Gasket question

Discussion in 'Got gears?' started by CanadianBird, Jun 29, 2019.

  1. CanadianBird

    CanadianBird Silver Level contributor

    256B5813-754F-404B-9BE5-39E8BAF368AC.jpeg 5034043A-36FC-4384-99E8-5A6C571D184B.jpeg buick skylark 8.2 bop. This is the gasket I received fr my local parts store. When I look up application it says 67 buick skylark. Will this fit? Just different than what I have installed in the past.
  2. BrianTrick

    BrianTrick Brian Trick

    If the rear cover is still on,place it over the bolts,to see if the pattern is correct. The bolt pattern for an 8.5” has a different pattern. The 12:00 and 6:00 bolts are further apart,so that is usually and easy way to check a gasket or cover.
  3. buick64203

    buick64203 Just plum crazy Staff Member

    An RDS55028 fits and 8 1/2" diff. Pretty sure the 67's have an 8.2. Unless someone swapped rear in the car. Best bet would be to take a pic of what under the car .
  4. CanadianBird

    CanadianBird Silver Level contributor

    The cover on the diff is identical to the gasket that was on computer screen. So my diff is in effect an 8.2.
  5. BrianTrick

    BrianTrick Brian Trick

    Yes and no. Yes,you original gasket looks like the one on the screen,BUT the original 8.5 gaskets looked like that too. If you have the original rear under your 67,it is the 8.2”,and the new Felpro gasket will NOT fit.
  6. monzaz

    monzaz Jim

    8.2 BOP has a totally different bolt pattern than the 8.5 period.
    I have seen people oblong the holes to fit...BUT it is different.
    10 bolt 8.2 chevy and 8.5 corperate are the same 10 bolt pattern
    1964-1972 Pontiac id the cover gasket you want for your BUICK 8.2. Try that at the parts store.
    RDS 13410

    The 8.5 use to come in 2 different cover applications there was a 8.5 (will call it BOP 8.5 cover gasket) shaped just like the tempest pontiac 8.2 cover gasket but they only sell the CHEVY 8.2 / 8.5 gasket as you purchased RDS 55028-1
  7. CanadianBird

    CanadianBird Silver Level contributor

    Thanks Jim. All sorted out. They kept insisting that it was going to fit...till I gave him the part number. " Oh! I see what you mean."

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