When it comes to upgrading your vehicle's exhaust system, choosing between long tube and shorty headers is a crucial decision. This article provides installation tips for both long tube and shorty headers from two popular manufacturers: Edelbrock and Hedman. Understanding the differences and following best practices ensures a successful upgrade that maximizes performance and longevity.

Understanding Headers

Headers replace restrictive factory exhaust manifolds with individual tubes for each cylinder. By lengthening and smoothing the exhaust path, they improve scavenging—the process of pulling exhaust gases out of the combustion chamber to allow fresh air-fuel mixture in. This directly translates to gains in horsepower and torque, though the magnitude and rpm range depend on header design, tube length, diameter, and collector size.

Long tube headers feature primary tubes typically 30–40 inches long that merge into a single collector downstream. Shorty headers have tubes around 15–20 inches long that connect near the engine block, often to the existing Y-pipe or catalytic converter. Each style has distinct installation requirements, performance characteristics, and trade-offs.

Long Tube Headers

Long tube headers are preferred for high-performance builds where maximum power is the goal. Their extended primary tubes promote superior scavenging, especially at higher engine speeds, making them ideal for track days or spirited driving. However, they can complicate installation due to fitment challenges and the need for exhaust system modifications.

Benefits of Long Tube Headers

  • Substantial horsepower and torque gains, particularly in the 3,500–6,500 RPM range.
  • Optimized exhaust gas velocity that improves cylinder filling.
  • Deeper, more aggressive exhaust tone.
  • Compatibility with OBD-II tuning when combined with aftermarket exhaust and proper programming.

Installation Tips for Long Tube Headers

  1. Prepare the workspace and vehicle. Use a lift or sturdy jack stands. Disconnect the battery and allow the engine to cool fully. Remove spark plugs to prevent damage during header fitting.
  2. Remove old manifolds and related components. Unbolt the stock exhaust manifolds, upstream oxygen sensors (if equipped), and any heat shields. Expect stubborn bolts; apply penetrating oil beforehand. On some vehicles, steering shaft or motor mount bolts must be loosened to provide clearance.
  3. Check clearance before tightening. Long tubes often contact the frame, trans crossmember, or steering components. Mock-fit the header with new gaskets (copper or multi-layer steel recommended). If contact occurs, a small hammer or dimple tool can create clearance on the tube—never force the header into place.
  4. Use new hardware and gaskets. Install new manifold gaskets and header bolts. Edelbrock includes quality gaskets in their kits, but a secondary graphite gasket can improve sealing on uneven heads.
  5. Tighten in sequence and to spec. Torque header bolts from the center outward to 20–25 ft-lb, then re-torque after a heat cycle. Over-tightening can warp flanges.
  6. Modify or replace the exhaust system. Long tubes require a custom or adjustable Y-pipe or mid-pipe to connect to the rest of the exhaust. Expect to cut and weld, or purchase a matching "off-road" pipe. Ensure all connections are sealed with high-temp silicone or band clamps.
  7. Address oxygen sensor placement. Move O2 sensors to the collector or a provided bung. Extend wiring harnesses as needed, using weatherproof connectors and heat wrap near the headers.

Many long tube installations also require dropping the steering shaft or modifying the motor mounts. Check Hedman's fitment guides for your specific chassis before starting.

Shorty Headers

Shorty headers are a more accessible upgrade for daily drivers or street cars. They offer a noticeable power increase over stock manifolds without the fitment headaches of long tubes. While peak gains are lower, the torque curve often improves in the low-to-mid range, and installation can often be completed in a weekend with basic tools.

Benefits of Shorty Headers

  • Simpler installation that usually bolts directly to the factory Y-pipe or cat.
  • Improved low-end torque in many applications.
  • Reduced weight compared to cast iron manifolds.
  • Cannot cause clearance issues with front suspension or steering.

Installation Tips for Shorty Headers

  1. Disconnect battery and remove air intake components for better access to the exhaust manifold bolts. On modern vehicles, remove the engine cover, throttle body bracket, and any hoses in the way.
  2. Use a ratcheting wrench and universal joint sockets. Shorty headers sit close to the block, making top-side bolts harder to reach. A set of low-profile metric wrenches is invaluable.
  3. Replace all fasteners and gaskets. Many shorty headers, such as those from Hedman, include new bolts and gaskets. Use anti-seize on the bolts to prevent future seizing due to heat.
  4. Install the passenger side first (if vehicle is RHD, adjust accordingly). This side often has more room. For the driver side, the starter may need to be removed; it’s a good opportunity to inspect or replace it.
  5. Connect to the existing exhaust with a new gasket. Shorty headers typically include a collector flange that mates to the stock cat pipe. Use a new donut gasket and ensure zero leaks at this joint.
  6. Reinstall oxygen sensors. Factory O2 sensor locations often work with shorty headers, but a sensor extension harness may be needed. Do not use anti-seize on the sensor threads—only on the bung threads.
  7. Check for leaks after start-up. Warm the engine, then inspect each header port and collector joint with soapy water or a smoke tester. Retorque bolts if necessary after cooling.

Comparing Edelbrock and Hedman Headers

Both Edelbrock and Hedman have decades of experience and offer a wide range of headers. However, they differ in materials, fitment philosophy, and price point.

Edelbrock Headers

  • Build quality: Edelbrock headers are known for precise welding and smooth interior surfaces. Many lines feature a polished stainless steel finish that resists corrosion and looks great under the hood.
  • Fitment: Edelbrock invests in extensive R&D to ensure a direct bolt-on experience. Their headers often clear factory components without dimpling or trimming, but this precision comes at a higher cost.
  • Performance: Edelbrock's long tube designs are contoured for specific engine families (e.g., LS, small-block Chevy, Modular Ford) and typically include thick flanges to prevent warping.
  • Warranty: Most Edelbrock headers carry a limited lifetime warranty against manufacturing defects.

