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Wheel pattern size

Discussion in 'A Body: Duster, Valiant, Dart, etc' started by moparjimh, Feb 25, 2019.

  1. moparjimh

    moparjimh New Member

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    On a 69 Valiant, what is the wheel pattern size(6 cly).
    Thanks
     
  2. valiant67

    valiant67 ...

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    5x4", doesn't matter 6 cylinder or V8, disc or drum brakes. All A bodies used that bolt pattern (except the Hemi ones) until sometime around 1972 or so, when disc brake A bodies went to the 5x4.5" bolt circle and the drum brake cars stayed with 5x4"
     
  3. moparjimh

    moparjimh New Member

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    Thanks Thats what I thought too, friend says other wise. I get a Twinkie for that.
     
  4. Adventurer55

    Adventurer55 Well-Known Member

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    Disc brakes on a 1972 Demon 340 were 5x4 as well. So it had to be after that.
     
  5. CudaPete

    Level 2 Supporter

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    Yes, all A-body 8.75 axles are 5 x 4. They started useing E-body disc brakes in 73 with 5 x 4,5 pattern.
     
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  6. voiceofstl

    voiceofstl Well-Known Member

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    Are the new charger and 300 the same pattern as the 70's C bodys?
     
  7. valiant67

    valiant67 ...

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    No. Some people consider them "close enough" and use them. To each their own, but I would not run them.
    The old C and B body cars were 4x4.5" which is the same as 5x114.3 mm.
    The new L based cars are 5x115 mm.
     
  8. GLHS60

    GLHS60 Well-Known Member

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    The older Intrepid type 300's were 114.3 which is 4.5"

    It seems the metric "part namers" had more authority than the inchers!!

    Thanks
    Randy
     
  9. Bearhawke

    Bearhawke Things happen for a reason

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    Especially being several later model Japanese cars also have the 5 x 4.5" (114.3 MM) bolt pattern. Note that hub diameters, width of rim as well as offsets can vary...........a lot but still.
     
  10. GLHS60

    GLHS60 Well-Known Member

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    Somehow, I can't picture Chrysler Engineers discussing an ideal bolt circle and coming up with 114.3 mm.

    I'm positive they converted 4.5" to mm for some other reason.

    Thanks
    Randy
     
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  11. Bearhawke

    Bearhawke Things happen for a reason

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    Probably for the same reason that many of the traditional Detroit Three plus AMC manufacturers changed over from SAE to metric numbers when discussing the 318=5.2L, Chevy 350=5.7L, etc, never mind that most of the fasteners on those engines were still USS/SAE threads till the end.
     

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