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MSD Ignition Pro-Billet Distributor Chevy V8

MSD Ignition 85551

121-85551

made in usa
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MSD Ignition Pro-Billet Distributor Chevy V8 $268.95
Pro-Billet Distributor
  • Chevy V8
  • Must Be Used with an MSD 6, 7 or 8-Series Ignition
  • Red

  • MSD Ignition 85551 Details

    Chevy

    This popular MSD distributor is ready for high RPM race track performance. The housing is CNC-machined for exact tolerances from 6061-T6 billet aluminum. A .500" steel shaft is supported by a sealed ball bearing and a long sintered bushing for high rpm stability.

    Features:
  • Easy-to-adjust mechanical advance with supplied springs and stop bushings
  • Mechanical advance assembly can be locked out for crank trigger systems
  • Special oil tract improves lubrication to the distributor and cam gear
  • O-ring seals can be added to modified blocks to improve oil pressure control
  • Supplied with an HEI style distributor cap and rotor (accepts Cap-A-Dapts)
  • Will not accept a vacuum advance canister
  • Must be used with MSD 6, 7 or 8-Series Ignition

    Note: Not legal for sale or use on pollution-controlled vehicles.

  • Specifications:

    Engine Make/Size
    Chevy Big Block (396-454)
    Engine Make/Size
    Chevy Small Block (262-400)
    Advance Type
    Mechanical
    Ignition Box Required
    Yes
    Housing Material
    billet aluminum
    Quantity
    Sold individually
    Housing Finish
    Natural
    Slip Collar
    No
    Trigger Style
    Magnetic
    Computer-Controlled Compatible
    No
    Marine Use
    No
    Cap Style
    Male/HEI
    Distributor Gear Rotation
    Standard
    Mechanical Tach Drive
    No
    Gear Material
    Iron
    Distributor Type
    HEI/Breakerless
    Distributor Cap Color
    Red
    Manufacturer's Part Number:
    85551
    Shipping Weight:
    5.31
    Package Height:
    17.8
    Package Depth:
    7.1
    Package Width:
    7.1

    No Matter Your Vehicle, MSD Has the Best Distributor for It

    Billet and Pro-Billet share the same features except the base. Billet models have Dupont Rynite glass-reinforced bases; MSD Ignition Pro-Billet models have aluminum bases.

    Billet Aluminum Housings made in CNC mills form flawless flex-free components that are accurate to within .001" without weak spots or porosity.

    Maintenance-Free Magnetic Pickups trigger MSD ignitions (except crank trigger models). Mounted to the distributor base, the pickup plugs directly into an MSD ignition control & a trigger signal is produced as the shaft-mounted zinc-plated reluctor passes by.

    Shaft & Ball Bearing Guides: MSD polished steel distributor shafts receive a QPQ coating that reduces friction and resists corrosion. Each shaft is guided accurately by a sealed ball bearing located at the top of the housing. At the bottom, an extra long sintered bushing controls the shaft. This combination spins smoothly and delivers consistent sparks even in a 10,000 RPM racing environment.

    Adjustable Mechanical Advance: MSD's adjustable mechanical advance assembly allows accurate modification of the advance curve to match a specific application. The advance plate is stamped and machined from chrome moly, weight pins are staked then TIG welded, and both receive a corrosion-resistant QPQ coating. Nylon bushings are installed to ensure smooth weight movement as centrifugal force advances the timing. The advance assembly is mounted on top of the distributor for easy-to-access adjustment. Three sets of advance springs and four stop bushings are included to set up 24 curves.

    Pro-Billet Ready-to-Run Distributors are ideal upgrades for outdated and/or bulky systems, and they couldn't be simpler: drop one in, connect three wires, and fire up the engine. They come equipped with a gray tach output wire which will trigger a tach or an aftermarket EFI system. Also included is an adjustable Rev Limiter. Their ignition module creates a powerful inductive spark that improves fuel mixture combustion for quick starts, smooth idle, and great performance.

    Compatibility: Except Ready-to-Run and OE models, MSD distributors require an MSD ignition control.

