Doug Thorley of Doug's Headers


F
or the development and production of high performance exhaust systems for a wide variety of vehicles including muscle cars, street rods, and race cars.

In 1958 a small muffler shop in East Los Angeles, California was purchased for $1200. This was the beginning of the now famous exhaust header company known as Doug's Headers. The company expanded rapidly from a muffler repair shop into a shop that was designing and building innovative exhaust components such as headers and free flowing exhaust systems. One of the factors that allowed Doug's Headers to grow was the philosophy of the company to build exhaust products of the highest quality and that fit and outperformed anything on the market at the time.

Doug's Headers utilized the racetrack to prove and improve its designs. The cars that used the products produced by Doug's Headers were consistently among the top performers in their various classes. Many of the cars running headers designed and built at Doug's Headers were record holders in their particular classes. This type of testing challenged Doug's Headers to research innovative designs in exhaust products in able to keep ahead of the competition. As the number of trophies and records accumulated and demand increased for cars equipped with Doug's Headers it caused the business to grow into the industry leader.

Improving the power output of the engine is what header design is all about, but if there are fit problems, which require tube modifications, the performance of the header is compromised. Doug's Headers puts great effort into the proper fit of its products, which allows the customer to realize the full potential of their Doug's Headers. The philosophy of Doug's Headers is "the customer should only have to install the headers, they should not have to remanufacture them to make them fit the vehicle".

Quality is paramount at Doug's Headers. Headers intended for heavy-duty applications utilize 5/8" thick flanges welded to 14-gauge tubing and 3/8" thick flanges welded to 16-gauge tubing is used for lighter duty applications. All headers are built to very exacting tolerances to guarantee proper fit and the flanges are ground flat to assure long gasket life. All headers are supplied complete with the necessary gaskets, bolts and connectors to complete the installation. When you purchase a set of Doug's Headers you can rest assured that the header will fit, performance will be increased and fuel economy will be improved.

Today Doug's Headers produces performance exhaust products for a wide variety of vehicles from early Hot Rods to Muscle cars to the latest pick-ups, SUVs and Motor Homes. Doug's Headers is constantly developing and designing new and innovative products, so if you don't see your particular application in this catalog give us a call. We do custom work and can build headers and exhaust for most any application. Doug's Headers has the answer for your performance exhaust needs.