EFI 383 LS1 Liberator - IT LIVES!
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EFI 383 LS1 Liberator - IT LIVES!

  1. #1
    Head Janitor FormulaZR's Avatar
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    Default EFI 383 LS1 Liberator - IT LIVES!

    So...after several months of hard work and late nights my EFI conversion is finally done. Got the tune on it last night, and made it to the lake in time to start it up. Didn't do anything else because of "prior committments". Also added mufflers and lots of other little odds and ends that it needed.

    The original thread for the LS swap (it was carbed the first time around) is here: http://<a href="http://www.performan...-done.html</a>


    Updated videos:








    Not sure why it's so quiet in this vid, because even though it has mufflers it still pretty loud.










    Last edited by FormulaZR; 05-21-2013 at 08:36 PM.


    "No, my boat doesn't need any more power" - No one ever

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    Member ocelot's Avatar
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    Nice! what brand is exhaust?

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    Head Janitor FormulaZR's Avatar
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    Quote Originally Posted by ocelot View Post
    Nice! what brand is exhaust?

    The headers are Rewarder, the mufflers are Gibson bullets. I don't know yet how they've affected horsepower - but there is a definite sound difference.


    "No, my boat doesn't need any more power" - No one ever

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    AKA OhOneWS6 Last Mohican's Avatar
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    Very nice. The boat looks much better in these pics. James Glastron with the LS is pretty quiet too. Without it being up on plane I'm assuming the tips are below the water line. That males it much quieter as well.

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    21 Daytona Outlaw's Avatar
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    Nice project
    I have a deck boat I want to add a jet and Newer LS small block to
    Looks like a good combo
    Last edited by Outlaw; 07-02-2012 at 08:03 AM.
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    Head Janitor FormulaZR's Avatar
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    Quote Originally Posted by Last Mohican View Post
    Very nice. The boat looks much better in these pics. James Glastron with the LS is pretty quiet too. Without it being up on plane I'm assuming the tips are below the water line. That males it much quieter as well.
    It was pretty loud and gnarly with the old tips...these Gibson's really do change the tone and overall dB.


    Quote Originally Posted by Outlaw View Post
    Nice project
    I have a deck boat I want to add a jet and Newer LS small block to
    Looks like a good combo
    Do it!


    "No, my boat doesn't need any more power" - No one ever

  9. #7
    LP-25.com Infomaniac's Avatar
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    Way cool man.
    If For Some Reason I Do Something Worthy Of Recognition. God Provided The Ability And Deserves The Credit.


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    (borat voice) NIIIIIIICE. I need to get off my azz and get one of these in my barge. Or just let you finish and then buy yours.
    Do you still have that big cam in there or did you swap something else for EFI? what are the details on the ECU, just stock GM that was tuned by hptuners or ? What are you doing for o2 sensor with water injected headers (referring to tuning, I assume you are going open loop program once tune is dialed).
    Eagerly awaiting RPM and speed data with EFI vs carb vs old motor...

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    Head Janitor FormulaZR's Avatar
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    Ran the boat on the 4th. Had hoped to get a video...but it just didn't work out. Anyway, it ran great... No speed/RPM data yet, there were kids in the boat; plus the lake was shallow and crowded (and not a lake I'm familiar with). Maybe next weekend? At least the Check Engine Light didn't come on...so that was a small victory (yes, it really does have a working Check Engine Light).


    Slim: To answer your questions: it still has the same cam (238/244 @ .050; .600/.600 lift; 113 LSA). The ECU is a GM "0411" PCM (from 99+ LS powered vehicles - F-body, Vette, Truck, Tahoe, etc). Also, no O2 sensors - this engine is set up exactly as it was in my car...which had extensive dyno tuning; so I was able to utilize that info for this tune.






    Last edited by FormulaZR; 07-09-2012 at 04:44 PM.


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    cool combo... did it have a motor before? how'd it do on gas?

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    AKA OhOneWS6 Last Mohican's Avatar
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    Cool you got it on the water for the 4th. What lake is that?

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    Head Janitor FormulaZR's Avatar
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    Quote Originally Posted by ka0tyk View Post
    cool combo... did it have a motor before? how'd it do on gas?
    It had a stock 454 BBC when I bought the boat a couple years ago. I put the LS1 (with a carb) in it within a few months of ownership due to the BBC throwing a rod (odd, since it was a fresh rebuilt and never revved over 5,000 RPM). I just finished the EFI conversion.

    I haven't filled it back up to know exact fuel consumption, but when I do I'll let ya know.



    Quote Originally Posted by Last Mohican View Post
    Cool you got it on the water for the 4th. What lake is that?
    Thanks! I was glad to get it done in time. First start with EFI was Sunday 7/1; and then I hauled it 500 miles to hope it would run well on the lake - very glad it did. It's Lake Brownwood, near Brownwood, TX. The lake is SUPER low - 55% capacity or so; many docks not even near the water. There are still several deep, safe spots to boat - but in the pictures with the bimini up, the water is no deeper than 4 feet all the way to the shore in the background.


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    21 Daytona Outlaw's Avatar
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    Quote Originally Posted by FormulaZR View Post
    Ran the boat on the 4th. Had hoped to get a video...but it just didn't work out. Anyway, it ran great... No speed/RPM data yet, there were kids in the boat; plus the lake was shallow and crowded (and not a lake I'm familiar with). Maybe next weekend? At least the Check Engine Light didn't come on...so that was a small victory (yes, it really does have a working Check Engine Light).


    Slim: To answer your questions: it still has the same cam (238/244 @ .050; .600/.600 lift; 113 LSA). The ECU is a GM "0411" PCM (from 99+ LS powered vehicles - F-body, Vette, Truck, Tahoe, etc). Also, no O2 sensors - this engine is set up exactly as it was in my car...which had extensive dyno tuning; so I was able to utilize that info for this tune.







    can not see pics, private folder
    #55

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    Head Janitor FormulaZR's Avatar
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    Pics should be working now...I think Photobucket had a problem for a little while.



    As a side note - the flappers did not last long. They were on the boat when I put it in the water...and nowhere to be found when I put it back on the trailer...
    Last edited by FormulaZR; 07-10-2012 at 02:40 PM.


    "No, my boat doesn't need any more power" - No one ever

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