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1967 side exhaust

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  • Rex T.
    Very Frequent User
    • December 1, 1984
    • 455

    1967 side exhaust

    I have a friend who has a 67 coupe with a 327-350 engine, same as mine, but the difference is in the side exhaust. His has the original 2 inch exh manifolds and mine have been replaced with 2.5 inch manifolds. Both have original GM side exh mufflers (mine are a little newer). The two cars sound quite different and his seems to have a little more power than mine (4.11 rear in his vs 3.70 in mine). Would you expect the 2 inch vs 2.5 inch to make that much difference in sound and performance?
    Thanks,
    Rex
  • Wayne K.
    Expired
    • December 1, 1999
    • 1030

    #2
    Re: 1967 side exhaust

    Rex,

    I don't know if the 2 1/2 inch manifolds would make a difference in sound but I do know the 4:11 gears would make a performance difference everything else being the same.

    Wayne

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