Chev 350 454 MSD Street Fire HEI Distributor # MSD8362 Distributor, Street Fire HEI, Magnetic Pickup, Vacuum, Mechanical Advance, Chevy, Big/Small Block, Each Computer-Controlled Compatible:No Trigger Style:Magnetic Advance Type:Vacuum and mechanical Cap Style:Male/HEI Mechanical Tach Drive:No Slip Collar:No Gear Material:Steel Ignition Box Required:No Distributor Gear Rotation:Standard Distributor Cap Color:Red Housing Material:Cast aluminum Housing Finish:Polished Marine Use:No Quantity:Sold individually. Notes:The shaft diameter on this distributor is .491 in. Coil included. These MSD Street Fire HEI distributors are packed with high-quality features and components. These distributors use a centrifugal advance assembly with coated weights and welded weight pins (not just pressed in). The Street Fires are fit with the same gear that is used on MSD Pro-Billet models. The metallurgy of this gear has been refined for years to perform through the harshest conditions. Inside the distributors, the ignition module and coil work together to produce a stout spark to light the fuel mixture for great performance. The high voltage is transferred through a specially designed rotor to the brass terminals of the distributor cap and out to the plugs. The MSD Street Fire distributors prove that quality does not have to be expensive!