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Chevy V8 Pro-Billet Distributor
Part # 85551
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This is our most popular performance distributor. Must be used with an MSD 6, 7 or 8-series ignition.
Part # 85551
Be the first to write a review
Chevy V8 Pro-Billet Distributor
This is our most popular performance distributor. Must be used with an MSD 6, 7 or 8-series ignition.
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1
Emissions
This part is legal for sale and use on Emissions Controlled Vehicles, in all 50 states, when used in accordance with the manufacturers application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number.
See Emissions DetailsAlso Bought
The housing is machined from a billet of 6061-T6 aluminum on a state-of-the-art CNC machine producing exact tolerances. For high rpm stability, a .500" steel shaft is supported by a sealed ball bearing and a long sintered bushing. This shaft also receives a QPQ coating for friction reduction and resistance to corrosion. A precision machined reluctor is attached to the shaft which triggers the magnetic pick-up mounted in the housing. This high output magnetic pick-up is the most accurate way to trigger your ignition. Plus, with no moving parts to wear or adjust, the pick-up is maintenance free. Just above the pick-up is MSD's adjustable mechanical advance assembly.
Different springs and stop bushings are supplied so you can tune an advance curve to match your application.
Must be used with an MSD 6, 7 or 8-series ignition.
Features:
- CNC machined billet aluminum housing and billet aluminum base
- Will not accept a vacuum advance canister
- Must be used with an MSD Ignition Control
- Supplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts)
- O-ring seals can be added to modified blocks to improve oil pressure control
- Special oil tract improves lubrication to the distributor and cam gear
- Nylon pads ensure smooth operation of the advance weights
- Advance weight pins are staked and tig welded to the plate
- Mechanical advance assembly can be locked out for crank trigger systems
- 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 and extra long sintered bushing
- 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
- No CARB Exemption Order Number
Advance Type | Mechanical |
---|---|
Brand | MSD |
C.A.R.B. EO # | D-40-39 |
Cap Color | Red |
Category | Ignition |
Coil Wire Included | No |
Color | Red |
Distributor Cap Included | Yes |
Distributor Gear Included | Yes |
Distributor Type | Magnetic Pickup |
Emission Code | 1 |
Gear Material | Cast Iron Melonized QPQ Coated |
Housing Color | Natural |
Housing Finish | Uncoated |
Housing Material | 6061-T6 Billet Aluminum |
Ignition Box Required | Yes |
Ignition Coil Included | No |
Ignition Rotor Included | Yes |
Length | Standard |
Product Type | Distributor |
Warranty | Manufacturer's Limited 1 Year Warranty |
UPC | 085132855513 |
Warning | California Proposition 65 |
Part Number | 85551 |
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1
This part is legal for sale and use on Emissions Controlled Vehicles, in all 50 states, when used in accordance with the manufacturers application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number.
The following vehicles are considered Emissions Controlled Vehicles:
- 1966 and newer U.S. manufactured California Certified vehicles
- 1968 and newer U.S. manufactured Federally Certified vehicles
- 1968 and newer Foreign manufactured vehicle
C.A.R.B. EO #D-40-39
Manufacturer's Limited 1 Year Warranty: See Details

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*Free Shipping & Handling only offered to the contiguous US on orders over $150, excludes clearance parts and oversized packages.
Some parts are not legal for use in California or other states with similar regulations.