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Mallory Mechanical Advance Unilite Distributor Small Block Chevy / Big Block Chevy

650-3748201

made in usa

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Mallory 3748201
$325.95
Mechanical Advance Unilite Distributor
  • Small Block Chevy
  • Big Block Chevy
  • With Built-in Electronic Ignition Module
  • Red
  • Free Shipping - Ships directly from the manufacturer on 02/25/20
    Save $20 on $250, $50 on $500, $100 on $1,000 Orders. Promo Code: CHARGER exclusions apply
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    1977  CHEVROLET C10

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: U
    • CUI: 305

    1972  CHEVROLET CAMARO

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350

    1977  CHEVROLET C20

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: R
    • CUI: 400

    1973  GMC K25/K2500 PICKUP

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350

    1973  CHEVROLET LAGUNA

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 454

    1974  CHEVROLET MALIBU

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CLASSIC
    • Engine Vin: T
    • CUI: 350

    1983  GMC K1500

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350

    1968  CHEVROLET CHEVELLE

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: 300 DELUXE
    • Engine Vin: -
    • CUI: 307

    1972  CHEVROLET BROOKWOOD

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: S
    • CUI: 402

    1977  CHEVROLET G20

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SPORTVAN
    • Engine Vin: R
    • CUI: 400

    1973  CHEVROLET LAGUNA

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: ESTATE
    • Engine Vin: H
    • CUI: 350

    1974  CHEVROLET IMPALA

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350

    1966  CHEVROLET CAPRICE

    • Liter: 4.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 283

    1969  GMC K15/K1500 PICKUP

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 350

    1973  CHEVROLET LAGUNA

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: ESTATE
    • Engine Vin: H
    • CUI: 350

    1973  CHEVROLET CHEVELLE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: DELUXE
    • Engine Vin: K
    • CUI: 350

    1969  CHEVROLET C10 PICKUP

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350

    1983  GMC K3500

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: M
    • CUI: 350

    1969  CHEVROLET C20 SUBURBAN

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 307

    1972  CHEVROLET BISCAYNE

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 454

    1968  CHEVROLET CHEVELLE

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: 300
    • Engine Vin: ME
    • CUI: 307

    1972  CHEVROLET C10 SUBURBAN

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 307

    1977  CHEVROLET K20

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: R
    • CUI: 400

    1973  CHEVROLET LAGUNA

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: ESTATE
    • Engine Vin: Y
    • CUI: 454

    1986  CHEVROLET K5 BLAZER

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: L
    • CUI: 350

    1970  GMC K25/K2500 PICKUP

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: A
    • CUI: 307

    1971  CHEVROLET K20 SUBURBAN

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 350

    1966  CHEVROLET IMPALA

    • Liter: 4.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SS
    • Engine Vin: -
    • CUI: 283

    1970  GMC K35/K3500 PICKUP

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 402

    1970  GMC C25/C2500 PICKUP

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: A
    • CUI: 307

    1972  CHEVROLET CAMARO

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SS
    • Engine Vin: L
    • CUI: 350

    1986  CHEVROLET C10 SUBURBAN

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: L
    • CUI: 350

    1973  CHEVROLET CHEVELLE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: DELUXE
    • Engine Vin: K
    • CUI: 350

    1970  CHEVROLET C30 PICKUP

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 402

    1976  GMC K25

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 400

    1975  CHEVROLET K20 SUBURBAN

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: Y
    • CUI: 350

    1975  CHEVROLET G10

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BEAUVILLE
    • Engine Vin: V
    • CUI: 350

    1986  CHEVROLET K10 SUBURBAN

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: L
    • CUI: 350

    1977  CHEVROLET CORVETTE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350

    1972  CHEVROLET C20 PICKUP

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 307

    1976  CHEVROLET IMPALA

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SPORT
    • Engine Vin: V
    • CUI: 350

    1973  CHEVROLET C10 SUBURBAN

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 350

    1984  CHEVROLET G10

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BEAUVILLE
    • Engine Vin: F
    • CUI: 305

    1972  CHEVROLET C20 SUBURBAN

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 402

    1977  CHEVROLET K30

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: S
    • CUI: 454

    1974  CHEVROLET G10 VAN

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350

    1969  GMC C25/C2500 PICKUP

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 307

    1968  GMC K15/K1500 PICKUP

    • Liter: 5.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 327

    1983  CHEVROLET C20

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: H
    • CUI: 305

    1986  CHEVROLET K5 BLAZER

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: H
    • CUI: 305

    1970  GMC K25/K2500 PICKUP

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: B
    • CUI: 307

    1973  CHEVROLET EL CAMINO

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SS
    • Engine Vin: Y
    • CUI: 454

    1973  CHEVROLET MALIBU

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: ESTATE
    • Engine Vin: H
    • CUI: 350

    1981  CHEVROLET C10

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: H
    • CUI: 305

    1974  CHEVROLET LAGUNA

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 400

    1969  CHEVROLET C30 PICKUP

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350

    1973  CHEVROLET MALIBU

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: ESTATE
    • Engine Vin: F
    • CUI: 307

