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What plugs are you running in your hipo?

Discussion in '1965-1970 Shelby Mustang GT350 & GT500' started by 56ace, Oct 1, 2006.

  1. Oct 1, 2006 #1
    56ace

    56ace Well-Known Member

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    I'm getting around to changing the plugs in 6s081 and went to the parts store to get new ones. Their book showed autolite 46 for all 289s which they did not have. They checked their AC/Delco application book and it showed R84TS for the 289 Hi-Po as a complete separate application for the rest of the 289s. I bought the R84TS and brought them home, but when I pulled the old plugs I found Autolite 33 plugs in there, and they were significantly different (threaded portion different in length) from the R84TS plugs. I then found some new plugs on the back of one of my shelves and they were Autolite 35. So what plugs are folks running out there? If I remember correctly, the Hipos were supposed to run hotter plugs than the standard 289s but it has been a while so I could be wrong.
    Thanks,
    Jay
     
    56ace, Oct 1, 2006
    56ace, Oct 1, 2006
    #1
  2. Oct 1, 2006 #2
    eljimb0

    eljimb0 Well-Known Member

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    The Hi-Po had Bf 32 the 4bbl and the 2bbl had Bf 42... IIRC the HiPo plug was actually one range colder than the standard one.. There were also metal core wires that went to the dizzy. Almost all plugs now have some kind of cabon (rf. noise suppression core) electrode in them. In this new millenium the radio is more important than the motor.. My 98 Ford van has 150,000 miles on the sparkplugs. New spark plugs and new ignition systems are profoundly better than the old stuff. My hipo has bf 32's not because they are better.. It is because I am nuts...:blink:
    jimbo
     
    eljimb0, Oct 1, 2006
    eljimb0, Oct 1, 2006
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  3. Oct 2, 2006 #3
    66shelbynz

    66shelbynz Well-Known Member

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    hi chaps - i also asked this question in a thread a little earlier. My '66 runs autolite AP45 . They were in it when i got it and it has never missed a beat but i looked into changing them when i took one out to check and saw that it was what appeared to be corroded around the centre electrode - but apparently being a platinum plug : that is what they are supposed to look like :doh: (don't worry -i'll keep to my day job keeping planes apart :thumbsup: )
    so AP45 platinum plugs work fine in my supercharged 289. cheers.
     
    66shelbynz, Oct 2, 2006
    66shelbynz, Oct 2, 2006
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  4. Oct 6, 2006 #4
    56ace

    56ace Well-Known Member

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    Thanks for the info guys. I threw the Autolite 35s in the car today and its runs great.
    eljimbo, after I thought about it, it makes sense the Hi-Pos actually ran a colder plug and just shows once again to not trust my memory;) I know this means I should have put 33s back in, but since I am not planning any track time for a while, I figured the 35s would do for now.

    Shelbynz,
    I did see your earlier post and to answer what plug other than autolite would work. The autolite box said Champion F11Y are equivalent plugs to the Autolite 35.
     
    56ace, Oct 6, 2006
    56ace, Oct 6, 2006
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  5. Oct 7, 2006 #5
    zrayr

    zrayr Well-Known Member

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    Been using Autolite APP45 double platinum plugs for several years now. No problems.

    Z.
    6s1117
     
    zrayr, Oct 7, 2006
    zrayr, Oct 7, 2006
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  6. Oct 13, 2006 #6
    Sandy Galbraith

    Sandy Galbraith Well-Known Member

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    You guys change change plugs!!!!!!!!!!:doh:
     
    Sandy Galbraith, Oct 13, 2006
    Sandy Galbraith, Oct 13, 2006
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  7. Mar 27, 2007 #7
    Rickman

    Rickman Member

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    Jay: I have a couple of sets of Autolite BF32's. They are right for 289 Hipo.
    I realize this post is old but if you are still in need or want the right thing here they are. They are right for 427's, 406's, and other Hipo Fords. :thumbup:
     
    Rickman, Mar 27, 2007
    Rickman, Mar 27, 2007
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  8. Mar 28, 2007 #8
    zrayr

    zrayr Well-Known Member

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    I also have plenty of BF-32's (for sale) but would like to find a nice set of the BF-32's with the star. Anybody want to part with a set?

    Z. Ray
    '66 GT-350
     
    zrayr, Mar 28, 2007
    zrayr, Mar 28, 2007
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