MSD Pro-Billet Distributors are the finest performance and racing distributors available. Every feature has been engineered to endure the rigors of high performance and racing engines. Whether cruising the streets or racing stock cars, dragsters, boats or trucks, MSD has a distributor for it. MSD uses state-of-the-art, Computer Numerical Controlled (CNC) mills and lathes to machine each housing. After a long series of precise cuts and movements, the billet is formed into a flawless distributor housing that is accurate to within 0.001”. The flex-free housings are lightweight, have no porosity or weak areas and look great on polished, show quality engines.
Features:

Must be used with an MSD Ignition Control
Polished steel shaft is QPQ coated and guided by a sealed ball bearing for smooth operation at all rpms
Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range
CNC machined billet aluminum housing and billet aluminum base providing superior strength and great looks
Easy-to-adjust mechanical advance with supplied springs and stop bushings (except locked out versions)
Advance plate and weights are fine blanked from chrome moly steel and QPQ coated for friction reduction
Advance weight pins are staked and tig welded to the plate
Nylon pads ensure smooth operation of the advance weights
Mechanical advance assembly can be locked out for crank trigger systems or racing applications
Vacuum advance canister for improved economy (can be locked out)
Fits 351C-460 Ford

Charts

Instructions (pdf)

Rebates

APR 10% Off Select Parts Spring Promotion 2026

ARP10%OFFSPRINGPROMO2026

Holley's Euro Brands Precision Performance Sale, running from May 11, 2026, through May 31, 2026. For a limited time, customers can save 10% off on select APR branded parts. Sale prices apply to purchases made during the sale period only.

Guides & Documents

Distributors Installation Instructions (54785773)

CA Prop 65

CARB warning

MSD 85773 Specifications

D-40-39

KEY SPECS
MFG. Part #	85773
Brand	MSD
Cap Type	HEI / Male
Advance Type	Mechanical
CARB EO#

GENERAL
External Ignition Box Required	Yes
Cap Terminal Style	HEI / Male
Trigger Style	Magnetic
Hall Effect	No
Sync Signal	No
Trigger Sensors	Single
Gear Material	Iron
Gear Rotation	Standard
Distributor Cap Color	Black
Ignition Box Required	Yes
Mechanical Tach Drive	No
Slip Collar	No
Housing Material	Billet Aluminum
Housing Finish	Gloss
Emissions	California EO Approved
Marine Use	No
Sold in Quantity	Each
Notes	Small base diameter for extra clearance.
GTIN Code	085132857739

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Fitment

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1973-1974 Ford Torino

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