Exhaust Manifold Headers Fit for 1965-1975 Chevy Big Block 396 402 427 454 502 V8

Exhaust manifold headers designed for compatible classic Chevrolet applications equipped with Big Block 396, 402, and 454 V8 engines. Featuring 1.65 in square primary tubes, a 2.85 in outlet, 7/16 in head flanges, and 3/8 in outlet flanges, this header setup is designed for the specified Chevrolet Big Block vehicle and engine configurations listed below.

Vehicle Fitment

• Fit for 1965-1973 Chevrolet Chevelle with 396 6.5L / 402 6.6L / 454 7.4L Big Block V8 engines
• Fit for 1969-1974 Chevrolet El Camino with 396 6.5L / 454 7.4L Big Block V8 engines
• Fit for 1973-1975 Chevrolet Laguna with 454 7.4L Big Block V8 engine
• Fit for 1971-1974 Chevrolet Caprice with 402 6.6L / 454 7.4L Big Block V8 engines
• Fit for 1971-1972 Chevrolet Kingswood with 402 6.6L / 454 7.4L Big Block V8 engines
• Fit for 1970-1972 Chevrolet Camaro with 396 6.5L / 402 6.6L Big Block V8 engines
• Fit for 1973-1974 Chevrolet Malibu with 454 7.4L Big Block V8 engine
• Fit for 1971-1974 Chevrolet Impala with 402 / 454 Big Block V8 engines
• Fit for 1968-1975 Chevrolet Bel Air with 396 6.5L / 402 6.6L / 454 7.4L Big Block V8 engines
• Fit for 1971-1972 Chevrolet Biscayne with 402 6.6L / 454 7.4L Big Block V8 engines
• Fit for 1971-1972 Chevrolet Brookwood with 402 6.6L / 454 7.4L Big Block V8 engines
• Fit for 1972 Chevrolet Townsman with 402 6.6L / 454 7.4L Big Block V8 engines
• Listed vehicle fitment is specifically based on compatible Chevrolet 396, 402, and 454 Big Block V8 applications
• Please verify the exact vehicle year, model, engine displacement, cylinder-head configuration, drivetrain, and existing exhaust layout before purchasing
• Engine swaps, aftermarket cylinder heads, modified steering or suspension components, and non-original exhaust systems may affect installation compatibility

Product Highlights

• Chevy Big Block Compatibility – Designed for the specified Chevrolet Big Block 396, 402, and 454 V8 engine applications
• 1.65 in Square Primary Tubes – Features the specified 1.65 in square primary tube configuration
• 2.85 in Outlet – Uses a 2.85 in exhaust outlet dimension for the specified header setup
• 7/16 in Head Flanges – Features 7/16 in thick head flanges for the specified cylinder-head mounting configuration
• 3/8 in Outlet Flanges – Uses 3/8 in thick outlet flanges at the exhaust connection
• Classic Chevrolet Applications – Designed around compatible Chevelle, El Camino, Camaro, Impala, Bel Air, Caprice, Malibu, and other listed classic Chevrolet models
• Exhaust Manifold Replacement Layout – Provides a tubular header configuration for compatible Chevrolet Big Block exhaust applications

Product Specifications

• Product Type: Exhaust Manifold Headers
• Vehicle Make: Chevrolet / Chevy
• Manufacturer Family: General Motors / GM
• Engine Family: Chevrolet Big Block V8
• Listed Engine Compatibility: 396 / 402 / 454 V8
• Primary Tube Size: 1.65 in Square
• Outlet Size: 2.85 in
• Head Flange Thickness: 7/16 in
• Outlet Flange Thickness: 3/8 in
• Reference Model: EH28101

Package Includes

• 1 × Set of Exhaust Headers
• Mounting Hardware
• Bolts
• Gaskets

Installation Notes

• Please verify the exact vehicle year, model, engine displacement, and exhaust configuration before purchasing
• Listed vehicle applications are based on compatible 396, 402, and 454 Chevrolet Big Block V8 engines
• Confirm cylinder-head mounting pattern, outlet dimensions, steering clearance, starter clearance, spark-plug access, and existing exhaust connections before installation
• Vehicles with engine swaps, aftermarket cylinder heads, modified transmissions, steering components, or non-original exhaust systems may require additional fitment work
• Header compatibility should be confirmed against the original manifold and available engine-bay clearance
• Professional installation is recommended