Lord Baby Jesus Does Exist, and He Has Given Us the Chevrolet "LS12"

Phillip Thomas

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Dear Eight Pound, Six Ounce, Newborn Baby Jesus, don’t even know a word yet, just a little infant, so cuddly, but still omnipotent. We just thank you for all LS-powered V8 swaps you have brought us, but this right here is a second coming of greatness. 

Introduction video after the jump.

[vimeo]http://vimeo.com/65439073[/vimeo]

LS1Tech user V12Baker brings forth what will be one of the most unique Chevrolet LS-based motors ever made, a LS1-based V12. Essentially Siamese-ing two LS1 blocks, four LS1 heads, two LS1 cranks, two LS1 cams; you get the idea. He’s made a solid V12 out of two LS1 engines. The block, heads, and cam are welded into solid units while the crank is bolted together in the middle. It’s about 8.9L and is about 8.8 inches longer than the standard LS1. And yes, it will eventually get a blowah! 

It’s hard not to think about GMC’s old Twin-Six V12 engines from the 1960’s, which was essentially two GMC V6s end-to-end, casted into a solid block with a solid crank and cam, with four V6 heads, two V6 intake manifolds, etc. 

The cool thing is? The two lobbed off cylinders from each block go into a Motus KMV4-like LS1 V4. That’s recycling that I can dig. 

Apparently this isn’t his first V12. Some LS1Tech threads from 2011 found some of his earlier motors, but this third iteration looks to be something pretty, well, wicked. 

[Source: Motor Authority, LS1Tech]

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Phillip Thomas

Phillip Thomas

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80 responses to “Lord Baby Jesus Does Exist, and He Has Given Us the Chevrolet "LS12"”

  1. P161911 Avatar
    P161911

    I'm surprised Falconer didn't have anything to do with this.
    <img src="http://www.falconerengines.com/images/falconer_v12/falconer_v12_main.jpg"width=500&gt;

    Reply
  2. parkwood60 Avatar
    parkwood60

    Why cut get rid of 4 cylinders?
    http://www.superchevy.com/features/sucp_0008_smit…
    <img src=http://image.superchevy.com/f/features/pre1977full/11904398/sucp_0008_05_z%2bsmith_collection%2bv16_engine.jpg" width="600">
    Also this one http://www.popularmechanics.com/cars/news/vintage…
    <img src="http://www.popularmechanics.com/cm/popularmechanics/images/mm/petersen-auto-vault-05-0413-lgn.jpg&quot; width="600">

    Reply
    1. phillipthomas25 Avatar
      phillipthomas25

      Size, this is going into a 240Z.

      Reply
  3. calgoat Avatar
    calgoat

    I don't think it'll fit in a Miata, but I reckon I could shoehorn it into my GTO.
    Because my 18mpg average right now is just too much.

    Reply
    1. Scandinavian Flick ★ Avatar
      Scandinavian Flick ★

      You get 18mpg…?
      Stupid lead foot…
      Shoehorning that into a GTO would be a feat, but likely not impossible. I'm surprised it's only 8.8in longer, and some fiddling with the intake routing and thinner fan shroud might just do the trick…

      Reply
      1. calgoat Avatar
        calgoat

        Yeah, it's my daily driver and lately [it seems] I've been spending a ridiculous amount of time sitting at red lights. Genuine city driving yields 15-16, and the best I've ever seen on the highway was 26. I mean, I could get 30 if I set the cruise control to 55mph, but that's not why I bought the car.

        Reply
        1. Scandinavian Flick ★ Avatar
          Scandinavian Flick ★

          Mine is my daily too, and it sucks…
          …down gas like it's on sale, cuz I just can't help myself!
          According to the computer, mine is getting 17 at the moment. Considering how I drive it, I am actually really impressed. I managed to get around 23-25 while cruising it up to Sacramento a couple weeks ago.

