These are the real deal! Sanderson Zoomie headers feature the patented leak-free flange and include bolt-in baffles that knock the sound level down just enough for street use. If the classic dragster look is desired, these headers provide the look, Sanderson quality, and powerful sound for your vehicle.
- Please review the Baffle installation Instructions information tab
Engine: Big Block Chevy 396-454, 502 V8
Primary Tube Diameter: 2.250″
- 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
- Header Bolt Set
- (8) Baffle Inserts
Sanderson’s Ceramic Coating is recommended for every vehicle application and is the default finish selection choice above. To meet high standards of quality, Sanderson applies a multi-layer inside and outside aluminized ceramic coating in-house and then polishes 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.
Zoomie and Chopster Header Baffle Inserts:
Sanderson does NOT provide mounting holes for mounting the muffler baffle inserts due to possible liability issues. Safe installation and proper securing of the insert are the responsibility of the customer or installer.
Baffle Installation Procedure:
- First, make sure the inserts are the correct size for the application. Sanderson’s 1.875″ (1-7/8″) inserts are for small block engine applications, and the 2.250″ (2-1/4″) inserts are for big block engine applications.
- For NEW installations – Notice that one end of each Sanderson muffler insert is partly closed off with a welded washer.
- Use a tape measure to determine the depth of the insert from the end of the tube. Use that measurement to mark the inside of the header tube. The insert depth should be held up slightly from the short-side radius at the lower bend and not bottom out (see image below). Measure the insert depth for every tube.
- Insert the muffler into one of the pipes of the header with the partially closed-off end first. DO NOT FORCE. The insert should be snug, but not too tight.
- There are various methods to secure the insert. Either drill a hole slightly in front of the insert and install a stove bolt and locknut (or use red Loctite); or drill and tap directly into the baffle ring, using a properly sized bolt with a small amount of red Loctite on the bolt threads
- NOTE: Some customers have used sheet metal or self-drilling/tapping screws to hold the mufflers in place, but such screws tend to vibrate loose.
- When the mufflers are securely fitted in all eight pipes, the headers are ready to install on the engine.