8.5 rear end build for 550 hp

Discussion in 'Got gears?' started by lsSkylark, Sep 20, 2020.

  1. DasRottweiler

    DasRottweiler -BuickAddict-

    Yup, 71' 8.5 has bolt in axles.
    My posi carrier is an original cone style.
    Has carried my 3650lb Skylark to a best of 12.92 with a best 60' of 1.74 . My planned upgrades will not be enough to get me into rollcage times, 11.49 . The 28 splines will be fine running mid to low 12s, the carrier, not so much. I think if I were to upgrade to a 30 spline,
    I would go with Strange Axles.
    Last edited: Oct 8, 2020

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