Dougs Headers 3” Ceramic-Coated 1.75” Mid-Length Header BBC Chevy Chevelle/El Camino 1966-1972
Highlights
- Superior Performance Gains
- Preserves Ground Clearance
- Heavy-Duty 16-Gauge Tubing
- Includes Hardware & Gaskets

Dougs Headers 3” Ceramic-Coated 1.75” Mid-Length Header for 1966-1972 Chevy Chevelles and El Caminos with a Big-Block Chevy Engine.
This premier mid-length header (D306) is optimal for 1966-1972 Chevelle and El Caminos. Crafted from high-quality steel, this header is built to withstand grueling conditions. The sleek metallic ceramic coating promises a significant boost in horsepower. It also provides corrosion and rust resilience. This header is perfect for vehicles with lowered suspensions or where long tube headers might pose clearance issues. The header blends performance, quality, and reliability seamlessly.
Features and Benefits:
- CNC mandrel-bent tubes for precise fit and optimal flow
- Heavy-duty 16-gauge tubing ensuring long-lasting performance
- Pre-polished tubes eliminating scratches pre-coating application
- 3.0” collectors for enhanced exhaust flow
- 1.75” primary tubes guaranteeing greater efficiency
- 0.375” flange thickness for robust durability
- Inclusive hardware and gaskets for hassle-free installation
Vehicle Fitment:
- 1966-1972 Chevy Chevelle/El Caminos
- Fits big-block 396-502 Chevy engines
Please Note: Not recommended for Gen-6 502cid engines with aluminum heads.
California Residents: Proposition 65 Warning
Related Categories: Exhaust, Restomod
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,