Exhaust Header for 1955-1957 Chevy Bel Air, 1955-1978 & 1980-1982 Chevy Corvette 5.7L Small Block Chevy

Stainless Steel Headers for Your Small-Block Chevy Project

Built for compatible small-block Chevrolet V8 projects in select 1955–1957 Bel Air and One-Fifty models, 1956–1957 Two-Ten models, and 1955–1978 or 1980–1982 Corvettes, this mirror-polished stainless steel header pair merges four runners per bank into a single collector. Supplied gaskets, connecting pieces and mounting hardware support an engine-side exhaust refresh. Fitment follows the installed engine and chassis configuration, not an assumption that every listed year came with factory 5.7L power.

Best For

• Refreshing a deteriorated engine-side exhaust: replace a diagnosed damaged manifold or header assembly on a compatible small-block Chevrolet installation.
• Restoring the engine bay’s appearance: choose a mirror-polished stainless header pair when refreshing an otherwise compatible classic-car exhaust.
• Planning a 5.7L small-block swap: evaluate the header route alongside the installed heads, engine mounts, steering system and transmission controls before committing to the exhaust layout.
• Building a matched exhaust connection: use the paired collectors and supplied connector pieces as the starting point for a downstream system sized and routed for the vehicle.

Tubular Header Design & Performance

Each header routes one bank’s exhaust through four primary tubes into a shared collector. Compared with a compact cast-manifold layout, this provides a different runner and collector arrangement; the result depends on the engine, heads, camshaft, calibration and the rest of the exhaust.

No fixed horsepower increase, particular torque curve or elimination of all exhaust restriction is claimed. Exhaust sound also depends on the downstream pipes, mufflers and engine configuration.

Specs

What’s Included

Plan the vehicle-side connection and retained hardware using the checks in Installation.

Classic Chevrolet Applications

A chassis application is not a claim that every original engine, cylinder head, steering system or transmission combination will accept this header. The relevant configuration is what is installed in your car now. Review Before You Order & Install for the mounting and clearance checks.

Before You Order & Install

• Year and engine scope: use only the applications in Fitment. The 1979 Corvette and 1955 Two-Ten are outside this application table. A small-block Chevrolet application does not establish fitment for an LS-family or big-block engine.
• Cylinder heads and plugs: compare the exhaust port shape, flange, fastener locations and spark-plug access with the installed heads. Aftermarket heads and plug angles can change the available clearance.
• Steering, frame and engine position: check the steering box and shaft, frame, engine mounts and actual engine position. An upgraded steering box or altered mounts can change the header route even on a matching model year.
• Clutch, starter and nearby parts: confirm manual-clutch linkage clearance where fitted, plus access around the starter, oil filter, wiring and hoses. Do not force the steering or other safety-critical parts into a different position to clear the header.
• Downstream exhaust: compare the collector locations, connector pieces and mating pipe route. Establish any fabrication, adapters or additional parts before installation; the application table is not a guarantee of a universal no-modification fit.
• Sealing and equipment: inspect head threads, sealing surfaces and retained fasteners. Verify any sensors or other equipment required by your particular engine and exhaust setup; connector pieces do not establish sensor-port compatibility.
• Permitted use: confirm the requirements applicable to the vehicle, engine and intended use. Vehicle age alone is not proof of unrestricted exhaust use; no emissions certification or road-use approval is claimed here.

Will the Engine Need Tuning?

For a carbureted engine without electronic engine management, there is no ECU calibration to change, but a qualified technician should assess mixture and ignition settings after the exhaust change. For an electronically managed or EFI-swapped engine, calibration needs depend on the complete combination, sensor operation and existing modifications. Diagnose mechanical leaks and clearance or sensor problems first; tuning is not a substitute for correct installation.

Installation Overview

This is a general installation overview for a classic-car exhaust project, not a model-specific installation manual. Follow the service information for the actual engine and chassis, and complete the fitment and tuning checks above. Professional installation is recommended.

1. Identify the installed combination. Confirm the engine, cylinder heads, steering system and transmission controls. Lay out both headers, gaskets, connector pieces and hardware, and complete the clearance checks above.
2. Cool and safely support the vehicle. Let the engine and exhaust cool fully. Follow the vehicle’s service and lifting procedures, using a suitable lift or rated stands rather than relying on a jack alone.
3. Remove and support the existing exhaust. Follow the service procedure for the installed engine. Protect nearby wiring and components, support the downstream pipes and remove the relevant manifold or header connections without loading the remaining system.
4. Prepare the mounting faces. Inspect the head sealing surfaces, threads and downstream joints. Remove old gasket material carefully, replace damaged hardware and select the correct seals for the connections.
5. Trial-fit both engine banks. Position each header with fasteners started by hand. Check the steering, frame, clutch linkage, starter and plug access, then align the collector connectors with the downstream pipework before final assembly.
6. Secure and restore the system. Complete the approved downstream connection and tighten the header and collector joints using the specifications and sequence for the installed heads and hardware. Restore all required equipment and keep wiring clear of hot or moving parts.
7. Check sealing and engine operation. Run the engine in a well-ventilated area and inspect for exhaust leaks, contact and abnormal running. After cooling, recheck the connections and follow any specified fastener inspection procedure; assess mixture, ignition or calibration as appropriate.

Frequently Asked Questions

Does a listed model year mean my car originally had a 5.7L engine?

No. These vehicles span different factory engines and later swaps. Identify the engine and heads installed now; the 5.7L project context is not a statement that every year in the application table left the factory with that displacement.

Will these headers fit any small-block Chevy, LS or big-block engine?

This header pair is for a compatible small-block Chevrolet V8 installation with matching head flanges, ports and chassis clearance. This header pair is listed for compatible small-block Chevrolet V8 installations, rather than LS-family or big-block applications.

Will an upgraded steering box or manual clutch linkage clear?

Header clearance around an upgraded steering box or manual clutch linkage depends on the installed engine and chassis combination. Steering-box size, engine position and clutch-linkage layout can change the clearance. Match the header route to those parts before completing the installation.

Are the supplied short connectors oxygen-sensor bungs?

The supplied short connectors join the header collectors to the downstream exhaust. Match the sensor provisions to the requirements of your installed engine and exhaust system.

Can I connect these to any existing exhaust without fabrication?

No. Collector position, flange interface and pipe routing must match. The connectors help form the joint, but the retained exhaust or a swap-specific layout may require additional parts or fabrication.

Are 1979 Corvettes or 1955 Two-Tens included?

No. The Corvette application covers 1955–1978 and 1980–1982; the Two-Ten application covers 1956–1957. The application list excludes 1979 Corvettes and 1955 Two-Tens.

Does a carbureted engine need an ECU tune after installation?

An engine without an ECU has no ECU calibration to change. Its mixture and ignition still need an appropriate assessment. An EFI or electronically managed swap needs a separate calibration assessment based on the complete setup.

Warranty & Customer Support

A one-year limited warranty from delivery covers qualifying material and workmanship defects under normal use for the original purchaser. Proof of purchase is required. Improper installation, alteration and modification are excluded, as are installation and removal labor costs.

Returns within 30 days are subject to product condition and the applicable shipping terms. Read the Warranty & Return Policy for eligibility and claim procedures.

For fitment questions or an order issue, email service@spelabautoparts.com or call +1 888 301 8666. Hours: Monday–Friday, 9:00 AM–6:00 PM EDT. Share your vehicle year, model, engine, chosen style and relevant photos; include the order number for an existing purchase.