SKU: SCH1152
MPN: 1152
The Schoenfeld SBC Modified Header 1-3/4 Ellis (Part No. 1152) is a purpose-built exhaust manifold engineered specifically for IMCA Modified race competition. This header pair features 1.75-inch primary tubes that converge into a high-flow collector, designed to extract maximum performance from small-block Chevy engines in the Modified racing class. Schoenfeld headers are recognized in racing circles for precision manufacturing and dyno-proven flow characteristics that translate to measurable horsepower gains on the track.
The 1-3/4-inch primary diameter is the IMCA Modified standard, optimized for the RPM range and displacement parameters of competition engines in that class. Headers of this specification improve exhaust scavenging efficiency and reduce backpressure at the cylinder head, allowing the engine to breathe more freely during the critical power stroke. The Ellis design incorporates proven collector geometry that encourages exhaust pulse velocity without creating turbulence-inducing bends. At 28.6 lbs, this header set adds minimal weight while delivering the structural rigidity required to withstand the thermal and mechanical stresses of race duty.
This header is the choice for IMCA Modified competitors and bracket racers who build small-block Chevy platforms for circle-track racing, drag racing, and oval-track competition. Builders selecting a Modified header prioritize flow characteristics and rule compliance—both delivered by the SBC 1-3/4 Ellis. Installation requires proper fitment verification for your specific chassis and engine bay configuration, as headers interact with engine mounts, steering components, and existing exhaust systems. Pair this with a compatible collector and exhaust system to realize the full performance potential.
Schoenfeld has been manufacturing race-proven headers for decades. The SBC Modified Header 1-3/4 Ellis represents the brand's commitment to competitive racing standards and the specific needs of the Modified racing community, where header selection directly impacts both horsepower output and rule-book compliance.
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