MSD's Ready-to-Run Ford distributors are the perfect upgrade for bulky duration systems or ancient breaker point models. These distributors come complete and Ready-to-Run. All you need to do is drop it in the engine, connect three wires and fire the engine. Each distributor features an ignition module that produces a powerful inductive spark to improve combustion of the fuel mixture resulting in quick starts, smooth idle and increased performance. The billet aluminum housings of these distributors are 5/8 In. smaller in diameter to accommodate induction setups and tight engine compartments. A maintenance-free magnetic pick-up is responsible for triggering the high voltage sparks while a sealed ball bearing guides an oversized shaft. Beneath the bolt down cap and MSD race rotor you'll find MSD's accurate mechanical advance assembly. Different advance springs and stop bushings are supplied so you can easily tune a curve to match your needs. Product Features:Now includes built-in Rev LimiterBuilt-in module produces a 7.5 amp single spark through high rpmEasy-to-adjust mech. advance w/supplied springs and stop bushingsVacuum advance canister for improved economy (can be locked out)CNC machined billet aluminum housing and billet aluminum baseHousing Is 5/8 in. Smaller In Diameter Than Stock Ford Distr.Maintenance-free magnetic pickup and precision reluctorCreates stable trigger signals throughout the rpm rangePolished steel shaft is guided by a sealed ball bearingAdvance plate and weights are fine blanked from chrome moly steelQPQ coated for friction reductionMech. advance assem. can be locked out for crank trigger systems