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Details Emerge For Cadillac’s New 3.0L Twin-Turbo V6 – 133HP Per Liter!

Details Emerge For Cadillac’s New 3.0L Twin-Turbo V6 – 133HP Per Liter!

Cadillac wasn’t kidding when they started talking about a “bespoke” high-output V6 for the upcoming CT6 sedan, and today they’ve released details about the new engine, coded LGW. The most stunning feature of the engine is it’s output: 400 horsepower and 400 ft/lbs of torque, with peak torque numbers occurring from 2,500 RPM to 5,000 RPM. That should be plenty to overcome the CT6’s size. Based very loosely on the 3.6 V6’s architecture, the LGW has a 10% smaller cylinder bore (3.385″) but utilizes the same stroke (3.377″) while running a lower compression ration (9.8:1, from 11.5:1). Even so, the pistons receive a special steel insert in the top ring land to support the cylinder pressures that the engine will see when the turbos are climbing up to their rated 18 PSI of boost.  Enlarged water jackets surround the cylinders to aid in cooling the block down, while the turbochargers take air straight from the inlet boxes and send the compressed air through Cadillac’s water-to-air intercooler before meeting the single throttle body. Both turbos feature titanium-aluminide turbines, which reduce inertia loading and increase efficiency and have vacuum-operated waste gates.

We won’t have to wait too long to see how it will actually work, either. The CT6 will be officially unveiled at the New York Auto Show on March 31, 2015.


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6 thoughts on “Details Emerge For Cadillac’s New 3.0L Twin-Turbo V6 – 133HP Per Liter!

  1. TheSilverBuick

    Can they compact it anymore! That’s A LOT of stuff crammed together. It looks like the turbos bolt right to the head!

  2. ColoradoKid

    Yeah yeah … Once again the Hype & Hyperbole is flowing like so much luke warm fertilizer from the delusional Dr Tim infused morons over Cadillac way . Once gain bragging about this and that …. once again making claims they can never live up to ..

    … and no doubt once again about to severely disappoint the consumer as they create yet another sales failure out of a rebadged Chevy/OPEL/Holden .. thereby maintaining their position as GMs 2nd biggest money losing division .. with Corvette being #1

    Cadillac … the absolute reigning kings of bull**** when it comes to GM . With only FCA topping them for the overall number one slot

    When will Cadillac ever learn ? From the tone of their recent ad campaigns ?

    NEVER !

    Now pardon me while I go wash & wax my Benz . A REAL luxury car worthy of the description as well as the price 😉

    1. familyguy81

      Once again,I am forced to face the question of why the fuck are you here. Do you design automobiles or their engines?Didn’t think so,fucktard.

  3. BeaverMartin

    Man can this bolt into a Grand National clone? Actually a Chevette would be better now that I think about it. I don’t know it’s so compact, it would look right at home in a Pacer. So many options, so much potential.

  4. anthony

    WAIT! Now Ive seen it all. The new big ass Caddy isnt going to have a V8?! Bullshit ! What are these dipshits thinking ? Flagship luxury car my ass.

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