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Best CAMSHAFT BBC FAST EZ-EFI 2.0??

Discussion in 'FAST Support Forum' started by Cronies74, May 31, 2016.

  1. Cronies74

    Cronies74 New Member

    Joined:
    May 31, 2016
    IMG_0388.JPG Got the dyno results today. Didn't hit the 600 goal but close enough I'd say. Should be an awesome setup with plenty of power and torque for this Chevelle. Now we just need to get her mounted and get the body painted and put back on the chassis. It's going to be a while until that's all done but I can't wait!! Thx for all the great tips!!
     
    Last edited: Oct 6, 2016
  2. Cronies74

    Cronies74 New Member

    Joined:
    May 31, 2016
    IMG_0211.JPG This is the 502 partially assembled. I can post more when it's in the chassis
     
    Last edited: Oct 6, 2016
  3. Cronies74

    Cronies74 New Member

    Joined:
    May 31, 2016
    RenderedContent-2589A9D8-116A-4B7B-83E4-CADAEC680D45.JPG Chassis pic 1
     
    Last edited: Oct 6, 2016
  4. Cronies74

    Cronies74 New Member

    Joined:
    May 31, 2016
    RenderedContent-E806A40C-9732-4F1D-8F7A-0350D82CADB0.JPG Chassis pic 2
     
  5. Cronies74

    Cronies74 New Member

    Joined:
    May 31, 2016
    Last one :) RenderedContent-48AAD398-2C34-4F32-AE78-3B12022091E3.JPG
     
  6. A A

    A A Well-Known Member

    Joined:
    Jun 22, 2014
    Sweet! Nice pictures. 562 horsepower is right in the range I figured you would make. You could try a 1" spacer on the intake, but I doubt there would be much improvement. Your torque also looks great. Once all together, you'll have one sweet ground stomping Chevelle. :D
     
  7. A A

    A A Well-Known Member

    Joined:
    Jun 22, 2014
    One thing, The oil pressure looked off a little to me at 5700. You may have some cavitation at the pump or some high RPM timing shake. If you don't have an oil pan baffle/crank scraper, you need one. An added oil pressure container will also help prevent cavitation. On the other hand, you don't need to rev that high.
     
  8. Les Duncan

    Les Duncan Member

    Joined:
    Oct 5, 2014
     
  9. Les Duncan

    Les Duncan Member

    Joined:
    Oct 5, 2014
    You would have avoided all kinds of logistical probs with Fast EFI by going LS3 500 HP no problem and no tuning issues
    right out of the box........Ask me why I know?????. You are embarking on an odyssey of lost $$$$$$$ and heartache.
    You are just trying to reinvent the wheel with an electronic carb.
     
  10. TurboNova

    TurboNova Active Member

    Joined:
    Jan 30, 2009
    Location:
    Lake Havasu City AZ.. but mostly travel tuning
    EFI does not need at least 10" of vac to work properly it only needs that if you are using a Self Learning ECU... if it is a sportsman XFI or XFI 2.0 then you can use any cam you want to.
     
  11. Cronies74

    Cronies74 New Member

    Joined:
    May 31, 2016
    RenderedContent-C5F9C85D-1F37-4879-9827-AA4129CC8853.JPG Update- engine, trans, headers, core support, and driveshaft are in. Body getting extreme makeover- new floor pan, quarter panels, etc. She was a 47 yr old basket case of rust and bad body repairs.
    So I'm just wrapping up what I can before they take my chassis from me.
    I'm about to run the fuel lines next.
    FAST instructions say 3/8" ID is good so I'm on the fence about going with -6AN (.36 ID) or -8AN (.43) tube size since -6AN isn't quite .375" (probably not a big deal with just a .015" difference).
    Will run hard line most of the way with a few feet on each end.
    I'm leaning towards -6AN hose + fittings and 3/8" hardline. Any problems with that combo?
     
  12. A A

    A A Well-Known Member

    Joined:
    Jun 22, 2014
    3/8" and 6AN to 8AN is usually fine up to 600 horsepower. Above that level really needs 1/2" and 8AN or larger as the horsepower increases. You don't want to see a line pressure drop on the engine at full throttle. The need for larger lines increases with lower pressure carbureted systems.
     
  13. Cronies74

    Cronies74 New Member

    Joined:
    May 31, 2016
    Thx AA. Will go ahead and stick with the 3/8" -6AN for this one. Last little project until I hand it over to body shop. It will be a full car soon I hope.
     
  14. Iowa

    Iowa Member

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    Jul 1, 2014
     
  15. Iowa

    Iowa Member

    Joined:
    Jul 1, 2014
    Yep that's why the ls motors are in street outlaws. O wait there all big blocks. Ls motors are not making that much at the rear wheels without some help and the chassis dyno is the only way to tune a motor
     
  16. A A

    A A Well-Known Member

    Joined:
    Jun 22, 2014
    Only one thing missing in this thread... Pictures of the finished Chevelle!

    I can visualize some big sticky tires applying some asphalt chewing 500 horsepower to the pavement!
     

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