• Aug 21, 2008
750-hp 7.5-liter V12 from the Cadillac Cien concept

Here's a shocker: Cadillac has reportedly canceled plans for a range-topping V12 engine. Really, you don't say? Last we checked, General Motors didn't seem to have any problems extracting plenty of performance from its 6.2-liter supercharged and 7.0-liter naturally aspirated V8 engines, and the majority of the development work has already been done for a Caddy installation. Additionally, we've heard some rumors of a possible twin-turbo version of GM's excellent 3.6-liter direct injection six, which could find a cozy spot under the hood of the next Cadillac sedan.

Cadillac is also said to be reconsidering its premium large sedan, where the V12 was originally intended to reside. In its stead, GM's classiest division will focus in on the replacement for the STS and DTS sedans. Also rumored is a new naming convention, as if the waters weren't already murky enough. Will the next Caddy sedan be known as the DT7? We sure hope not. Will it be based on the new Zeta platform? Well now... that decision would get our seal of approval.

[Source: Inside Line]


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  • 19 Comments
      • 6 Years Ago
      I'm looking forward to see what the STS and DTS replacements will be.
      I feel the current DTS seems plain and outdated.
      And I never felt the current STS had enough personality.
      As a result I was never a fan of either car.

      As far as the V12, not sad to see it go.
      • 6 Years Ago
      A chance to unsurp the Toyota Century gone.
      • 6 Years Ago
      Shelved...perhaps for use when times are better.
      • 6 Years Ago
      What they really need is a new V16 the size of an Aveo5 and put that in their large luxury offering.
        • 6 Years Ago
        That's what I was thinking. Well, about producing the entire Sixteen show car anyways.
      • 6 Years Ago
      Wow, i would love a twin turbo v6 in my Saturn Sky! :)
      -Taylor
      • 6 Years Ago
      This is a good idea. It goes for Mercedes too. And V10s are right out.

      I know GM could make a fairly fuel efficient V12, but the main point is it'll be difficult to sell enough of them to make back the engineering costs, even if it could get the same mpg as the V8.

      Best to instead tweak what you got and keep this idea around for later when money isn't so tight.
      • 6 Years Ago
      Am I crazy or do I only see 5 exhausts coming from the side of that motor? Wouldn't that make it a V10?
        • 6 Years Ago
        I thought that too but there's one tucked under the throttle body that goes into the second collector on the inside, it's very hard to see.
        • 6 Years Ago
        you beat me to it. I was just about to say that...looks like a v-10 to me
        • 6 Years Ago
        I see it now, thanks. That's kinda tricky how they routed it... bizarre.
      • 6 Years Ago
      I like the idea of a twin turbo DI V6, but I'm not sure if the world is ready for no V8's being available at all in any of Cadillac's sedans (other then the pushrod V engine). Seems like it would be a marketing disadvantage no matter how good an FI 6 is. I'd rather see a 4.0L/4.6L V8 with DOHC and DI. I know the northstar replacement has been shelved/cancelled/put off, but I thought they were also working on a way to put a DOHC head on the regular smallblocks just for Caddy.
        • 6 Years Ago
        a first what, ford fan boy?
        • 6 Years Ago
        DOHC isn't any better than OHV, and the Northstar certainly wasn't better than the LS#. Why do you think DOHC is inherently better? Because it really isn't, and it would be stupid for GM to develop a V8 using different technologies when what it already has the best large-scale mass-produced V8s in the world.
        • 6 Years Ago
        all of asudden it looks like ford is bringing a first to the north american market.

        But a V12 would be really badass no matter who has it thier line up
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