          Reply
          1. smalleyxb122 Avatar
            smalleyxb122

            My commute is mostly highway (70mph), but I’m averaging I think 21-22 mpg now that the weather is warmer. It was around 20.4 for most of the winter. I don’t think that I’ve ever gotten it over 25 mpg average even on a long trip. Sure, I can break 30 mpg if I’m in sixth gear cruising at 45-50 mph, but the likelihood of that happening for long enough to keep a tank average over 30 is pretty low, and I wouldn’t voluntarily do that to save a few bucks.

          2. Scandinavian Flick ★ Avatar
            Scandinavian Flick ★

            I love the gearing on these cars. 6th will actually pull you along at 30mph literally at idle. (I wouldn't attempt to accelerate from there without kicking it down though…) But yeah, I can't bring myself to leave it below 2k for too long. The urge is just too strong to feel that pull.

          3. calgoat Avatar
            calgoat

            I've been nerding out and using fuelly.com to track the mileage. It seems the car's computer is slightly pessimistic on the lower end of city driving and optimistic on the highway. In the most literal use of this phrase in the history of the internet: Your mileage may vary.

          4. Scandinavian Flick ★ Avatar
            Scandinavian Flick ★

            Interesting, I've never actually tried calculating it. All my cars in the past were always really, really optimistic, so I was just scared to check it… I need to do a filter and plug change soon, so maybe I'll calculate a tank before and after.

          5. Abe Avatar
            Abe

            I swear the MPG on my '05 drops by 20% if I put in e10.

          6. ˏ♂ˊ mzs zsm msz esq Avatar
            ˏ♂ˊ mzs zsm msz esq

            Flick, you're babying it too much! I got 13.5MPG with Dale the S90 on a tankful, once.

    2. LTDScott Avatar
      LTDScott

      What's that you say?
      <img src="http://images.thecarconnection.com/lrg/tony-hairs-v-16-twin-engine-miata_100379903_l.jpg&quot; width=650>

      Reply
    3. name_too_long Avatar
      name_too_long

      There's a surprising amount of space in the Miata's engine bay so with a bit of sheet metal work it might just be possible.
      Where there's a will (and a wallet), there's a way.

      Reply
  4. Peter Tanshanomi Avatar
    Peter Tanshanomi

    Is it wrong that I am more excited about what I could do with the V-4 than the V-12?

    Reply
    1. taborj Avatar
      taborj

      I'm kinda with you. I really dig the V12, but an LS1-based V4? Drop that into a Saab 96!

      Reply
      1. Peter Tanshanomi Avatar
        Peter Tanshanomi

        That's scary, I was thinking Sonett III.

        Reply
        1. danleym Avatar
          danleym

          I figured you were thinking some sort of motorcycle. Admittedly, I don't know how motorcycle engines differ in basic design from car engines and what that kind of transplant would require, but if you can fit a Chevy big block onto one, I'm sure a much smaller V4 would be doable.

          Reply
          1. dead_elvis Avatar
            dead_elvis

            And you could have a motorcycle that would actually handle, unlike those V8 atrocities.

      2. Peter Tanshanomi Avatar
        Peter Tanshanomi

        Or Locost. Or X1/9. Or Toyota Starlet. Or…

        Reply
        1. taborj Avatar
          taborj

          All excellent suggestions. And that's not scary…that's great minds, thinking alike for the greater good of humanity.
          Or AH Sprite/MG Midget, or Peel microcar, or…

          Reply
        2. frankthecat Avatar
          frankthecat

          the X1/9 deserves two more cylinders, all of which are from Milan.
          c:

          Reply
          1. taborj Avatar
            taborj

            Are you speaking of the excellent Alfa Romeo V6? Because…that would be awesome.

          2. Alff Avatar
            Alff

            Indeed…
            http://hooniverse.info/2012/12/05/for-sale-fiat-x1…

          3. taborj Avatar
            taborj

            Ooooh, mama. Now we're talking.

