Exhaust manifold on N* 4.6

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Northstar Engines and System Technical Discussion Discussion, Exhaust manifold on N* 4.6 in Cadillac Engine Discussion; I hear rumour that you "must" put spreaders between the ports on the exhaust manifold or they are extremely difficult ...
  1. #1
    SeekerFor is offline Cadillac Owners Member
    Join Date
    Jun 2005

    Exhaust manifold on N* 4.6

    I hear rumour that you "must" put spreaders between the ports on the exhaust manifold or they are extremely difficult to get back on as the metal bows in.
    Does anyone know anything on this? Can you make spreaders out of small turnbuckles?
    Also, years ago when they started using aluminum blocks and heads they had problems with leaking headgaskets and we learned a little trick to stop it.
    In my tractor trilers I also ran into a problem similiar to the corrision of the headgaskets and we found a trick to solve it. I feel pretty good that both these techniques will work on the N* 4.6 will apply them when I put it back together.

    I'll keep you posted and share the tech's once I have proven they work or do not work. Perhaps through team work the situation can be resolved.

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  3. #2
    CADDYBLACK99 is offline Cadillac Owners Connoisseur
    Automobile(s): 2006 STS-4 1999 Deville Concours
    Join Date
    Oct 2003

    Re: Exhaust manifold on N* 4.6

    Welcome SeekerFor!

    Thanks for joining the forum. I'm going to redirect this post to the NorthStar section for better response! Good luck!


  4. #3
    eldorado1 is offline Cadillac Owners Connoisseur
    Join Date
    Feb 2004

    Re: Exhaust manifold on N* 4.6

    The exhaust manifolds bolt on as easy as anything else..... Don't quite know what you're referring to.

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