It's a great day, no more POS Sniper!

Discussion in 'Tech Discussion' started by SquareRoot, Oct 24, 2018.

  1. MikeB

    MikeB Full Access Member

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    A friend of mine has been running an FiTech Go Street 600 EFI system only a pretty hot 383 for around 3 years now. We had some initial teething problems -- the one I remember was an inconsistent idle -- but the FiTech support guys always came through. Never had an outright failure though. What's really cool is the engine starts after cranking for only 1-2 seconds, and you can take off immediately even on very cold days.
     
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  2. WHEELMAN

    WHEELMAN Full Access Member

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  3. WHEELMAN

    WHEELMAN Full Access Member

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    I do not know why any one would even.install a Holly on anything.they never run or work right.you spend your time wrenching.edlebrock.650 or a 600 electric choke and drive on.
     
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  4. Matt69olds

    Matt69olds Member

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    Nothing can beat the fine tuning ability of a Holley. The race carbs have screw in air bleeds, different style boosters, enough that you can really get lost changing things if you don’t know what your doing. The Edelbrock carbs are better and easier if you just want to bolt it on and go
     
  5. SquareRoot

    SquareRoot Full Access Member

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    Adding electronics to the equation changes things. Your no longer comparing apples to apples. Holley has a history and reputation for carburetors; not so much for EFI in my opinion. Like I said originally, I bolted on an Edelbrock Pro-flo system 15 years ago and it ran perfect for 10 years until I retired it. I'm convinced that using OEM parts (like the Pro-flo) makes a difference in quality. They invest more time and money in research/development and reliabilty testing than any aftermarket company will ever be able to afford. Holley should recall these pieces of junk until they make a product that's worth what they are charging for it.
     
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  6. Backfoot100

    Backfoot100 Junior Member

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    Agreed. Holleys are fantastic carbs.

    Not sure if any of you have tried one yet but Quick Fuel carbs are basic Holley design with added standard goodies that make for an even better carb IMHO.
    Billet throttle bodies and metering blocks/plates, external adjustable floats and vacuum secondaries, adjustable screw in air bleeds, etc. Good stuff and even a little cheaper than a new Holley.
     
  7. MikeB

    MikeB Full Access Member

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    I agree. I have rebuilt and tuned many Edelbrock carbs (the ones loosely based on the Carter AFB). Even bought and sold them on eBay for awhile. They are great for guys who don't want to mess with carbs beyond setting idle mixture and speed. However, even the most basic Holley carbs can be fined tuned for perfect transition from idle to moderate throttle to wide open throttle using various pump nozzles. pump cams, and power valves.

    About new Edelbrock carbs working right out of the box: I've found they tend to stumble just a little right off idle, and can benefit from more initial spark advance. Also, every last one of them that I've worked with has had heat soak (hot start) problems, which I think is caused by 10% ethanol fuel boiling out of the float bowls. The float bowls essential sit right on the hot intake manifold, unlike Holley float bowls which are surrounded by air. Back in the heyday of the AFB, and even when Edelbrock started making the carbs (in the 80s?), there was no ethanol in gasoline, so I doubt there was a heat soak problem. By the way, a phenolic or wood spacer will help the problem a little, but not solve it 100%.

    Just found this article about Edelbrock heat soak. Some good ways to at least partially cure the problem.
    http://www.edelblog.com/tech-tips/resolving-heat-soak

    Finally, kudos to Edelbrock for having a very nice owners manual. I have used their calibration charts with great success when living at altitudes from 600 ft to 9000 ft.
    https://www.edelbrock.com/pub/media/wysiwyg/documents/carb-owners-manual.pdf
     
    Last edited: Nov 9, 2018
  8. MikeB

    MikeB Full Access Member

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    I'm not sure if they include any electronics, but Holley has been supplying EFI throttle bodies to NASCAR since 2012.

    I wonder if the OP's problems could be due to grounding? I have learned that for trunk mounted batteries, you still need to run the battery negative terminal to the engine block. I have seen this reduce voltage drop to ignition, lights, etc. by more than 1 volt. Also, it's common to have resistance between frame, block, and body grounds. I go overboard with ground straps, and like to use washers like this to cut into the metal.

    [​IMG]
     
    Last edited: Nov 13, 2018 at 10:38 AM
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  9. 4WDKC

    4WDKC Full Access Member

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    I have a holley commander 950 efi system that is from the late 90s on my vette since 2012, it doesnt have any issues and have not had to replace any parts. Its not as fancy as the newer stuff with auto tuning but it works and will go on my truck when I upgrade the vette to the HP system for the bigger TBI .
     
  10. Sublime

    Sublime Full Access Member

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    ya, electronics - NO thanks, just call me analog man!
     
  11. bucket

    bucket Super Moderator Staff Member

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    Besides supplying the Nascar teams now, Holley supplied throttle bodies as OE for some vehicles back in the 80's too.
     
  12. Paladin

    Paladin Full Access Member

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    Amen! I'll drink to that! :cheers:
     
  13. 77 K20

    77 K20 Full Access Member

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    Although Edelbrock really screwed up on their E-street throttle body EFI setup. They are not as tunable as they would want you to believe. Their first try wasn't that good, then they came out with a second revision. Then they cancelled it.

    I'm running the first version and have had issues with it. And their support has sucked.

    Heat soak, hunting for idle, a failed O2 sensor, and the inability to idle at 650 RPM are just some of the issues.

    There are things I like about it too though. And I'm probably going to be dumb enough to convert to their pro flo system in a year or two. It will solve my cold weather issues (being a dry manifold instead of a wet manifold)
     
  14. MikeB

    MikeB Full Access Member

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    I forgot about those early systems. There's a been an EFI section for 15+ years on one of forums I belong to. And the Admin is (or was) a Holley Engineer.
     
  15. 4WDKC

    4WDKC Full Access Member

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    Chevytalk.org? its been really slow on that forum for awhile, Danny or Doug was on there and another guy wrote auto tuning software for that system and was selling it for like $15. There is a Facebook group for Holley EFI now, I assume thats where they all hang out now.
     

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