Spark Plug

Discussion in 'Race 400/430/455' started by BuickRacer69, Apr 28, 2020.

  1. BuickRacer69

    BuickRacer69 1320, Mark of the Beast

    What sparks plugs is everyone running?

    I have a 464, 10.25 to 1, solid flat tappet cam, iron headed street strip car. I am going to put it on E85, in my LS stuff I always run NGK. What is everyone having luck with?
     
  2. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

  3. Swagon

    Swagon Well-Known Member

    no reason to put it on E85 with that compression. Im sure the cam is big enough to bleed off pressure, you would be better off with regular pump. you can start to have a cylinder wash issue with e85.
     
  4. BuickRacer69

    BuickRacer69 1320, Mark of the Beast

    I said street/strip, but it is really a race car with a license plate. I can put 200+ passes a year on my street car a year. Thanks for the plug suggestion, I am an NGK fan, and those will probably be a good head range to start with.

    That is also why I want to put it on E85, it is EFI so the AFR should be good and not damage the cylinders, and I won't have to add race car or pull timing at the race track. It is also much more consistent for bracket racing which is what I mostly do.
     
  5. Utah455

    Utah455 Platinum Level Contributor

    Hey Larry, I just installed NGK 6630 UR4 versions I picked up from Autozone...Its a 76 block with 72 heads that's been worked over (by previous owner) no clue what was done, but the cam was hopped up. There were original Bosch HR9BP's in there.
     
  6. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    UR-4 is the stock plug, like an R45TS. The UR-5 and 6 are colder heat ranges of that plug.
     
  7. Utah455

    Utah455 Platinum Level Contributor

    Ok, thanks. the motor had R44’s in it when I got it and were all black.
     
  8. Briz

    Briz Founders Club Member

    I use E3 cause Britney Force used them and says there the best, and shes hot, so thats good enough for me!
     
  9. HotRodRivi

    HotRodRivi Tomahawks sighted overseas

    What are E3 plugs? I looked on line . you get that good flame kernal. With that diamond fire. Sounds spiffy.
     
    Last edited: Jun 14, 2020
  10. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    A waste of money.
     
  11. Briz

    Briz Founders Club Member

    They were 1/2 the cost of the Iridium plugs that
    kept breaking and seem to do the same job + I stand by my statement about Britney Force!
     
  12. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    She is hot, I'll give you that.:)
     
    Last edited: Jun 15, 2020
    Briz likes this.

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