Beginning in 1964, if you checked the correct boxes when ordering an Olds F-85 or Cutlass, you could end up with the legendary 4-4-2. That meant you got a four-barrel carburetor, a four-speed manual transmission, and dual exhausts. When Oldsmobile stuffed their new 400 cubic inch engine into their A-Body in 1965, the meaning changed to 400 cubic inches, a four-barrel carb, and dual exhausts. If you want to bring your 442 into the 21st century, our A-Body LS Swap systems can do the trick.

Holley is home to some of the top-performance exhaust brands in the world. Brands like Flowmaster, Hooker BlackHeart, Hooker Classic, Flowtech, APR, Dinan, and Flowmonster combine to cover thousands of applications and a variety of budgets. Whether you are putting a full stainless steel exhaust on your late-model muscle car or if your rat rod needs a set of Lakester headers, Holley’s exhaust brands have you covered.