71-86 Sb Chevy Passenger

The Hedman 71-86 SB Chevy Passenger side headers represent a proven solution for small-block Chevrolet engine builders seeking improved exhaust scavenging and reliable street performance. Designed specifically for GM A-Body and B-Body platforms spanning 1964–1994, these headers address the factory exhaust bottleneck that restricts both horsepower and throttle response in classic and second-generation muscle cars. Whether restoring a 1970s Chevelle, Camaro, or Nova, or upgrading a daily-driven hot rod, quality headers unlock measurable power gains while restoring the authentic V8 character that enthusiasts expect.

These street-spec headers feature 1.625-inch primary tubes that flow into a 3-inch collector, engineered to balance scavenging efficiency with real-world drivability at part-throttle and cruise. The steel construction is finished in durable black paint to resist rust and integrate cleanly with engine bays. Unlike universal headers, the passenger-side configuration is precision-fit to the vehicle's original mounting points, eliminating fitment guesswork. Gaskets and mounting hardware are included, reducing installation complexity and ensuring a complete exhaust seal from header flange to collector outlet. The 28.5-pound weight reflects solid steel construction rather than thin-wall alternatives prone to cracking under load cycling.

Mechanics and DIY builders choose Hedman headers for their longevity and value in street applications where reliability matters as much as performance. Installation requires disconnecting the factory manifold, clearing header clearance points (typically the steering linkage and brake booster on driver-side installations), and bolting the headers to the cylinder head. The 19 x 10 x 39-inch envelope allows fitment verification before final commitment. Pair these headers with a quality exhaust system—2.5-inch or larger mandrel-bent tubing—to unlock the full scavenging benefit. Compatible with carbureted and fuel-injected small-block Chevys, these headers serve as the foundation for any street or mild-performance build targeting 300–400 horsepower.