          4. Alff Avatar
            Alff

            Here here!

        3. Alff Avatar
          Alff

          Original Fiat 500 … or 600.

          Reply
    2. Scandinavian Flick ★ Avatar
      Scandinavian Flick ★

      I'm about equal on both, but holy crap, this thing is adorable! So awesome!
      <img src="http://hooniverse.info/wp-content/gallery/lsv12/photo-6.jpg?i=2065484840&quot; width="500">

      Reply
      1. Felis_Concolor Avatar
        Felis_Concolor

        So tiny, I'm going to call them chapel port heads.

        Reply
        1. phillipthomas25 Avatar
          phillipthomas25

          In the LS world, they're Cathedral heads.

          Reply
    3. krazykarguy Avatar
      krazykarguy

      My bike already has a V-4. Love it.
      1996 VFR750F

      Reply
    4. buzzboy7 Avatar
      buzzboy7

      Yum! Thinking a 1/2LS1 as a ~2.8L four cylinder. The torque would be incredible and in a very compact package. It'd swap nicely into all kinds of small FR, MR and RR cars. I'd like to drop one into my Subi or maybe into the rear of a VW or a Locost or…

      Reply
      1. bhtooefr Avatar
        bhtooefr

        Actually, the torque wouldn't be THAT special – you're looking at an output of 173 hp and 175 ft-lbs if it's pre-2001 Corvette, 175 hp and 183 ft-lbs if it's 2001+ Corvette.
        The package is nice for some things, sure, but larger modern 4-cylinder inline engines can do the output, and even ~2.0 4-cylinder diesels can do that much power and much more torque stock.

        Reply
        1. buzzboy7 Avatar
          buzzboy7

          Not special amounts of torque, but the curve should keep it low. My EJ25 has 167ft•lbs stock, but they come in at a weird time. The LS1 has a nice flat torque curve. I'll take a diesel swap, if I could find a good one that fit.

          Reply
    5. racer139 Avatar
      racer139

      It pumps out 160 hp naturally asperated. It should take to turbocharging very well considering its roots. Imagine a v-4 twin turbo miata. could be a whole bunch of fun.

      Reply
  5. krazykarguy Avatar
    krazykarguy

    Methinks the center cylinders (5 & 6?) are going to get mighty overheated without any coolant passages.

    Reply
    1. taborj Avatar
      taborj

      Hmm…interesting point. Wonder how he'll address that.

      Reply
    2. bhtooefr Avatar
      bhtooefr

      The video does say there'll be more machine work to be done…

      Reply
    3. dukeisduke Avatar
      dukeisduke

      The original 400 small block used siamesed bores. Is this like that?

      Reply
    4. krazykarguy Avatar
      krazykarguy

      Wouldn't 'additional machining' be a lot easier before everything was welded up??

      Reply
  6. muthalovin Avatar
    muthalovin

    Why stop there? I would drop a twin-turbo LSV6 into just about everything with wheels.

    Reply
  7. dukeisduke Avatar
    dukeisduke

    I saw this yesterday on, of all places, foxnews.com. The thing I'm nervous about it is the welding in the middle of cylinders. I'll wait to hear what the durability is of this thing.

    Reply
    1. danleym Avatar
      danleym

      This isn't the first engine that has been welded together from two blocks, so I'm sure it can be done with minimal problems, but I'd want a guy who was born with a welder in his hand doing the work.

      Reply
      1. jeepjeff Avatar
        jeepjeff

        Seriously. If you notch the metal and do multi-pass welds, you can fill in the entire weld area. However, multi-pass welds also leave much more room for inclusions and are often done by industrial robots anymore. Also, I have heard of filling in the intake and exhaust runners with a welder and then re-machining them at a higher angle for better flow.
        This stuff can be done, but I wouldn't do it myself. Guy born with a torch in his hand for this one is right.

