• Same features as PN 85551 Distributor plus adjustable slip collar for engines with modified deck heights
• CNC-machined billet aluminum housing & base
• Easy-to-adjust mechanical advance
• Magnetic pickup & precision reluctor create stable trigger signals throughout rpm range
• Advance plate & weights fine blanked from chrome moly steel
• O-ring seals can be added to modified blocks to improve oil pressure control
• Supplied with HEI style distributor cap & rotor (accept Cap-A-Dapts)
• Must be used with an MSD Ignition Control
• Will not accept a vacuum advance canister
• No CARB Exemption Order Number