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Johan's

1979 Lincoln Mark V

Base 400/6.6L V8

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Build Points

26

  • Color: Yellow
  • Horsepower: 170
  • Drivetrain: RWD

Completed Modifications

Fuel System (1)

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Comments

  • Patrick

    03/13/2022
    hey nice ride . I have a 78 mark v with the 400 as well and just had the sniper system installed . How do you like it? any tricks or tune info you can share ?
    • Hi Patrik I installed this last summer and tried some own tuning. As I´m quite new on that I ended up in start from scratch and relied on self tuning. I have only altered the AFR for more Lean operation. Idle 15.0, Cruise 15.5 and WOT 13.5. Running really good after warm up. I have removed all exhaust emission control systems except Cats. (California car). I had problem with stalling and raw idle on cold engine. Now I have also installed the dual sync system and everything runs a lot better.
    • Hello Johan. I am thinking about doing the same thing to my 78' with the same drivetrain. Can you tell me what all you needed to change/remove as far as emissions or other equipment? What are you using for an air cleaner? What about the fuel vapor capture system/charcoal canisters? It's been a few years now. Still running as you like? Anything you would change or do differently? How did you handle the fuel return?
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  • Robert

    06/23/2025
    Hello Johan. I pretty much have the same comment/question that Matt posted. 2nding Matt, I am thinking about doing the same thing to my 78' with the same drivetrain. Can you tell me what all you needed to change/remove as far as emissions or other equipment? What are you using for an air cleaner? What about the fuel vapor capture system/charcoal canisters? It's been a few years now. Still running as you like? Anything you would change or do differently? How did you handle the fuel return?
    • Continuting my response...I am going to skip the fuel return and instead use the Edelbrock Fuel Sump to supply the Sniper 2. I will be removing the Thermactor pump and associated valves as well as a lot of vacuum lines and installing the O2 sensor in the exhaust between the manifold and the catalytic converter on the passenger side of the car. I will replace the PCV intake with a stand alone type in the valve cover since I won't be using the stock air cleaner.
    Show 1 Reply

  • Matt

    08/07/2025
    Hi Robert. Given the improvements Holley made to the Sniper 2 over the Sniper, I have decided to go that way instead. They don't make a 2 bbl version of the Sniper 2, so I am going to replace the intake manifold with an Edelbrock Performer. I intend to keep the EGR, so I will be adding the needed spacer for that and keeping the vacuum operated EGR valve and PVS. I am going to use the Holley Sniper air cleaner. For the ignition I am going to use the Hyperspark system for the 400.
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