GM B-Body Forum, 77-79 Caprice/Impala Forum

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GM B-Body Forum, 77-79 Caprice/Impala Forum

Join Now If Your A 1977- 1979 Caprice or Impala owner or other GM B-Body owner!!!
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GM B-Body Forum, 77-79 Caprice/Impala Forum

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GM B-Body Forum, 77-79 Caprice/Impala Forum

A forum for the owners and enthusiasts of General Motors B-Bodies from 1977-1990, but dedicated to the owners of 1977-1979 Impalas and Caprices. Join up now!


2 posters

    1979 Caprice Differential Size

    Carcrazed
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    Carcrazed
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    • Post n°1

    1979 Caprice Differential Size Empty 1979 Caprice Differential Size

    Post  Carcrazed Tue May 09, 2023 6:32 pm

    It's me again. Just going to upgrade my internals of my differential to a posi. I was shocked that my Caprice has a 7 1/2 ring gear??? My family has owned this car since new so I know it hasn't been changed and it came stock with the 350/350. I thought that size differential normally came in the 6-250 application? Just curious.
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    slimwud
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    1979 Caprice Differential Size Empty Re: 1979 Caprice Differential Size

    Post  slimwud Sat Sep 02, 2023 10:13 pm

    My 78 coupe also had the 7.5. Swapped whole rear for 94 caprice. Then got axles for 5x4.75 lug pattern and later added a trutrac also went to 3.73 rear gear
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