicles with angle plug heads or raised port heads. For optimal fitment, the vehicle must be raised a minimum of 36 inches, and the battery cable and stock exhaust manifold should be disconnected prior to installation. These headers are designed for pre-1975 vehicles and are compatible with specific Chevrolet and GMC applications, including various C10, C20, C30 trucks, Blazers, Suburbans, and Jimmys from the mid-1960s through the mid-1970s, primarily those with small-block V8 engines (4.6L to 6.6L) and rear-wheel drive configurations. Always consult the detailed fitment chart to ensure compatibility with your specific vehicle year, make, model, engine, and drivetrain.