    JEGS Easy Kits are designed by JEGS professionals so you get all the parts you need. Featuring MSD components, Ready-to-Run Ignition Kits include: Pro-Billet Ready-to-Run Distributor, Blaster 2 Coil, Super Conductor 8.5mm Spark Plug Wires, Coil Wire & Spark Plug Wire Separators.

    Does MSD Ignition 85551 fit your vehicle?

    Narrow Results
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    Aspiration

    1975-1979 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: SCOTTSDALE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977-1979 CHEVROLET IMPALA

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976 CHEVROLET MALIBU

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: CLASSIC ESTATE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1985 GMC K1500 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: SIERRA CLASSIC
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1980 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • Aspiration: N
    • SubModel: SCOTTSDALE
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976 GMC JIMMY

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1980 CHEVROLET CAPRICE

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: CLASSIC SPORT
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1978-1982 GMC JIMMY

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: STREET COUPE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 CHEVROLET IMPALA

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976-1978 CHEVROLET MALIBU

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: CLASSIC LANDAU
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1979 CHEVROLET G20 VAN

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: CHEVY VAN
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1980 GMC C2500 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: SIERRA CLASSIC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980 GMC K1500 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: SIERRA CLASSIC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976 CHEVROLET MALIBU

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1985 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: SCOTTSDALE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1982 GMC JIMMY

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: SIERRA GRANDE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 CHEVROLET CAPRICE

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: CLASSIC SPORT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978 GMC K15 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1976-1978 GMC G35/G3500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: MAGNAVAN
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977 CHEVROLET IMPALA

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: CUSTOM
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975-1980 GMC K1500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: SIERRA GRANDE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977 CHEVROLET MALIBU

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: CLASSIC SPORT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1982 CHEVROLET G20 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: CHEVY VAN
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 GMC C2500 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: SIERRA CLASSIC
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1978 GMC K25 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: HIGH SIERRA
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1979 CHEVROLET EL CAMINO

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • EngineType: ALL
    • SubModel: SS

    1976 CHEVROLET MALIBU

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: CLASSIC LANDAU
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1976 CHEVROLET MALIBU

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977 CHEVROLET K30 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: CHEYENNE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1978-1979 GMC JIMMY

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: STREET COUPE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980-1981 CHEVROLET CORVETTE

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976 CHEVROLET MALIBU

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: CLASSIC
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1978 GMC K15 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: SIERRA CLASSIC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1983-1984 GMC G35/G3500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: RALLY CUSTOM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1986 GMC C2500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: SIERRA CLASSIC
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1981-1982 CHEVROLET IMPALA

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: ESTATE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1984-1986 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: SCOTTSDALE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 CHEVROLET C10 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: CHEYENNE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1976 GMC K1500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979-1980 CHEVROLET MALIBU

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: ESTATE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1978-1979 CHEVROLET G20 VAN

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: NOMAD
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975 GMC SPRINT

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: CLASSIC
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1977-1978 CHEVROLET CAMARO

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: LT RALLY SPORT
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1979-1986 GMC C2500 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976 CHEVROLET NOVA

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • EngineType: ALL
    • SubModel: SS

    1976-1978 GMC K25 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: HIGH SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1981 CHEVROLET C20 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: DELUXE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1986 CHEVROLET MONTE CARLO

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: LS
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1980 CHEVROLET K20 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: SILVERADO
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1980-1986 CHEVROLET EL CAMINO

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: SS
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1977 CHEVROLET MALIBU

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: CLASSIC SPORT
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1976 CHEVROLET MALIBU

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: CLASSIC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1978 GMC K25 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: SIERRA CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979 CHEVROLET MONZA

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: S
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1980-1981 CHEVROLET K30 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: CHEYENNE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1978 GMC K15 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976 CHEVROLET MONTE CARLO

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: S
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976 CHEVROLET IMPALA

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: CUSTOM
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1986 CHEVROLET EL CAMINO

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975 CHEVROLET MALIBU

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1981 CHEVROLET C10 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: DELUXE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1980 CHEVROLET G30 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • EngineType: ALL
    • SubModel: CHEVY VAN

