valley pans on a 440

Discussion in 'Mopar Performance Issues' started by OiiiiiiO, Oct 26, 2018.

  1. OiiiiiiO

    OiiiiiiO senior member

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    i had a 440 built and the valley pan is two piece. I suspect there's a vacuum leak. installed a aroespace vacuum pump and it doesn't appear to be working. I use eddy performer heads. is there a one piece pan that might cure my ills?? thanks
     
  2. SGBARRACUDA

    SGBARRACUDA ROY FABO Gold Member

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    I've used the two piece pans. Unless it is under your intake, I don't think that is your problem. Are you using paper gaskets on the intake? Test fit the intake on the heads. It may be that the heads are cut or intake and that is your leak.
     
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    • AndyF

      AndyF Well-Known Member

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      I built billet valley pans. The AR182A with the AR392 batwing gasket holders would work for that application. I designed them for Trick Flow heads but they'll work with the Edelbrock heads as long as you are using a single plane intake.

      Valley Plates | AR Engineering