MSD 8578 Distributor

Compatible with 351W. Must be used with an MSD 6, 7 or 8-series ignition.;<br><br>MSD engineers fit all of their high performance distributor experience into a special compact housing designed to be less obtrusive for Ford engines. The diameter of the special cap and housing are 5/8 in. smaller than stock Ford distributors providing extra room in front of the engine. The new MSD cap features spark plug style terminals and is firmly screwed down to the housing.<br><br>The distributor relies on MSD's race proven magnetic pickup and precision reluctor to deliver accurate reluctor signals to the MSD Ignition throughout high rpm. The reluctor assembly is turned by a hardened steel shaft which rides in a sealed ball bearing for high rpm stability and endurance.<br><br>Mounted to the top of this shaft is a fully adjustable mechanical advance assembly. The rate at which the chromoly assembly advances the timing is easily controlled by changing the supplied advance springs and stop bushing for total advance.;

• Billet housing is 5/8” smaller in diameter than stock Ford distributors
• Must be used with an MSD Ignition Control
• Supplied with small diameter cap with HEI style terminals and race rotor (will accept 8441 Cap-A-Dapt)
• Nylon pads ensure smooth operation of the advance weights
• Advance weight pins are staked and tig welded to the plate
• Mechanical advance assembly can be locked out for crank trigger systems
• Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction
• Polished steel shaft is QPQ coated and guided by a sealed ball bearing
• Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range
• CNC machined billet aluminum housing and billet aluminum base
• Easy-to-adjust mechanical advance with supplied springs and stop bushings
• No CARB Exemption Order Number