Chevy V8 Pro-Billet Distributor Locked-Out From The Factory. Must Be Used With An 6, 7 Or 8-Series MSD IgnitionThis strong, billet aluminum distributor is set up for engines that run locked out timing or an MSD Timing Computer. With no advance assembly, the rotor plate is welded directly to the oversized shaft. A sealed ball bearing guides the top of the shaft while an extra long sintered bushing stabilizes the lower portion. Trigger signals are produced via a high output magnetic pick up. This pickup is extremely accurate and never requires adjustment. Since