This top-of-the-line distributor from MSD contains a variety of features that are designed to keep your Cadillac operating at peak performance levels. Each housing begins as a billet of 6061-T6 aluminum before being CNC-machined to precise dimensions for any 368, 425, 472 and 500 cid engine. The sturdy, flex-free housing is fitted with a sealed ball-bearing and long sintered bushing for high-rpm accuracy. The race proven magnetic pick-up ensures timing accuracy within one degree at any rpm and the adjustable mechanical advance is supplied with different springs and stop bushings, which allow you to customize your advance curve. For street cruising economy, each distributor is also equipped with a vacuum advance canister. Sold per each.