stock rocker arm ratio for buick 455

Discussion in 'Buick FAQ' started by 72stage2, Jan 28, 2014.

  1. 72stage2

    72stage2 Well-Known Member

    Hey guys Im getting conflicting info on stock rocker ratio for a bbb 455. trying to pick a new cam. going to run stock rockers. is the ratio the same for 70 to 76. I have a set of 72s and 74s. any help. thanks Kirk
     
  2. Jim Weise

    Jim Weise EFI/DIS 482

    70-76 is more or less 1.55.. the alum rockers have slightly more ratio than the stamped steels, but nothing to worry about.

    JW
     
  3. 72stage2

    72stage2 Well-Known Member

    that clears things up. thanks JW
     

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