Exhaust Header · SKU 701807515529
EXHAUST Headers 2312 Super Comp. Block Hugger Header Chevy LS1 350 Eng
A pair of 1-5/8 inch primary mandrel bent stainless steel exhaust headers for the 1923-1954 Chevrolet and Cadillac vehicles, and 1950-1964 Chevrolet Bel Air, Impala, Biscayne, and Nomad, and 1953-1967 Chevrolet Corvette. Built with 304 stainless steel, it includes all necessary hardware, bolts, and graphite gaskets. Designed for V8 engines with displacements of 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L. The headers feature CNC machined flanges and polished finish, and are a direct bolt-on replacement for original equipment.
- Material304 Stainless Steel
- SurfacePolished
- Primary Size1-5/8 inch
- Collector Size2-1/2 inch
What You Get
Key Benefits
- 1-5/8 inch primaries with mandrel bending improve exhaust flow and reduce turbulence
- 304 stainless steel construction resists rust and heat cycling better than mild steel
- CNC machined flanges ensure a flat sealing face for a leak-free joint under load
- Polished finish enhances appearance and reduces surface oxidation over time
- All hardware, bolts, and graphite gaskets included in the kit for a complete installation
Why Buyers Switch
Problems It Solves
- Factory exhaust manifolds restrict flow and reduce engine efficiency in older V8s
- Mild steel headers rust at the flange and gasket interface after exposure to moisture
- Missing hardware or gaskets delay installation and increase shop labour time
- Poorly fitted flanges cause exhaust leaks that degrade performance and create noise
Where It Is Used
Application Scenarios
- Classic car restorers upgrading engine performance on pre-1965 Chevrolet and Cadillac models
- Performance shops installing bolt-on headers for vintage V8 engines with 5.7L and 6.0L displacements
- Online sellers offering vehicle-specific exhaust parts with complete hardware included
- Restoration workshops needing reliable, corrosion-resistant headers for show and street use
Buyers
Who It Is For
- Classic car parts distributors stocking vintage performance hardware
- Vintage truck and car owners restoring original or high-performance engines
Construction
Technical Features
- Pair of 1-5/8 inch primary tubes with mandrel bent construction
- 2-1/2 inch collector with equal length primary design
- 304 stainless steel seamless tubing with polished finish
- CNC machined flanges for precise fit and sealing
- All necessary hardware, bolts, and graphite gaskets included
- Bolt-on fitment with factory routing and mounting points
Data
Specifications
| Material | 304 Stainless Steel |
|---|---|
| Surface | Polished |
| Primary Size | 1-5/8 inch |
| Collector Size | 2-1/2 inch |
| Flange | CNC machined |
| Hardware | All bolts, nuts, and gaskets included |
| Fitment | 1923-1954 Chevrolet Cars & Trucks, 1923-1954 Cadillac Cars, 1958-1964 Chevrolet Impala & Biscayne, 1950-1964 Chevrolet Bel Air, 1953-1967 Chevrolet Corvette |
| Engine | V8 Engines Only 4.8L, 5.3L, 5.7L, 6.0L, 6.2L |
| Application | Block Hugger Header Design |
Material
Materials
- 304 stainless steel tube
- Graphite manifold gaskets
- CNC machined flanges
- Stainless steel bolts and hardware
Manufacturing
How It Is Made
Mandrel bending of 1-5/8 inch primary tubes to match factory routing
CNC machining of flanges for flat sealing face and precise bolt hole alignment
Polishing of exterior and interior surfaces to a uniform finish
Final inspection of fit and finish before packaging
Checks
Quality Control
- Flange bolt pattern verified against factory template before welding
- Weld seams inspected for pinholes and uniformity along the full joint
- Surface checked for polishing defects, scratches, and handling marks
- Final fit check against a known good factory manifold before packing
Private Label
Customisation Options
- Private label packaging available on request
- Bulk cartons for container orders instead of retail boxes
Comparison
Compared With The Alternatives
| Factory cast iron manifolds | Original manifolds restrict flow and retain heat, this header improves exhaust velocity and engine response |
|---|---|
| Mild steel aftermarket headers | Mild steel is cheaper but rusts at the flange; 304 stainless resists corrosion in humid or salty environments |
| Universal headers requiring welding | Universal headers need cutting and welding, this one bolts on without modification |
Installation
Use Guide
- Confirm the vehicle is within the listed model years and engine types
- Remove the factory manifolds and clean all mating surfaces before installation
- Use new graphite gaskets and tighten bolts in a crisscross pattern to avoid warping
- Torque all bolts to manufacturer specifications to prevent leaks
- Recheck torque after the first heat cycle to maintain a seal
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Answers
Questions About This Part
Does this fit a 1965 Chevrolet Impala?
No. The part covers 1958-1964 Chevrolet Impala and is not designed for 1965 models.
What engine sizes are compatible?
This header is for V8 engines only with displacements of 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L.
Is the flange included or do I need to weld it on?
The CNC machined flange is already welded to the tube. The header ships as a complete unit with all hardware.
What material is used and why does it matter?
304 stainless steel is used for its resistance to rust and heat cycling, especially in older vehicles exposed to moisture and road conditions.
What is included in the package?
One pair of headers, all necessary bolts, nuts, and graphite gaskets are included.
Can we get private label packaging?
Yes. Private label packaging and barcode labels can be arranged, and bulk cartons are available for container orders.
Is this legal for street use?
Emissions regulations vary by region. We do not claim emissions compliance for this part. Check local laws before installation or resale.
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