        Reply
  8. Wolfie Avatar
    Wolfie

    Can you find a way to express yourself without invoking Religion?
    If you lack the proper understanding of the language,
    Maybe you should take a creative writing course at your high school.

    Reply
    1. Alff Avatar
      Alff

      Let he who is without sin cast the first stone.
      Actually, you're right. I prefer my religion to come with a side of the always delicious Taco Bell.

      Reply
      1. Wolfie Avatar
        Wolfie

        I do not mind the critical comments,but the fact that you down vote my right to have an opinion makes me sad.

        Reply
        1. Alff Avatar
          Alff

          The fact that you would assume I downvoted you makes me … indifferent.

          Reply
          1. Wolfie Avatar
            Wolfie

            The fact that anybody downvoted that opinion makes me wonder about the jury process.

          2. ˏ♂ˊ mzs zsm msz esq Avatar
            ˏ♂ˊ mzs zsm msz esq

            Opinions are fantastic, but was your's:
            on-topic?
            funny?
            polite?
            That's probably why.

    2. dukeisduke Avatar
      dukeisduke

      It's far from the most egregious thing I've read this week, so I'm cool with it.

      Reply
      1. Peter Tanshanomi Avatar
        Peter Tanshanomi

        Wait…bad isn't bad if there's something worse?
        So, the fact that there are Kei trucks makes the Town Cow handle…

        Reply
    3. phillipthomas25 Avatar
      phillipthomas25

      You're not much golfer, are you?

      Reply
    4. danleym Avatar
      danleym

      What's amusing is that I get the sense that you're somewhat irritated because he mentioned anything about religion at all.
      At the same time surely there are some Christians who would get irritated at the irreverent nature in which he uses religion.
      Also, watch Talladega Nights sometime. I'm pretty sure that's where the inspiration comes from.
      Also, Firefox thinks that Talladega is spelled wrong, and should be Gallbladder.

      Reply
      1. njhoon Avatar
        njhoon

        Ballgrabber? What?

        Reply
      2. taborj Avatar
        taborj

        I'm a Christian, and I don't really have a problem here. It's not insulting, really, though I can think of a few other headlines that maybe are better. Honestly, folks will either not think really about it, or maybe they'll go out and want to know more about this Jesus guy.
        And Chrome things Talladega should be Tallahassee.

        Reply
        1. danleym Avatar
          danleym

          I'm a Christian, too, and it doesn't bug me a bit. But I'm fully aware that there are lots of other Christians out there too who are too uptight and get upset too easily. Really, I just found it amusing that despite the obvious irreverence someone would be bothered by it being overly religious.
          Hmm… now I'm wondering what IE thinks it should be. Any IE users out there? Anyone? Hello?

          Reply
          1. Scandinavian Flick ★ Avatar
            Scandinavian Flick ★

            It's not just a Christian thing. Some people are too uptight and try to find offense where there is none. It's like they feed off righteous indignation and attempt to censor others to appease their own sensitivities. For this guy, religion happens to be the hot button issue that gets him riled up. He's the same one who got bent out of shape over the "Jesus Tapdancing Christ" Pontiac listing a while back. He changed his display name after that, and here we go again…

          2. Wolfie Avatar
            Wolfie

            Just for the record,I am offended as a journalist.
            Uptight? Righteous indignation?
            You are good at reading what you wish to see.

          3. Devin Avatar
            Devin

            "Offended as a journalist."
            Now I'm offended.
            Well not really, but the whole "as a journalist" or "as a writer" excuse for getting offended by nothing rankles me more than if you were legitimately religious, since it implies a certain sense of undeserved superiority. Any dipshit who can sort of put together a sentence and is okay with making no money can be a journalist. (And yes, that's also what it says on my business cards.)
            But I didn't downvote you. I said mean things to your face!

          4. Wolfie Avatar
            Wolfie

            Legitimately Religious and undeserved superiority walk hand in hand.

