Fortunately, MSD now offers the Pro Billet LT1 distributor, a comprehensively upgraded OptiSpark unit designed to fit all LT1- and LT4-powered Corvettes.

MSD added a Pontiac specific Pro-Billet distributor (PN 8563) to its lineup in the mid-'90s. While quite popular with Pontiac performance enthusiasts, it lacks vacuum advance, and that can limit ...

MSD's new distributor cap is part of the Pro-Billet LT1 Distributor package. Molded from DuPont Rynite, a material that exhibits superb dielectric properties, the cap also has redesigned traces to ...