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No stupid questions

This is a discussion on No stupid questions within the General Help forums, part of the LSx Technical Help Section category; I have been told that there are no stupid questions just stupid answers. However, I feel stupid asking these ones: ...

  1. #1
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    No stupid questions

    I have been told that there are no stupid questions just stupid answers. However, I feel stupid asking these ones:

    I have a 95 SFI 3.4 litre that is going to be rebuilt, naturally aspirated. I have some ideas of how to do this along with some new part numbers, but am confused regarding the current heads on it.

    They have the injectors, I won't be useing them so:
    a. do I need to change to heads without injectors;
    b. can I remove them and run it as is; (not likley);
    c. do I plug the injector ports with something?

    Again new to rebuilding, just enough knowledge to be dangerous!


  2. #2
    Senior Member bigrondownhiller's Avatar
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    Quote Originally Posted by sunbeam39 View Post
    I have been told that there are no stupid questions just stupid answers. However, I feel stupid asking these ones:

    I have a 95 SFI 3.4 litre that is going to be rebuilt, naturally aspirated. I have some ideas of how to do this along with some new part numbers, but am confused regarding the current heads on it.

    They have the injectors, I won't be useing them so:
    a. do I need to change to heads without injectors;
    b. can I remove them and run it as is; (not likley);
    c. do I plug the injector ports with something?

    Again new to rebuilding, just enough knowledge to be dangerous!

    are you using a carb?

  3. #3
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    Yes, quoted the following, from Edelbrok and Jegs tech services. This setup is used on the 3.4 build of the Stalker V6 roadster. I asked them the same question but havn't received an answer yet:


    Holley 0-8007 390 cfm 4 brl @ $400
    Edelbrock 3789 @$115
    3785 @$189.95
    2112 @$140 special order
    9737 @$70 special order

  4. #4
    Senior Member bigrondownhiller's Avatar
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    the stock FI manifold wont work that well. It is designed to move air only. If you use a carb on it, I dont think it will work that great. Do they make a carb version of the manifold? the kit car guys are always using fwd gm engines in cars. I would check some sites out to see what people have done.

  5. #5
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    Manifold

    Edelbrok makes a two piece manifold part#'s
    350-3785 Manifold base
    350-3789 Top
    510-0-8007K 390 cmf Carb Kit
    Cam 3790


  6. #6
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    http://www.stalkerv6.com

    These cars use either the 2.8, 3.1 or 3.4 most are naturally aspirated small cars that go fast!!

  7. #7
    Senior Member bigrondownhiller's Avatar
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    you dont need the injectors then. I guess you are running a distributer too?

  8. #8
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    Exactly

    Correct, no injectors, hence what do I do with the holes the injectors leave when I take them out?

    Need some injectors?

  9. #9
    Senior Member Orcus79's Avatar
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    If you are moving from injectors to a carb (i don't know why you would though) You need to get a new intake that is built for a carb, thus elimintaing the injector ports. The injectors do not interact with the heads at all beside spraying fuel at the intake valve. Your good to go.

  10. #10
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    No computer

    I am resto-customizing a 1960 Sunbeam Alpine, and will not be putting a computer in it run the FI, also with the cam, manifold, carb, nitrous set up I have planned, I will run about 250-280 HP + or - on a 1850 lb street car. Do the math, it'll go fast enough for me!

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