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cross-fire changeover-possible?

Discussion in 'The Hokey Ass Message Board' started by JOECOOL, Jul 10, 2007.

  1. JOECOOL
    Joined: Jan 13, 2004
    Posts: 2,769

    JOECOOL
    Member

    Has anyone took the 80's crossfire intake from a Camaro or whatever and put carbs on it ? Maybe 4 x 2bbls would work. I have one that was given me ,I don't think they worked very well when they were injection.
    I am only going for a look as the engine is a stocker. Thanks
     
  2. 1950ChevySuburban
    Joined: Dec 20, 2006
    Posts: 6,185

    1950ChevySuburban
    Member Emeritus
    from Tucson AZ

    Those intakes were **** with injection. Is it metal? If so, I don't see why not. If its plastic, its trash.
     
  3. evltwin
    Joined: May 11, 2006
    Posts: 73

    evltwin
    Member
    from Milford MI

    I have heard the design and size of the runners in that intake are not good. The runners have sharp turns and the size is matched for a smaller 305.
     
  4. squirrel
    Joined: Sep 23, 2004
    Posts: 59,931

    squirrel
    Member

    You could probably make a plate to put two 4bbls on it, but don't expect it to run very well. The top plate unbolts, so it wouldn't be real difficult. Might run into trouble having enough room to put two 4bbls on it because it only had 1bbl throttle bodies.
     
  5. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,681

    Bruce Lancaster
    Member Emeritus

    I jumped on the first detached one I saw, long ago, to check out the possibility of turning it into a Smokey Ram...alas, the box contained garbage.
    I don't remember the exact layout, but ports were highly constricted in a way that made modification to full head port size nearly impossible.
     
  6. 50flathead
    Joined: Mar 8, 2005
    Posts: 1,169

    50flathead
    Member
    from Iowa, USA

    I can't see why you couldn't do it. It would look pretty cl***y but I wouldn't expect big power.
     
  7. tomslik
    Joined: Mar 3, 2001
    Posts: 2,161

    tomslik
    Member

    how about 2 rochester 2bbls?
     
  8. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,681

    Bruce Lancaster
    Member Emeritus

    The problem isn't what to put on top, it's that you can only use about half the port area of the cylinder head!
     
  9. 1950ChevySuburban
    Joined: Dec 20, 2006
    Posts: 6,185

    1950ChevySuburban
    Member Emeritus
    from Tucson AZ

    I think you just found a nice dual ashtray unit there.
     
  10. Zerk
    Joined: May 26, 2005
    Posts: 1,418

    Zerk
    Member

  11. Unkl Ian
    Joined: Mar 29, 2001
    Posts: 13,509

    Unkl Ian

    Probably work well on a 283,or mild 305/307,in a light car.

    They were throttle body injection,before port injection was offered.
     
  12. Sawracer
    Joined: Jul 6, 2006
    Posts: 1,315

    Sawracer
    Member
    from socal

    Gas is gas, Sure it would work. Set it up, Do some back to back dyno pulls and get back to us. Just kidding. But seriously, It probably can't run much better or worse than the grossly over or under carbureted setups I have seen on a lot of retro tech rods. While I am poking fun at others I'll add I plan to double the carburetion on my A when I know damn well one does the trick just fine. But alas I want an interesting cool looking car. Hence the second carb. Your cross fire setup will certainly be unique at most shows you go to which is half the point right?
     
  13. crowerglide
    Joined: Aug 31, 2006
    Posts: 201

    crowerglide
    Member
    from Tyler, TX

    I had one of the '84 Corvettes with the C/F on it. Never had any kind of problems with it. Ran great, and the crossfire deal gives it a fairly nasty sounding idle, compared to the TPI. I believe both the C/F and the TPI were originally designed around the 305, and at the last minute they decided to go with the 350 in the Vette. My daughter's first car was a worn out '82 Z-28 Camaro with the 305 and crossfire. It was a POS from one end to the other. About the only thing I didn't have trouble with were the throttle body injectors.
     
  14. True till Death
    Joined: Mar 1, 2006
    Posts: 123

    True till Death
    Member

    i have an 82 camaro z28 with cross fire. i never had a problem with it and alot of people that heard /saw it said it was the best running /sounding cross fire they have seen. if anyone wants pic to get an idea for the changeover let me know.
     
  15. Brad54
    Joined: Apr 15, 2004
    Posts: 6,022

    Brad54
    Member
    from Atl Ga

    I've got one of those. Several years ago, we made a top plate for it and mounted a pair of Holley 500cfm 2bbls on it. Never mounted it to an engine, but it looks pretty good.
    Be a fun intake to put on a 283.
    -Brad
     
  16. Why not run the Crossfire with its throttle bodies ? It's my understanding that the only drawback to those things was the computer....and that can be improved by subs***uting a later model one from a Chevy pickup, early 90's ? Because of the long, small runners you can expect good low-end torque and quick throttle response. Very driveable. :)

    That's what I'm doing..... :eek:
     

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  17. JOECOOL
    Joined: Jan 13, 2004
    Posts: 2,769

    JOECOOL
    Member

    Thanks all ,It's going on a 100,000 mile 305 in my little lite modified so performance is not a big issue. I have some two bbl. carbs and will try that. The F.I. sounds good but I don't want to change the fuel pump ect. I'll let you know how it comes out ,so far I have $0 invested.
     

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