    1972  CHEVROLET CHEVELLE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350

    1971  CHEVROLET C10 PICKUP

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: H
    • CUI: 307

    1972  GMC K25/K2500 PICKUP

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: J
    • CUI: 350

    1972  CHEVROLET KINGSWOOD

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 400

    1986  CHEVROLET C20 SUBURBAN

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: L
    • CUI: 350

    1968  CHEVROLET CHEVELLE

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SS
    • Engine Vin: -
    • CUI: 307

    1975  CHEVROLET K20 SUBURBAN

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: M
    • CUI: 400

    1973  GMC C15/C1500 PICKUP

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Z
    • CUI: 454

    1976  CHEVROLET MONTE CARLO

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: LANDAU
    • Engine Vin: U
    • CUI: 400

    1975  CHEVROLET G30

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BEAUVILLE
    • Engine Vin: Z
    • CUI: 454

    1978  BUICK CENTURY

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SPECIAL
    • Engine Vin: U
    • CUI: 305

    1976  CHEVROLET MALIBU

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CLASSIC ESTATE
    • Engine Vin: V
    • CUI: 350

    1977  CHEVROLET K10 SUBURBAN

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: U
    • CUI: 305

    1977  OLDSMOBILE OMEGA

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: F85
    • Engine Vin: U
    • CUI: 305

    1972  CHEVROLET CAMARO

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 307

    1976  CHEVROLET K20

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: S
    • CUI: 454

    1968  CHEVROLET G20 VAN

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 307

    1973  CHEVROLET C20 PICKUP

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: X
    • CUI: 307

    1969  CHEVROLET K20 PICKUP

    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 396

    1970  CHEVROLET KINGSWOOD

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: ESTATE
    • Engine Vin: -
    • CUI: 400

    1975  GMC C25

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350

    1986  CHEVROLET K20 SUBURBAN

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: L
    • CUI: 350

    1972  CHEVROLET K20 SUBURBAN

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 307

    1985  CHEVROLET CAMARO

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: Z28
    • Engine Vin: H
    • CUI: 305

    1972  CHEVROLET EL CAMINO

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: R
    • CUI: 400

    1978  CHEVROLET MONTE CARLO

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SPORT
    • Engine Vin: U
    • CUI: 305

    1985  CHEVROLET CAMARO

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: IROC-Z
    • Engine Vin: H
    • CUI: 305

    1969  CHEVROLET BLAZER

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 307

    1973  CHEVROLET K20 PICKUP

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350

    1977  CHEVROLET CAMARO

    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 305

    1971  CHEVROLET C20 PICKUP

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: A
    • CUI: 350

    1979  CHEVROLET MALIBU

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CLASSIC LANDAU
    • Engine Vin: -
    • CUI: 350

    1972  CHEVROLET CAMARO

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350

    1977  CHEVROLET K5 BLAZER

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: L
    • CUI: 350

    1978  BUICK SKYLARK

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: L
    • CUI: 350

    1972  CHEVROLET EL CAMINO

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SS
    • Engine Vin: E
    • CUI: 400

    1972  CHEVROLET CHEVELLE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: J
    • CUI: 350

    1971  GMC K15/K1500 PICKUP

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: B
    • CUI: 350

    1976  CHEVROLET CAPRICE

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CLASSIC SPORT
    • Engine Vin: V
    • CUI: 350

    1986  CHEVROLET G30

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HI-CUBE
    • Engine Vin: M
    • CUI: 350

    1972  CHEVROLET K10 SUBURBAN

    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 402

    1974  CHEVROLET IMPALA

    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 454

    1969  GMC C25/C2500 PICKUP

    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    3748201 - Mallory Unilite Distributors is rated 5.0 out of 5 by 1.
    Rated 5 out of 5 by from great part easy install. THIS IS A TOP QUALITY PART AND IS EASY TO INSTALL. I HAVE USED THESE MANY TIMES.
    Date published: 2014-12-30
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    • clientName_jegs

    Are the shims under the plate and advance weights available ? ...advance springs? I've had my unilite since 1989, the advance assembly sticks full on and is worn out. Never restarts When its warm. Really do not want to buy a whole new distributor. Thnx

    Asked by: JacksonTang
    Those rebuild type parts are currently unavailable.
    Answered by: Rusty B
    Date published: 2018-08-27

    I need the cap and rotor for this distributor

    Asked by: Cameron james
    This is the cap part number - https://www.jegs.com/i/Mallory/650/209M/10002/-1 and rotor - https://www.jegs.com/i/Mallory/650/306M/10002/-1
    Answered by: Rusty B
    Date published: 2018-08-24

    Do you sell the electronic module separately? ours is damaged.

    Asked by: Cindy G
    Yes, we sell the module separately - https://www.jegs.com/i/Mallory/650/6100M/10002/-1
    Answered by: Rusty B
    Date published: 2018-06-26

    can I purchace the cap separatly?

    Asked by: studebaker 49
    Yes, this is a link to the cap - https://www.jegs.com/i/Mallory/650/209M/10002/-1
    Answered by: Rusty B
    Date published: 2018-08-24

     Can I block out the manual advance mechanism 

    Asked by: 55Chevytruck
    Yes, you can lock out the advance - check out this link - http://documents.msdperformance.com/frm34556_2572001_2572101_2527501.pdf
    Answered by: Rusty B
    Date published: 2018-06-08
    • y_2020, m_2, d_22, h_13CST
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    • clientName_jegs

    Items You Need

    Some parts are not legal for use in California or other states with similar laws / regulations

    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.