speedway cast manifolds

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  • a1driver
    Senior Member
    • May 2007
    • 227

    #1

    speedway cast manifolds

    anybody have any experience with the speedway motors cast iron exhaust manifolds?
  • archie142
    Junior Member
    • Mar 2010
    • 17

    #2
    TruRam

    We ran them and where extremely impressed with them. Our track opened rules and now on headers. Very litlle noticeable difference. JMO

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