MSD 8578 Small Diameter Pro-Billet Distributor, Iron Gear For Sale - New and Used

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Ford 351W Small Diameter Pro-Billet Distributor 8578

Small diameter distributor for 351W, includes iron gear. Must be used with an MSD 6, 7 or 8-series ignition.. 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" 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.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.The distributor relies on MSD's race proven magnetic pickup and precision reluctor to deliver accurate trigger 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.

• Polished steel shaft is QPQ coated and guided by a sealed ball bearing
• Billet housing is 5/8” smaller in diameter than stock Ford distributors
• Easy-to-adjust mechanical advance with supplied springs and stop bushings
• Advance weight pins are staked and tig welded to the plate
• Must be used with an MSD Ignition Control
• CNC machined billet aluminum housing and billet aluminum base
• 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
• 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
• No CARB Exemption Order Number
• Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range

General Policies

Warranty & Return Policy

• Holley Performance Products warrants new products to be free from defects in material and workmanship for a period of 90 days from date of purchase. Many items may have longer warranties please see Item Specifics above or contact us for information.
• Holley Performance Products Limited Warranty specifically does not apply to items or products, which have been (a) modified or altered in any way; (b) subjected to adverse conditions, such as misuse, neglect, accident, improper installation or adjustment, dirt or other contaminants, water,corrosion, or faulty repair; or (c) used in other than those applications recommended by Holley Performance Products. Holley Performance Products also does not warrant, and disclaims all liability for products used in racing activities and/or applications other than those specifically recommended in the current brand catalog.
• Warranties do not apply to items sold as Used. We want to make sure that every customer is completely satisfied with their purchase. Although obsolete, scratch & dent and used items do not have a warranty, we understand that things happen and every situation is different. Please let us know of any issues you may have before leaving response so we have an opportunity to make things right. We will do everything possible to make sure you are fully satisfied with your purchase and we want to earn your continued business!
• Buyer pays return shipping

Shipping & Tracking

• Please see the “Shipping and Payment” tab
• We ship all US orders via United Parcel Service (UPS Ground)
• A signature is required on all UPS orders over $750
• Tracking information will be sent via email after your package ships (you must supply a valid email address during checkout)
• We ship within 1 business day upon receipt of payment
• We do not ship to APO/FPO or US Post Office Box addresses
• We can not ship as a "GIFT" or ship anything internationally with changes to the invoice

Customer Service & response

• Our customer service hours are 8:00 am – 5:00 pm Central Time Monday thru Friday (excluding holidays)
• If you are not certain about an item or have questions, use the “Ask Seller a Question” link under the listing. We strive to answer questions submitted thru ’s message system within 1 business day
• We want you to be completely satisfied with your purchase – please let us know if you have any problems with your purchasebefore leaving responseso we have a chance to make it right – we want your repeat business!

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