Shelby Drop Question

Discussion in 'Technical' started by silver70, Jan 30, 2012.

  1. silver70

    silver70 Eric

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    So... I made a fairly accurate template at work out of 1/4" plate and was double-checking my measurements after all the holes were drilled. 17/32" for the existing mounting holes and 1/8" pilot/starter holes for the re-location. The problem is the plate must have slipped in the drill-press because the 1/8" pilot hole is off approximately 1/64", even after prick-punching the hole's location before starting. So, instead of being exactly 1" from existing to the new location, it's 1-1/64". Maybe not even that much. This was all done using hand layout. Every other measurement is dead-on.

    My question: How critical is this measurement/mistake? I figure, because it's dealing with wheel alignment, it's important. At the same time, I wonder how accurate Ford's bolt-hole locations were coming off the factory line in the '70's and that maybe it's not that critical.

    Advice?

    Eric
     
    silver70, Jan 30, 2012
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  2. mercgt73

    mercgt73 Member Supporting Member

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    You are fine.
     
    mercgt73, Jan 30, 2012
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  3. Streamliner

    Streamliner Member

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    That's close enough for government work:thumbs2:
     
    Streamliner, Jan 31, 2012
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  4. 71gold

    71gold Frank Cooper Supporting Member

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    don't be so hard on yourself...no need for name calling...
     
    71gold, Jan 31, 2012
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  5. courier11sec

    courier11sec Member

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    ^^ Haha.
    OP, you should be fine. any difference can be adjusted out when you align the car easily.
     
    courier11sec, Jan 31, 2012
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  6. silver70

    silver70 Eric

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    K. Thanks guys. Just needed some positive reinforcement. Catastrophic fruitions averted. :whew: However, I still am kind of curious about how accurate Ford's layout points were back in the 60's and 70's for all their various mounting points.

    Eric
     
    silver70, Feb 1, 2012
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  7. injectedmav

    injectedmav Member

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    Even if they were dead on 40 years ago, years of use and abuse would have "loosened" those tolerances up a bit by now. I think you'll be fine.:tiphat:
     
    injectedmav, Feb 2, 2012
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