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***Buick 350 Alum Heads Update***

Discussion in 'Small Block Tech' started by sean Buick 76, Apr 6, 2016.

  1. 72gs4spd

    72gs4spd Well-Known Member

    A question I just thought I’d throw out here. What are the opinions of spark plug indexing and positioning of the electrode? I spoke to a few people and the consensus is have the ground strap where it attaches to the plug point either to the exhaust valve or the top of the cylinder.
     
  2. Max Damage

    Max Damage I'm working on it!

    I don't think this matters. Too many other more important variables. This sounds like voodoo to me.
     
  3. 72gs4spd

    72gs4spd Well-Known Member

    From what I’ve researched it will make some difference. How much depends on the head design. My machinist said it does make a difference but it’s a waste of time in a stock motor because the increase in power is only a few percent. The pro stock motors he built would see an additional 10-20 horsepower. Only thing is he passed before we could discuss this further.
     
  4. hugger

    hugger Well-Known Member

    Waste of time
     
    Fox's Den and Mark Demko like this.
  5. Fox's Den

    Fox's Den 355X

    put on a nitrous kit you'll notice that
     
    Max Damage, Mart and 72gs4spd like this.
  6. Brian Pryes

    Brian Pryes Well-Known Member

    Plug Indexing
    My Dad did that in the 70's, claimed it was good for 5-10 hp.

    I'm Still not doing it ,lol.
     
  7. Fox's Den

    Fox's Den 355X

    Every time I tried it i had a misfire so I canned that idea. This is where you have to decide whether you want an extended plug or one that is not. I used the non extended plug when I ran the nitrous.
     
    Dadrider and Mark Demko like this.

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