Rear Spoiler Mounting '71

Discussion in 'The Bench' started by hwprouty, Oct 9, 2018.

  1. hwprouty

    hwprouty Gold Level Contributor

    Does any one have a photo of the under side of a trunk lid with the holes for mounting the spoiler ?
    I have drilled the holes to 7/8" as per Georges website, but there is no way to get the backing plates in there?!
    I think I read somewhere that the GS's used a much bigger hole?
    I only want to drill holes once!!
  2. copperheadgs1

    copperheadgs1 copperheadgs1

    The trunk lids are all the same.
    hwprouty likes this.
  3. Smartin

    Smartin Staff Member

    I’m pretty sure the holes in the 72 X I’m working has bigger than 7/8” holes to get those plates in. I’ll try to remember to measure them tonight when I get home.
    hwprouty likes this.
  4. 2001ws6

    2001ws6 last of the v8 interceptors

    A friend of mine took a few pics off a GSX, Not sure if it was the real deal or not. But, here are the pics he sent me.




  5. hugger

    hugger Well-Known Member

    70 lids are different than 71/72, the X used the 71/72 style with the "boxed" area with the dimples on where to drill. I guess the lids used after the X's were built in 70 were the boxed style too, never paid much attention to be honest
  6. Duane

    Duane Member

    The 68-72 trunk lids went like this,
    68-early 70 were the same and then,
    mid 70-72 were the same.

    And this was across all the GM brands, not just Buicks. They were used in 68-72 Chevelles, 70-72 Monte Carlos, and 70-72 Skylarks.

    The GSX cars had large holes drilled into the bottom of the trunk lid so the braces could slide in....and the center point of the hole would have been where the dimples were.

    Early trunk lids have the inside bracing closer to the outside skin and have no dimples.

    If you drilled a 7/8" hole were the dimples were then you might be able to put a 7/8" hole saw (or plug) in the middle as a guide with the bigger hole saw around it. That would keep the hole centered.
  7. hwprouty

    hwprouty Gold Level Contributor

    Gotcha. Thanks for the reply.
    Any idea what size I should make the 'bigger' hole? Just big enough to slide the backing plates in?
  8. hwprouty

    hwprouty Gold Level Contributor

    Thanks! Thats a big help!
    Looks like they didn't have any large hole saws!?
  9. hwprouty

    hwprouty Gold Level Contributor

    I would appreciate that!
    I would also appreciate it if you would take on the painting of this Skylark, your work is FANTASTIC!!
  10. Smartin

    Smartin Staff Member

    Thanks! I have a wait list of a little over 2 years...

    The holes measure 1 9/16 or so..

    Attached Files:

  11. hwprouty

    hwprouty Gold Level Contributor

    That's perfect! Thanks for the pics!

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