Jeep Headers - 71-79 Cherokee 304-401

The Jeep Headers for 71-79 Cherokee with 304-401 AMC V8 engines represent a straightforward bolt-on power upgrade that addresses one of the most common restriction points in classic fullsize Jeep and truck builds. Factory cast-iron manifolds choke airflow and trap exhaust heat around the engine bay, limiting both horsepower and reliability. Hedman's street-focused design replaces those restrictive units with a tuned primary tube configuration that scavenges exhaust more efficiently, helping engines breathe easier and deliver measurable gains in mid-range torque where daily drivers feel the difference most.

These headers feature 1.75-inch primary tubes that merge into a 3-inch collector, a proven sizing ratio for naturally aspirated V8 applications in this displacement range. The primary diameter keeps exhaust velocity high through the manifold, preventing low-rpm scavenging losses, while the 3-inch collector provides adequate volume for higher-rpm flow without excessive backpressure. Constructed from mandrel-bent steel with durable black paint finish, the headers arrive complete with all necessary gaskets and hardware for same-day installation. The pair weighs 25.85 lbs total and measures 16.8 x 8.8 x 39.5 inches, fitting within the engine bay constraints of first and second-generation Cherokee and fullsize Jeep platforms.

Mechanics and restorers working on 1971–1979 Cherokee models with 304, 360, or 401 cubic-inch AMC V8 engines will find these headers compatible with both stock and mildly modified builds. They integrate with existing exhaust systems via the standard collector flange and pair well with aftermarket mufflers or cat-back systems. Installation requires removing factory manifolds and bolting the headers directly to existing head ports—no welding, port matching, or extensive fabrication needed. These headers deliver the most noticeable improvement on trucks running stock or lightly tuned engines, where the reduction in backpressure and heat soak translates to better cold-start behavior, improved part-throttle response, and cooler underhood temperatures during extended trail or highway use.