Our popular Ford big block billet distributor, now supplied with a steel gear installed for specific camshaft requirements.Under the stainless steel terminals of the MSD cap and rotor is an easy-to-adjust mechanical advance assembly. The assembly is fine blanked from chromyl steel, TIG-welded for strength plus receives a QPQ coating. The precision weights glide on nylon bushings for smooth advancement and different springs and stop bushings are supplied so a variety of advance curves can be tuned.The steel shaft that spins the advance and reluctor receives a friction reducing coating plus is guided by a sealed ball bearing and long sintered bushing. This combination provides stable timing signals and spark delivery at any rpm. Triggering chores are handled by MSD's race proven, maintenance-free magnetic pick-up.*Will not clear some factory-style Shaker Hood Scoops.

Features:

CNC machined billet aluminum housing and Dupont Rynite base

High quality Steel Gear installed

Supplied with Cap-A-Dapt and rotor (accepts MSD socket style caps)

Must be used with an MSD Ignition Control

Mechanical advance assembly can be locked out for crank trigger systems

Nylon pads ensure smooth operation of the advance weights

Advance weight pins are staked and tig welded to the plate

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

Easy-to-adjust mechanical advance with supplied springs and stop bushings

Guides & Documents

Distributors Installation Instructions (54785801)

CARB Warning

For use on pre-1966 vehicles only

Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering there are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CARB warning

MSD 85801 Specifications

KEY SPECS
MFG. Part #	85801
Brand	MSD
Cap Type	HEI / Male
Advance Type	Mechanical

GENERAL
Trigger Style	Magnetic
GTIN Code	085132858019

Ratings & Reviews

Be the first to write a review.

Questions & Answers

Be the first to ask a question.