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MSD 8566 Pro-Billet Distributor

  • Oldsmobile housing machined from 6061-T6 aluminum
  • Two sealed ball bearings, 0.500 inch shaft
  • Stable through 10,000+ rpm
  • Adjustable mechanical advance, magnetic pickup
  • 11.4 pounds, 30 day warranty

Updated 2 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A CNC machined Oldsmobile distributor with sealed bearings, a magnetic pickup and an adjustable mechanical advance. It ships with a red cap with brass terminals and a race rotor.

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ASIN: B000BYAOCOModel: 8566Category: Distributors

Overview

MSD machines this Oldsmobile distributor housing from billet aluminum using the same techniques as the rest of its line. Two sealed ball bearings guide the shaft, and a high-output magnetic pickup bolted to the base triggers the ignition.

The advance assembly is welded to a polished steel shaft and can be adjusted, and the cap and race rotor are supplied. The warranty is brief, and the listing names no ignition box requirement.

Who it's for

Matched to Oldsmobile builds that spin to high rpm and need stable timing. Owners with other engine families, or those wanting a longer warranty, should look elsewhere.

Pros and cons

Pros
  • CNC machined billet aluminum housing
  • Two sealed ball bearings
  • Adjustable mechanical advance
  • Cap and race rotor supplied
Cons
  • Short thirty day warranty
  • Ignition box need not stated
  • Engine variants not listed

Performance notes

Two sealed ball bearings guide the shaft accurately at high rpm, and the high-output magnetic pickup produces a precise trigger signal. The adjustable mechanical advance assembly is welded on top of the polished steel shaft, so timing curve changes are made at that assembly.

Specifications

Model8566
Dimensions & fit
Shaft diameter0.500 inch
Weight11.4 pounds
Construction & materials
Housing6061-T6 aluminum, CNC machined
Included components
IncludedRed cap with brass terminals, race rotor
Warranty & support
Warranty30 Days
Other details
Engine fitOldsmobile
BearingBall Bearing (two sealed)
Rated rpm10,000+ rpm
PickupHigh-output magnetic
Part number8566

Frequently asked questions

How do I maintain the MSD 8566 distributor?

The listing gives no maintenance instructions. It lists two sealed ball bearings and a magnetic pickup bolted to the base.

What comes with the MSD 8566 Pro-Billet distributor?

The description names an MSD red cap with brass terminals and a race rotor.

What engine is the MSD 8566 distributor for?

The description calls it an Oldsmobile housing. It does not name engine sizes.