SBF IMCA Headers 1-3/4in - 1-7/8in

The SBF IMCA Headers 1-3/4in - 1-7/8in by Schoenfeld represent purpose-built exhaust manifold technology designed for serious small-block Ford racing and high-performance street applications. These headers are engineered specifically for IMCA (International Motor Contest Association) competition and bracket racing where every fraction of a horsepower and millisecond of spool time matters. Whether you're building a competition cruiser, drag racer, or weekend warrior machine, these headers deliver the scavenging efficiency and thermal management that separates winning builds from the rest.

Schoenfeld's engineering approach focuses on optimized primary tube diameter ranging from 1-3/4 inches to 1-7/8 inches, a sizing strategy that balances low-end torque response with peak RPM power delivery across the typical small-block Ford powerband. The stepped tube design minimizes turbulence and maximizes exhaust gas velocity, promoting cleaner scavenging and reducing backpressure at high RPM where it matters most. The robust construction and 28.82-pound assembly ensures durability under sustained racing loads, thermal stress, and the vibration cycles of prolonged track use without warping or joint failure.

These headers are ideal for small-block Ford platforms running IMCA-legal configurations, making them the go-to choice for dirt-track racers, asphalt bracket racers, and engine builders targeting maximum bolt-on performance gains without extensive cylinder head porting. Installation pairs well with a quality exhaust system and aftermarket intake manifold to unlock the full potential of your SBF combination. The compact footprint (20.65 x 16 x 28.4 inches) ensures compatibility with both traditional and tight engine bay applications common in vintage and modern competition vehicles. Verify clearances with your specific frame and suspension setup before purchase to ensure hassle-free installation.