          5. ˏ♂ˊ mzs zsm msz esq Avatar
            ˏ♂ˊ mzs zsm msz esq

            "Legitimately Religious and undeserved superiority walk hand in hand."
            Hmm… yessirie, <img src="http://cdn2.screenjunkies.com/wp-content/uploads/2010/11/arnold-scream.jpg"&gt; TROLL!

          6. Scandinavian Flick ★ Avatar
            Scandinavian Flick ★

            No you're not. This is the same kind of thing you took umbrage at the last time. If you're always going make a big deal out of it, at least stand by your convictions.

          7. ˏ♂ˊ mzs zsm msz esq Avatar
            ˏ♂ˊ mzs zsm msz esq

            IE thinks it's Albuquerque, 4.0 thinks it's Duluth!

        2. Alff Avatar
          Alff

          I'm a Christian … He will decide how good I am at it. There are as many flavors of Christianity as there are people who practice. In my view, the almighty has a wicked good sense of humor.

          Reply
          1. taborj Avatar
            taborj

            Amen to that, as they (erm, we?) say.

          2. Wolfie Avatar
            Wolfie

            What I meant to say was that the author should have enough literary talent to write a short insignificant post without mentioning or invoking religious terms.

          3. phillipthomas25 Avatar
            phillipthomas25

            [youtube i1Nh_3JCFj8 http://www.youtube.com/watch?v=i1Nh_3JCFj8 youtube]
            Please, watch.

    5. nutzforautos Avatar
      nutzforautos

      Nuke the gay baby whales for Jesus!
      Seriously, I'm sorry you found it (and my comment above) somewhat offensive. I'm certain no insult was intended. As a Roman Catholic, I understand there might be quips we don't care for, but try and put it in context. Peace.

      Reply
    6. PotbellyJoe ★★★★☆ Avatar
      PotbellyJoe ★★★★☆

      Just so you're aware, I down-voted you. Not because of your opinion of how a movie quote somehow is proselytizing, but because you felt the need to insult the writer in a personal manner.
      Be anti-religious all you want (again, opinions are cool) but don't go fully bully on the writer.
      Also, votes are the way others express their opinion. Equally valid to your words.

      Reply
  9. Sky_Render Avatar
    Sky_Render

    As cool as this is, I don't understand why it's getting so much media attention, considering the fact that engine isn't even close to being able to run.

    Reply
    1. phillipthomas25 Avatar
      phillipthomas25

      He has built two earlier models, apparently running. This isn't a /possible/ idea that's being toyed with, it's a committed build to push the limits of what they've accomplished.

      Reply
  10. Wolfie Avatar
    Wolfie

    Well enough of this small minded bullshit,I have others to offend.

    Reply
    1. ˏ♂ˊ mzs zsm msz esq Avatar
      ˏ♂ˊ mzs zsm msz esq

      So long then! I'd like to say you'll be missed, but the whole bearing false witness thing… Anyway feel free to come back when you've taken a class on… well… class.

      Reply
  11. Van_Sarockin Avatar
    Van_Sarockin

    Fantastic! Everyone loves a V-12. But it looks like it would have been a lot less effort just to make a V-16.

    Reply
    1. Maymar Avatar
      Maymar

      Even better, a V16 shoved into your choice of cheap old Cadillac (something running a Northstar because it needs a new engine anyhow, or an OG Escalade for the body-on-frame presence).

      Reply
      1. Van_Sarockin Avatar
        Van_Sarockin

        After all, Caddy does have that V-16 heritage… But I'd probably stuff it into a bustle backed Seville.

        Reply
        1. Maymar Avatar
          Maymar

          Damn, that's brilliant! Insert your choice of "full of win" style meme here.

          Reply
  12. Ebony Avatar
    Ebony

    Hi there mates, fastidious post and pleasant arguments commented here, I am really enjoying by these.

    Reply