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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.
Does it fit my vehicle?Does it fit my engine?
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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
Different springs and stop bushings are supplied so you can tune an advance curve to match your application.
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.
Must be used with an MSD 6, 7 or 8-series ignition.
Features:
- 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
- Polished steel shaft is QPQ coated and guided by a sealed ball bearing and extra long sintered bushing
- Mechanical advance assembly can be locked out for crank trigger systems
- Nylon pads ensure smooth operation of the advance weights
- O-ring seals can be added to modified blocks to improve oil pressure control
- Easy-to-adjust mechanical advance with supplied springs and stop bushings
- No CARB Exemption Order Number
- Supplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts)
- Will not accept a vacuum advance canister
- Special oil tract improves lubrication to the distributor and cam gear
- Maintenance-free magnetic pickup and precision reluctor create stable trigger signals throughout the rpm range
- CNC machined billet aluminum housing and billet aluminum base
- Must be used with an MSD Ignition Control
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 |
Grade Type | Performance |
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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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.