Pro-Billet DistributorSmall/Big Block Chevy, Extra Tall, Adjustable Slip Collar, Magnetic TriggerBrand: MSDPart Number: MSD8547Description: Extra tall housing is designed for use with Alan Root, Donovan, Merlin and Rocket racing blocks CNC machined billet aluminium housing and Dupont Rynite base Adjustable slip collar mounting flange provides up to 3" of adjustment Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range Polished steel shaft is QPQ coated and guided by a sealed ball bearing and long sintered bushing Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction Mechanical advance assembly can be locked out for crank trigger systems Advance weight pins are staked and tig welded to the plate Nylon pads ensure smooth operation of the advance weights Special oil tract improves lubrication to the distributor and cam gear O-ring seals can be added blocks to improve oil pressure control Supplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts) Must be used with an MSD 6, 7, 8 or 10 Ignition Control. If you have a slightly taller block or have decked the heads, the distance between the distributor mounting pad and the cam gear/oil pump drive may be different. MSD offers these Distributor with an adjustable slip collar with 1.5" of adjustment so you can be sure the distributor is installed correctly. The distributor shares the same features of the standard Pro-Billet Chevrolet model including a ball bearing guide, long sintered lower bushing and an oil seal. To trigger the MSD Ignition a maintenance-free magnetic pick-up is secured in the billet base of the distributor. Just above this pick-up assembly is an adjustable mechanical advance assembly.
