Patriot Exhaust Uncoated Raw Steel 1.625” Primary 3” Collector Mid-Length Headers SBC 283-400 Chevy Chevelle/ El Camino 1964-1972
Highlights
- "Clipster" Style Headers
- Unlocks Performance Potential
- Durable Steel Construction
- Includes Installation Hardware
Patriot Exhaust Uncoated Raw Steel 1.625” Primary 3” Collector Mid-Length Headers for 1964-1972 Chevy Chevelles and El Caminos with a 283-400 Small Block Engine.
These mid-length headers (H8021) avoid clearance issues often posed by long tube headers. This makes them the ideal upgrade for lowered Chevy muscle cars with a 283-400 Small Block engine! They enhance horsepower and torque with durable steel tubing that optimizes flow. They also come unfinished for a raw look.
Features and Benefits:
- Increased horsepower and torque for enhanced performance
- Mid-length design maintains ground clearance on lowered vehicles
- Constructed from durable 16- and 18-gauge steel tubing
- Comes complete with gaskets, header bolts, and collector reducers
- 1.625" primary tubes optimize exhaust flow
- 3" collector size
- Uncoated raw steel
Vehicle Fitment:
- 1964-1972 Chevy Chevelle
- 1964-1972 Chevy El Camino
- 283-400 SBC Engine
Fitment Notes:
- Fits most angle plug heads.
- Fits D-Port cylinder heads including ZZ4 crate engines. Will NOT fit GM Fast Burn head #19300955 or SP350, SP383 & ZZ6 engines.
- Requires removal or modification of locking steering columns if equipped.
- Installation requires left side A/C bracket part #H7608.
- Must use non-shell type motor mounts.
California Residents: Proposition 65 Warning
Related Categories: Exhaust
Only for use on pre-pollution controlled vehicles: This product can be used on vehicles that were manufactured before emissions control regulations were imposed. Pre-pollution vehicles are defined as:
- 1965 and older U.S. manufactured California certified vehicles
- 1967 and older U.S. manufactured federally certified vehicles
Installation Difficulty

Intermediate skill is required for this installation.
Installation Instructions
Vehicle Fitment
This product will fit the following Chevelle years:
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
This product will fit the following El Camino years:
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,