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MSD 8408 Ford HEI Distributor Cap

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MSD 8408 Ford HEI Distributor Cap
MSD 8408 Ford HEI Distributor Cap

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What's in the Box

MSD molds these distributor caps in-house. These caps are injection molded from DuPont® Rynite material and feature spark plug-style terminals. These terminals offer improved locking connections and the Rynite material is extremely strong.

MSD Rebate (Link)

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MSD 8445 Cap-A-Dapt Kit
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If the new Pro-Cap doesn't work on your application, these MSD Cap-A-Dapts will do the trick. The MSD Cap-A-Dapt adapts a large, Ford style cap onto your MSD distributor. This large cap spaces the spark plug terminals farther apart which lessens the chances of cross-fire and ionization occurring. Spark plug-style terminals are used on the cap for tight connections that will not vibrate loose.

The Cap-A-Dapts will install on most MSD Pro-Billet Distributors (except the Ford FE). Kits are supplied with a high quality cap with brass terminals, rotor and cap spacer.  

547-8445 Instructions (PDF)

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MSD 8423 Rotor for Cap-A-Dapt
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Rotor is injection molded out of DuPont Rynite for incredible strength and resistance to spark. Thick vanes are incorporated to stir up the air in the cap for even more ionization prevention.

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MSD 8446 Cap-A-Dapt Adapter Base Only
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MSD 84085 MSD Cap, Rotor Kit - 8408, 8423
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MSD 8384 Ford 351W Dual Pickup Distributor
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Installation Instructions (PDF)

Installation Instructions (PDF)

Installation Instructions (PDF)

  • Dual magnetic pickups are placed 180° apart to provide a complete redundant ignition system for racing applications
  • Easy-to-adjust mechanical advance with supplied springs and stop bushings
  • 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
  • CNC machined billet aluminum housing and billet aluminum base
  • Steel shaft is QPQ coated and guided by a sealed ball bearing
  • Will not accept a vacuum advance canister
  • Supplied with Cap-A-Dapt distributor cap and rotor
  • Must be used with an MSD 6, 7, 8, or 10 Series Ignition
  • No CARB Exemption Order Number
  • Must be used with an MSD 6, 7, 8, or 10 Series Ignition
  • Fits 351W
MSD 8421 GM Rotor Cap Assembly, Chevy V8
SKU-5478421
                        

The cap and rotor of any ignition system must be considered mainte­nance items. Just as you change the oil and filter of your car, you should always replace the cap and rotor as a set. These replacement GM rotors are adjustable and come with the brass contact.

  • Injection molded from Rynite material for incredible strength and high dielectric properties
  • Stainless steel/brass rotor trip - screwed in place to handle extreme rpm and high heat conditions
  • Deep molded vanes to stir up the air inside the cap to prevent spark ionization
  • Screws are set deep in the housing to prevent spark scatter

MSD Rebate (Link)

MSD 8420 Cap-A-Dapt Kit for Chevy V8
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                        If the new Pro-Cap doesnt work on your application, these MSD Cap-A-Dapts will do the trick. The MSD Cap-A-Dapt adapts a large, Ford style cap onto your MSD distributor. This large cap spaces the spark plug terminals farther apart which lessens the chanc

Installation Instructions (PDF)

Installation Instructions (PDF)