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  1. 351W Exhaust manifold misalignment to head

    Factory Five Roadsters
    Hi Everyone, I am looking for some advise or help here please. Stock ish heads well regarding the part we are talking about and FFR supplier Hooker headers. As you can see from the images both side have been leaking. The machined edge of the manifold is lining up too low on heads and thus...
  2. 351W headers for LS swap???

    Chevy (or any other non-Ford) Motor Builds
    I have been debating trying to fit a set of FFR 351 headers to my new ls3. I know the port spacing is identical so an ls flange could be welded on easily. Has anyone tried this approach? I can't find any external dimensions (exhaust port to exhaust port width across the motor, or the exhaust...