Sanderson Headers C12 Small Block Chevy Full Length

Sanderson Headers C12 Header Set, Small Block Chevy, Chevelle and El Camino

The C12 is a full-length header set designed for performance small block Chevy engines in 1964-up Chevelle, Malibu, Monte Carlo, and El Camino (GM A-Body) vehicles. It provides easier exhaust connection compared to shorty/block hugger headers and is available in both 1-5/8″ and 1-3/4″ primary tube sizes.

NOTES:

• Fits straight and angle plug cylinder heads
• Please specify if you’re using Vortec-style heads
• Available with special D-port flanges for GM ZZ4, ZZ6, and 90s LT-1 heads
• Please note A/C-equipped 1968–72 vehicles require a specific passenger-side header

SPECIFICATIONS:

• Engine: Small Block Chevy 265-400
• Primary Tube Diameter: 1-5/8″ or 1-3/4″
• Collector Diameter: 3.0″

FEATURES:

• 16-Gauge Primary and Collector Tube Thickness
• 3/8″ Thick Flange
• Patented Flange Design Requires NO Gaskets
• Tightest Fitting Header Available Anywhere!
• Made in the USA

INCLUDES:

• Header Bolt Set
• Collector Reducer Set

FINISH:

Our Ceramic Coating is recommended for every vehicle application and is the default finish selection choice above. To meet high standards of quality, we apply a multi-layer inside and outside aluminized ceramic coating in-house and polish the coating to a high luster. This aerospace and military-grade technology adds excellent protection to your headers while offering the benefit of thermal control in your engine bay. It also improves cylinder scavenging of exhaust gases and increases the longevity of your header investment.

What is a D-Port?

We often see confusion in what is considered a D-Port cylinder head for small block Chevrolet engine applications. The problem originates in the technical understanding of what constitutes a true D-PORT versus a D-shape. The D-Port roof extends well above the centerline of the exhaust port, whereas the D-shaped port fits nicely inside what is deemed a standard port dimension. As shown in the graphic below, the d-shape easily fits within the common round or square port flange opening.

Where other header manufacturers use a typical flat header flange and gasket for sealing, the patented raised flange design of the Sanderson Headers requires different flanges for different small block Chevy exhaust port shapes. Other header flanges will often block the top of the exhaust port on D-port heads. When using a Sanderson D-Port flange the port is not blocked. However, using the wrong flange with a Sanderson header may expose open areas that will not seal, creating an exhaust leak.

Examples:

1. Using a D-port flange on a common GM head (standard round, square, or D-shaped port), the header port flange open is larger (taller opening) than the sealing area around the exhaust port (additional details below, comparing two BRODIX Track 1® cylinder heads)
2. Using a standard Sanderson header flange on a D-port cylinder head has a similar problem, where the cylinder head exhaust port opening may extend above the raised flange sealing area, again creating the possibility of an exhaust leak.

Here is an example of a small block Chevrolet D-port cylinder head that requires the Sanderson D-Port header flange.

WARRANTY:

Limited 5-Year

Sanderson Street Rod Headers strives to supply our customers with the highest quality parts and services available in the street rod industry. In keeping with this, we warrant and will repair or replace, at our option after inspection in our facility, any of our products found to have failed due to defects in either material or workmanship. This warranty is activated by the return of the Warranty Card enclosed with every pair of headers and is effective for FIVE YEARS * from the purchase date on the original invoice.

This warranty does not cover products that fail due to improper motor tuning, alteration, disassembly, or damage caused by racing, misuse, neglect, abuse, improper installation and/or accident, or when used on applications for which they were not designed or approved. Use of external thermal wrap voids the warranty. We are not responsible for removal, installation, transportation, or other related costs.