Hedman Headers

  • Affordability: Hedman headers are more budget-friendly while still delivering solid performance. Their standard painted or ceramic-coated lines offer good value for DIY enthusiasts.
  • Selection: Hedman produces headers for a vast array of vehicles, including older classics and trucks. They also offer "Hedman Husler" and "Hedman Elite" series for different performance tiers.
  • Ease of installation: Hedman designs often accommodate tighter engine bays. Their shorty headers are particularly friendly for street rod and muscle car applications where space is limited.
  • Customer support: Hedman provides detailed online fitment charts and phone support to help select the right part number.

For a daily driver on a tight budget, a set of Hedman shorty headers provides a reliable power bump. If you’re building a show car or want maximum performance with a guarantee of fitment, Edelbrock’s long tube headers are a worthwhile investment.

Material Choices: Stainless Steel vs. Ceramic Coated vs. Painted

Headers are available in several material and finish options that affect longevity, heat management, and price:

  • 304 Stainless Steel: Best for corrosion resistance and longevity. Edelbrock’s stainless headers offer a mirror finish and are ideal for climates with road salt. They cost 50–100% more than mild steel but will outlast the vehicle.
  • 409 Stainless Steel: A magnetic grade used by many budget headers. It resists rust better than mild steel but can discolor over time. Hedman offers 409 stainless shorty headers for a balance of performance and cost.
  • Ceramic Coated: Both Edelbrock and Hedman offer ceramic coatings that reduce under-hood temperatures by 50–75°F. The coating inside the tubes also increases exhaust velocity. Ceramic-coated headers require careful handling to avoid chipping.
  • Painted Mild Steel: The most affordable option. Hedman’s painted headers need periodic re-coating with high-temp paint to prevent rust. They are suitable for dry climates or strictly performance builds.

For installations where heat is a concern (e.g., near plastic engine components or wiring), ceramic-coated or stainless steel headers are recommended.

Header Installation Preparation

Proper preparation prevents common pitfalls during header installation. Schedule a two-day weekend for long tube headers; shorties can usually be done in a day.

  • Gather specialty tools: Oxygen sensor socket, header bolt wrench (often 3/8" or 5/16" hex), torque wrench, thread chaser, and a pick set for old gasket removal.
  • Soak bolts overnight: Apply PB Blaster or WD-40 Specialist Rust Release to manifold bolts, studs, and oxygen sensor bungs the night before.
  • Check for clearance issues online: Search forums for your specific make and model with the chosen header brand. For example, fourth-gen F-Body owners often need to dimple long tube headers for K-member clearance.
  • Consider upgrading spark plugs and wires. With headers, spark plug access becomes easier in some cases and harder in others (especially on LS engines with long tubes). Install new plugs if needed, and use heat-resistant boot sleeves to prevent wire melting.

Post-Installation Tuning and Adjustments

Headers change the engine’s air-fuel ratio and exhaust backpressure, often requiring a tune to unlock full power and prevent lean conditions.

  • Check for exhaust leaks after the first heat cycle. Listen for ticking sounds and inspect each seal with a stethoscope or smoke machine. Re-torque header bolts when the engine is cold.
  • Update ECU calibration. Long tube headers can cause the downstream O2 sensors to read incorrectly, triggering a check engine light. A custom tune (via HP Tuners or similar) can disable the rear O2 sensors or adjust the fuel trims.
  • Monitor engine coolant temperatures. Headers reduce heat retention in the engine bay, but older cooling systems may need a thermostat change (e.g., 160°F vs 195°F) to maintain optimal operating temperature.
  • Consider re-tuning the carburetor (for classic cars). Edelbrock headers paired with a matching Edelbrock carburetor often yield a seamless upgrade; leaner jets may be needed.

Long tube headers generally eliminate the pre-catalytic converters on many vehicles, making them illegal for street use in states with emissions testing (California, New York, etc.). Shorty headers that retain factory catalyst locations are often legal as long as they don’t reduce converter efficiency.

  • Check local laws before purchasing. Hedman and Edelbrock label some headers as "off-road only." You may still pass a visual inspection if the headers look like a stock manifold—shorties have a better chance.
  • For smog-legal upgrades, look for CARB Executive Order (EO) numbers. Few header manufacturers offer EO-approved products, but some shorty headers with integral catalysts do exist for specific applications.
  • Preserve original exhaust components if you plan to sell the car or move to a stricter region. Long tube headers require cutting the factory exhaust, so keep the old manifolds for reinstallation.

Sound Differences: Long Tube vs. Shorty Headers

Header choice dramatically alters exhaust tone. Long tube headers produce a deeper, more aggressive roar with pronounced high-end rasp. The longer primaries emphasize lower frequencies, giving a muscle car burble. Shorty headers deliver a sharper, more metallic sound that is less obtrusive at cruising speeds. On V8 engines, shorties often make the engine sound rowdier than stock but without the drone of long tubes. If you want a refined daily driver exhaust note, shorty headers paired with a quality muffler (e.g., MagnaFlow or Borla) offer a balanced sound.

Conclusion

Choosing between long tube and shorty headers from Edelbrock and Hedman boils down to your performance goals, installation skill level, and legal constraints. Long tubes deliver top-end power and a raw sound but demand significant fitting work and possibly a tune. Shorty headers provide a real-world performance gain with a straightforward installation that retains most factory exhaust components. Both manufacturers offer products that stand up to years of use, with Edelbrock leaning toward premium fit and finish while Hedman offers a broader selection at a lower price. Evaluate your vehicle’s use case, budget, and available tools, then follow the detailed installation tips above to ensure a leak-free, high-performance result.