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68 Cj5 Holley Super Sniper Tbi 2gc Or Howell Tbi

Discussion in 'Early CJ5 and CJ6 Tech' started by Phillykaiser79, Jan 13, 2021.

  1. Jan 13, 2021
    Phillykaiser79

    Phillykaiser79 New Member

    Lincoln University
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    Hi all just wanted to get some thought back on swapping out the old Rochester 2G carb on my 68 CJ5 225 w/ headers.
    just wanted to see if there are any reviews on either the Holley Super Sniper 2G Master Kit or the Howell
    #HB225 225 CID Buick TBI Kit? Both kits seem pretty straight forward to install just wanted to get some feedback from the group, then decide which way to go.


    Greatly appreciate all the advice, help & info ......

    I'm just a chef trying to work on my old jeep and make her more of a regular driver and get it ready for some 4wheeling down the road.
     
  2. Jan 13, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    Searching @Warloch comes to mind I know he's posted experience on 3 or more oddfires and has one he likes.
     
  3. Jan 13, 2021
    Rich M.

    Rich M. Shoe salesman 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Maryland
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    I'd use Howell due to them using commonly available GM parts.
     
  4. Jan 13, 2021
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Pullman, WA
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    Norcal69 just put a Howell on his Dauntless and has a long thread for the whole process: Howell Odd Fire V6 Fuel Injection Kit Install. He seems fairly happy with out after getting it dialed in. No matter what unit you go with, you would likely be better off with a crank sensor to eliminate the odd-fire's uneven tach signal.

    Me personally, I lean towards the Holley because it uses a wide-band O2 sensor, is user tunable, has self tuning, and has built in data logging. With the Howell, if it needs tuning, you have to send the chip and a description of your issues back to Howell, or buy additional GM ECU tuning software/hardware to do it yourself.

    That said, I haven't heard of anybody on the forum who's used the Holly 2G Sniper yet.
     
  5. Jan 13, 2021
    Steve's 70-5

    Steve's 70-5 Active Member

    Louisville, Ky
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    I think if you go with the Howell you will need a 4 barrel manifold for the TB.

    The Holley Sniper 2 G will work on the 2 barrel manifold no change there. The Sniper will not read the tach signal from the distributor, so you will need to put a crank sensor on to read the RPM.

    What ever you use, you will need a HEI distributor.

    I am using the FiTech EFI. They say there system will read a HEI tach signal (square wave). Will be a little bit before I get my system up and running.
     
  6. Jan 14, 2021
    jeepdaddy2000

    jeepdaddy2000 Active Member

    Eagle Point oregon
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    A couple of quick questions....
    What don't you like about your 2G?
    Is the issue worth the expense of a fuel injection upgrade?
    Not trying to dissuade you, just asking if the cost/effort is worth it.
     
  7. Jan 14, 2021
    jwinsley

    jwinsley Windblown

    Chattanooga
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  8. Feb 16, 2021
    71CJ54WD

    71CJ54WD Sponsor

    DC
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    [​IMG]

    I think its only proper that we post a picture of this beauty.
     
  9. Feb 16, 2021
    givemethewillys

    givemethewillys Been here since sparky ran it. 2022 Sponsor

    New Kent, VA
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    That's a nice looking bit of kit!
     
  10. Feb 16, 2021
    durangotang

    durangotang Member 2022 Sponsor

    Not Western CO
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    Not that it's the same application... but I did a 2bbl Sniper install on a Wagoneer with an AMC 360 and it has worked beautifully from day 1. No complaints whatsoever.
     
    Rich M. likes this.
  11. Feb 24, 2021
    truckee4x4

    truckee4x4 Grant Kaye 2023 Sponsor 2022 Sponsor

    Truckee CA
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    @Steve's 70-5 what FiTech did you end up with?

    I am about to dive into putting a Holley Sniper EFI on my freshly rebuilt 1966 Dauntless, I will start a thread when I get going on it in a few weeks.
     
    Fireball likes this.
  12. Feb 24, 2021
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
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  13. Feb 24, 2021
    truckee4x4

    truckee4x4 Grant Kaye 2023 Sponsor 2022 Sponsor

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    That is the one I am looking at, but I realize I will need an RPM signal from either the (-) on the coil or from a separate ignition box, at least that's what I was told when I spoke with Holley this am. They do not offer a Sniper HEI for the Buick V6 oddfire. So I am also looking at what options would work for that - anyone else gone down this road?
     
    Last edited: Feb 24, 2021
  14. Feb 24, 2021
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

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    Does the HEI distributor make an even tach signal?
     
  15. Feb 24, 2021
    SoCalNickG

    SoCalNickG Member 2023 Sponsor 2022 Sponsor

    Whittier, CA.
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    For my education with no intention of going EFI, what is involved with installing a 'crank trigger' or 'crank sensor'?
     
  16. Feb 24, 2021
    truckee4x4

    truckee4x4 Grant Kaye 2023 Sponsor 2022 Sponsor

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    I will have a chance at beer o’clock today to have a good detailed conversation about these issues with a mechanic friend who has done EFIs into late 60s engines before and will report back later
     
  17. Feb 24, 2021
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
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    No, but the thing is Holley admitted to me that they had actually never tried this on an odd fire engine so they told anyone that asked no, just cause they never tried it.
     
    timgr and truckee4x4 like this.
  18. Feb 24, 2021
    truckee4x4

    truckee4x4 Grant Kaye 2023 Sponsor 2022 Sponsor

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    I'm trying to learn about this too. I *think* that one would have to CNC machine a ferrous-steel toothed disc that attaches to the outside of the harmonic balancer/pulley and then mount something like this somewhere where the sensor tip would be 0.040" from the toothed disc.

    Question for those who have balanced a crank before (I have not) - wouldn't adding such a toothed disk need to be done at time of engine assembly in order for proper balancing?

    Crank Sensor:
    Holley EFI 554-124 Crankshaft Sensor

    Install Directions:
    https://documents.holley.com/199r10800rev2.pdf

    Pic from a customer who installed @ Summit:
    -Holley-554-124-2016511113013272.jpg

    A shop in Reno that does one--off laser cutting:
    Online Laser cut metals and plastics - Instant Quotes - Free Shipping
     
  19. Feb 24, 2021
    truckee4x4

    truckee4x4 Grant Kaye 2023 Sponsor 2022 Sponsor

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    Last edited: Feb 24, 2021
  20. Feb 24, 2021
    Howard Eisenhauer

    Howard Eisenhauer Administrator Staff Member

    Tantallon, Nova...
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    For a fuel injection setup you would need 3 evenly spaced pulses for each crank rotation. I don't think relation to TDC would matter.
     
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