question on 3885069 L72 manifolds.

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  • Bill S.
    Expired
    • January 31, 2007
    • 396
    #1

    question on 3885069 L72 manifolds.

    the early L72 (427/425 hp) intakes are 3 holers and later 66 and up are 2. why did GM make the change and what was the result? bill
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