    1977-1978 GMC K15 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: SIERRA GRANDE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1986-1988 GMC G35/G3500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: RALLY CUSTOM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982-1986 GMC C2500 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: HIGH SIERRA
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1977-1979 CHEVROLET IMPALA

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: LANDAU
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982-1983 CHEVROLET K10 SUBURBAN

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: SILVERADO
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1981-1986 CHEVROLET C20 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1981 CHEVROLET C10 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: CHEYENNE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975-1978 GMC C25/C2500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1977 GMC K25 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: BASE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979-1980 GMC K1500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: SIERRA GRANDE
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1981-1986 CHEVROLET G10 VAN

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: CHEVY VAN
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1979-1980 GMC G25/G2500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: VANDURA
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1979 CHEVROLET MALIBU

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: POLICE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1978-1981 CHEVROLET G20 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: NOMAD
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975 GMC SPRINT

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: CLASSIC
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1977 CHEVROLET C30 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: CUSTOM DELUXE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981-1986 CHEVROLET C30 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1982-1983 CHEVROLET CAMARO

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: Z28
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1978 CHEVROLET C30 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1984 GMC G15/G1500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: RALLY CUSTOM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1985 CHEVROLET K20 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975-1978 GMC C35/C3500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 7.4
    • SubModel: HIGH SIERRA
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1977 GMC C15 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 CHEVROLET IMPALA

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: SPORT
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978 GMC K25 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: SIERRA CLASSIC
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1981-1986 CHEVROLET C20 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977 CHEVROLET MONTE CARLO

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • EngineType: ALL
    • SubModel: S

    1985 CHEVROLET K20 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: SILVERADO
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1978-1980 CHEVROLET G20 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 6.6
    • SubModel: NOMAD
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1983 CHEVROLET G10 VAN

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1979-1980 CHEVROLET MALIBU

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: CLASSIC SPORT
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975 CHEVROLET MALIBU

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • Aspiration: N
    • SubModel: CLASSIC
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1978 GMC K25 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: SIERRA GRANDE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1979 CHEVROLET C10 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: BIG TEN
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1978 CHEVROLET MONZA

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: S
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1981-1986 CHEVROLET K30 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.7
    • SubModel: CUSTOM
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978 GMC K15 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: SIERRA CLASSIC
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1978-1979 CHEVROLET C30 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution Controlled Vehicles
    • Liter: 5.0
    • SubModel: SILVERADO
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )
    85551 is rated 5.0 out of 5 by 9.
    Rated 5 out of 5 by from The Best Cannot go wrong with MSD quality and ease to change the curve. I am a repeat customer and will always rely on MSD to be my ignition of choice.
    Date published: 2018-04-09
    Rated 5 out of 5 by from great product perfect fit for the perfect price love it works wonderful
    Date published: 2016-10-17
    Rated 5 out of 5 by from Perfect I bought for my msd 6al 2 programmable. Work very nice.
    Date published: 2016-06-03
    Rated 5 out of 5 by from Awesome Always awesome products from msd. Easy to install and looks great.
    Date published: 2016-03-24
    Rated 5 out of 5 by from I needed to lock timing for nitrous , very easy to set up. Like it to be able to change back to advance if need to.
    Date published: 2015-09-04
    Rated 5 out of 5 by from #1 for parts I've ordered from several places,none as good as Jegs
    Date published: 2015-06-23
    Rated 5 out of 5 by from te best of the best mechanical timing //// so many options ....space shuttle quality
    Date published: 2014-11-03
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    Hi which msd distributor will work the best for a chevy V8 454 that will talk happily with a fit tech 30012 1200hp system ? thanks

    Asked by: dodg1e
    This would work, but you will need an ignition box to use with this distributor.
    Answered by: Rusty B
    Date published: 2018-04-02

    I am using a comp cam roller cam that requires a melonized iron distributor gear. Is the gear that comes installed on part# 121-85551 msd distributor compatible with my cam?

    Asked by: Elky468
    Thank you for your question. MSD 85551 Gear would have to be changed for your cam. http://www.jegs.com/i/MSD-Ignition/121/8561/10002/-1 That is the Melonized gear.
    Answered by: Seth W
    Date published: 2018-01-12
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    Items You Need
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    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.