exhaust manifolds

Discussion in 'Technical' started by fredee, Feb 11, 2006.

  1. fredee

    fredee Member

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    Location:
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    Vehicle:
    1971 comet
    Was looking at a set of factory exhaust manifolds off a 74 302 maverick, why are some bolt mounting holes larger than others? The majority of them are larger than 3/8.
     

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