This 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 this distributor is designed primarily for race engines, an oversized (+. 006") bronze gear is installed along with an adjustable slip collar for modified blocks, heads or intake manifolds. Features: Designed primarily for race applications with no mechanical advanceCNC machined billet aluminum housing and billet aluminum baseMaintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm rangeAdjustable slip collar mounting flange for engines with modified deck heightsPolished steel shaft is QPQ coated and guided by a sealed ball bearingSpecial oil tract improves lubrication to the distributor and cam gearO-ring seals can be added to modified blocks to improve oil pressure controlSupplied with a 0. 006" oversized bronze gear installedSupplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts)Must be used with an MSD 6, 7, 8, or 10 Series IgnitionWill not accept a vacuum advance canisterNo CARB Exemption Order NumberPit Stop USA offers MSD Pro-Billet Distributor w/ Locked-Out Timing - Chevy V8 85501 at low everyday prices. Be sure to check out all of our products from MSD including MSD GM Distributors.