ZZ4 HEI w/Pertronix D72000

Discussion in 'Engine Topic' started by PHROG, Sep 14, 2021.

  1. PHROG

    PHROG New Member

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    Has anyone here tried a Pertronix D72000 in the OEM HEI used in the ZZ4?
     
  2. CorkyE

    CorkyE Veteran Member Lifetime Gold Member

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    I had one of those modules in a Mallory distributor (stock type), it went south in short order. YMMV
     
  3. Lowend

    Lowend Administrator. .a car, a man, a maraca. Staff Member Lifetime Gold Member

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    I'm not sure there's a lot of benefit to the module swap on that distributor.
    What are you trying to accomplish?
     
  4. PHROG

    PHROG New Member

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    Pertronix claims the module will give multiple spark at lower RPM like a CD box. Ultimate goal is the best possible fuel mileage in a 34 Chevy coupe that cruises at 2500 rpm/75 mph.
     
  5. Lowend

    Lowend Administrator. .a car, a man, a maraca. Staff Member Lifetime Gold Member

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    I seriously doubt you could do an effective multi-spark with a unit that small. Petronix is known for enthusiastic advertising on its ignition products.
    If I was doing an HEI build out - this is what I would use
    https://www.holley.com/products/ign...butor_accessories/conversion_kits/parts/85001
    The HEI's biggest weakness is heat buildup. Moving the coil off the cap deals with that.
    That said, for most street motor's a properly tuned HEI (with a good curve kit) is more than up to the task. You'll probably find more efficiency with dyno tuning than part-swapping
     
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  6. sandlapper

    sandlapper Veteran Member

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  7. Lowend

    Lowend Administrator. .a car, a man, a maraca. Staff Member Lifetime Gold Member

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    $12 solution to a $400 problem, I like it.
    We even have a coupon code for Rock

    5% Discount Code: 266E10C98D2D13
    Expires: December 12, 2021


    Please enter this code in the ‘How Did You Hear About Us’ box to receive the discount. Please enter ONLY the discount code, no other words or numbers. All orders are placed online and the discount code must be entered before an order is submitted to receive the discount.
     
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  8. biker

    biker Veteran Member

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    If I didn't live in the land of brokerage fees and half price money, I'd buy one of these today: https://progressionignition.com/
    Get the small cap one with separate coil, dial in your timing specs and go.
     
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  9. Lowend

    Lowend Administrator. .a car, a man, a maraca. Staff Member Lifetime Gold Member

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    oooohh I like that
     
  10. MChamp

    MChamp Veteran Member

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    Oh heck yeah, now that's what Santa needs!
     

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