Product Summary

HEI / Male Cap Type, Mechanical and Vacuum Advance Type

  • Now includes build-in rev limiter!
  • Supplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts)
  • 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
  • Vacuum advance canister for improved economy (can be locked out)
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Key Specs

MFG. Part #85891
BrandMSD
Cap TypeHEI / Male
Advance TypeMechanical and Vacuum
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Need To Know

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MSD 85891 Details

The Pro-Billet Ready-to-Run distributor is the perfect upgrade for outdated points distributors or bulky HEIs. Simply install the distributor in the engine, connect three wires, the coil and fire it up!
The Holden Ready-to-Run features MSD's adjustable mechanical advance which allows you to custom tailor an ignition curve to match your engine's needs. There is also a vacuum advance canister to help improve economy. For positive street performance, the Ready-to-Run is the best choice.
A maintenance-free magnetic pick-up accurately triggers the module. The increased output of the amplifier easily outperforms stock ignitions and will smooth out the engine's idle, improve starting and provide a much higher rpm range.
Includes a separate tach circuit that is ideal to trigger an aftermarket EFI such as an Atomic EFI system.
Features:
Now includes build-in rev limiter!
Supplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts)
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
Vacuum advance canister for improved economy (can be locked out)
Advance weight pins are staked and tig welded to the plate
Easy-to-adjust mechanical advance with supplied springs and stop bushings
Simple and clean installation with only three wires to connect
Mechanical advance assembly can be locked out for crank trigger systems
Powerful built-in module produces a 7.5 amp single spark through high rpm
Does not require an MSD Ignition Control
Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range
Polished steel shaft is QPQ coated and guided by a sealed ball bearing
Nylon pads ensure smooth operation of the advance weights
Special oil tract improves lubrication to the distributor and cam gear

Specs

  • Brand: MSD
  • Category: Ignition
  • Color: Red
  • Distributor Cap Included: Yes
  • Distributor Type: Ready To Run
  • Emission Code: 3
  • Gear Material: Cast Iron Melonized QPQ Coated
  • Grade Type: Performance
  • Ignition Box Required: No
  • Ignition Coil Included: No
  • Ignition Rotor Included: Yes
  • Part Type: Distributor
  • Product Type: Distributor
  • Sub Category: Distributor and Magneto
  • Warning: California Proposition 65
  • Warranty: Manufacturer's Limited 1 Year Warranty

MSD 85891 Specifications

KEY SPECS
MFG. Part #85891
BrandMSD
Cap TypeHEI / Male
Advance TypeMechanical and Vacuum
GENERAL
External Ignition Box RequiredNo
Trigger StyleMagnetic
Distributor Cap ColorRed
Ignition Box RequiredNo
Coil IncludedNo
Sold in QuantityEach
Spark Plugs IncludedNo
Spark Plug Wires IncludedNo
Rev Limiter IncludedYes

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