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Source for a multi carb Cadi intake for a 331

Discussion in 'The Hokey Ass Message Board' started by Lancer, Sep 14, 2008.

  1. Lancer
    Joined: Jan 11, 2004
    Posts: 1,346

    Lancer
    Member

    Is there a modern source for a multi carb manifold for the 331 cadi motors?

    Any carb bolt style will do.

    I have seen the Edmunds 2-2 set up. Did anyone produce anything with 4, 6, or 8 carbs?

    Thanks,

    Lance
     
  2. old4dlvr
    Joined: Oct 15, 2006
    Posts: 239

    old4dlvr
    Member

    Yes both Edelbrock and Wieand made 6x2 intakes. You could try a Wanted add on here or try Evil- Bay. I got my 6x2 of the bay. H
     
  3. Check out Evel's "Live Wire"
     
  4. 33chevy409
    Joined: Feb 10, 2008
    Posts: 21

    33chevy409
    Member
    from New Mexico

    Im not really up on Caddys but does a 331 and a 390 use the same manifold? I have a 4x2 Cragar manifold that fits a 390 I believe.
     
  5. Lancer
    Joined: Jan 11, 2004
    Posts: 1,346

    Lancer
    Member

    I dont know if the 331 and the 390 are the same, maybe someone can chime in and we can both learn.
     
  6. They interchange '49-'62
     
  7. jonnycola
    Joined: Oct 12, 2003
    Posts: 2,061

    jonnycola
    Member

    The ports are different sizes, though.
     
  8. Heads changed in '55, right?

    Nothing beyond what port-matching could correct, right?
     
  9. rodbuilder
    Joined: Oct 1, 2002
    Posts: 269

    rodbuilder
    Member

    I have the later 500 inch Caddy engine putting 6 Strombergs on it...can't find anything gonna make my own intake
     
  10. inMOtion
    Joined: Mar 27, 2008
    Posts: 29

    inMOtion
    Member
    from Deep South

  11. Dirty2
    Joined: Jun 13, 2004
    Posts: 8,902

    Dirty2
    Member

    Different ports but same intake gaskets 331 thru 390 .
     
  12. rodbuilder
    Joined: Oct 1, 2002
    Posts: 269

    rodbuilder
    Member

    thanks inmotion...that would have been a better way to go...I got over $600 in getting flanges wanter jet cut...damn, should have asked sooner...I have bought stuff from caddy500.com and were great to deal with.
     
  13. Wowcars
    Joined: May 10, 2001
    Posts: 1,027

    Wowcars
    Member

    I have a '63 390 (same as 472-500 ci motors) with an Offy 6x2 log style manifold. That was able to bolt up, just need longer runners to connect the ports from one side to the other. Non-log manifolds will not work, but I dont see why mine wont work if I go that route.
     
  14. rodbuilder
    Joined: Oct 1, 2002
    Posts: 269

    rodbuilder
    Member

    wowcars, you got any pics of that intake?
     
  15. inMOtion
    Joined: Mar 27, 2008
    Posts: 29

    inMOtion
    Member
    from Deep South

    The 331/390/429 engines are NOT the same family as the 368/425/472/500 family.

    The bore spacing on a Cad 390 is not the same as the 472/500 engine family, therefore the intake manifolds will not interchange. Internal parts don't interchange.

    Adaptor plates for varius 'other' brand manifolds have been made and sold. They all require a 'dog leg' in the airflow at the port interface with the head due to the dimensional difference of the engines bore center lines.

    Driveability and performance suffer .
     
    Last edited: Sep 16, 2008
  16. rodbuilder
    Joined: Oct 1, 2002
    Posts: 269

    rodbuilder
    Member

    I didn't think so but I would like to see one to kinda give me an idea on what to shoot for during fab work, gonna run one of those new Alt that looks like a gen and a look a like electronic magneto ......oooohhh aahhhhh
     
  17. 33chevy409
    Joined: Feb 10, 2008
    Posts: 21

    33chevy409
    Member
    from New Mexico

    Thanks for the info guys. Sorry if there was confusion about my manifold. Im gonna hold onto it since Ive recently found a good running 390 to put it on.
     

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