Overview Rather than ancient breaker points, this distributor uses a maintenance-free non-magnetic pickup to trigger the ignition control. Atop the distributor shaft is our proven centrifugal advance that allows you to alter the rate and amount of mechanical advance which is a very important tuning step with a Y-Block. | The Ford Y-Block holds a special place in Ford's history books and with blue oval enthusiasts. To ensure precise spark delivery and control, MSD offers a Pro-Billet Distributor for most Y-Blocks. | This distributor requires an MSD Ignition Control such as a 6A or 7-series ignition which will provide plenty of energy and multiple sparks to make your vintage Ford purr. Must be used with an MSD 6, 7 or 8-series ignition. May hit firewall seam on 57-59 full size cars Features Mechanical advance assembly can be locked out for crank trigger systems Nylon pads ensure smooth operation of the advance weights Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range Requires an MSD Ignition Control Vacuum advance canister for improved economy (can be locked out) CNC machined billet aluminum housing and billet aluminum base Advance weight pins are staked and tig welded to the plate May hit firewall seam on '57-'59 full size cars. Polished steel shaft is QPQ coated and guided by a sealed ball bearing Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction