CNC machined billet aluminum housing is 3/8 inch smaller in diameter and 7/8 inch shorter than conventional Chevy V-8 distributors with the points type capMaintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the RPM rangeEasy-to-adjust mechanical advance with supplied springs and stop bushingsAdjustable slip collar mounting flange for engines with modified deck heightsPolished steel shaft is QPQ coated and guided by a sealed ball bearing and extra long sintered bushingThis distributor was designed for racers and street rodder that have space limitations due to firewall interference, blowers or oversized intake manifolds such as tunnel rams. The distributor is 3/8 inch Narrower and almost 1 inch Shorter than a standard distributor. Proven performance features include a high output magnetic pick-up and precision machined reluctor for accurate ignition triggering. A fully adjustable mechanical advance allows you to tailor the advance curve to your specific application. Topping it all off is our own small diameter cap. This is molded out of durable Rynite material and comes with an optional wire retainer.