Thanks to its popularity, the 4-4-2 was now its own standalone model as opposed to a trim level for the Cutlass. Initially offered with a 400 cubic inch engine claiming 350 horsepower, GM took the gloves off for 1970, allowing Oldsmobile to stuff in its 455 cubic inch big block between the A-body's frame rails.

When adding a 5 or 6-speed transmission to your classic muscle car, we have the driveline conversion components you need. Whether it’s a shifter, transmission crossmember, or tunnel patch, we have the brands and components you need to upgrade and complete your driveline conversion. Most parts in this category assume you will be keeping the original engine. For engine and transmission combination swap parts, look to the Engine Swap Parts Category.