500 Horsepower 2006 Cadillac STS-V

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Quick poll: Would you rather have a Cadillac Cimarron, a Cadillac Catera, or a 500+ horsepower Cadillac STS-V? Let’s see those hands. 1, 2, 49, and now we’re up to 300,884. Ok, I think we have a clear winner. This 2006 Cadillac STS-V is posted here on craigslist in Glenmoore, Pennsylvania, and the seller is asking $14,000. Here is the original listing, and thanks to Mitchell G. for the tip!

I’m a big Cimarron guy, but even for me, that poll was pretty easy. The Opel-based Catera was never on my radar, but I’ve heard some good things about them from previous owners. The Cimarron is mainly for the unusual factor; the comparison between that car and an STS, especially an STS-V, is otherworldly, and not really fair, now that I think about it. The smaller CTS-V would be more fair. One thing I noticed is that “rebuilt” is listed under the title heading on the craigslist ad.

The STS is said to stand for Seville Touring Sedan, and Cadillac offered this model from 2004 for the 2005 model year until the end of 2011 here in the U.S. The high-performance “V” version was offered beginning in 2005 until the end of 2009, and I haven’t seen one in years. Design-wise, I really like the crisp styling of the STS and CTS era of the mid-2000s. The STS was a bit bigger than the CTS and was based on the Seville. Here’s what the trunk looks like inside, by the way.

This looks like a really nice example. A big difference between the CTS and STS is that these cars only came with a GM 6L80-speed automatic, rather than the 6-speed manual that most would rather have. The seller says that the transmission is new as of 2,000 miles ago and is still under warranty, so that’s good, right? The rest of the interior looks great, down to the back seat.

Yowsa! This isn’t a stock engine bay; this 4.4-liter Northstar V8 is supercharged and would have had 469 horsepower and 439 lb-ft of torque, but it’s been modified a bit with what appears to be a Research & Design D3 supercharger. The seller says it puts out 500 horsepower. A 4.4-second 0-60 time is very impressive even today, for a decade ago that was nuts, and this car has even more power than it did from the factory. Power is sent to the rear wheels, and it has a new serpentine belt and synthetic oil change, according to the seller, who says they’ve owned it for three years. Any thoughts on this upgraded STS-V?

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Comments

  1. CVPantherMember

    Great write-up, Scotty.
    I love these things but they are way out of my price range.
    This one seemed too cheap until I saw that the title is rebuilt, and I would probably would opt for one without the engine mods but the price still seems a little low.

    The CTS-V’s I’ve been looking at are $30k for an older one to above $100k for a 2019.
    I could get almost new Corvette for $100k.

    Anyway GLWTS

    Like 4
    • CVPantherMember

      After reading Cadman’s comment below I realized I confused this STS with a CTS.
      That would explain my price confusion. The ask is pretty close to the value given by KBB VG condition for this car.
      So ignore my previous babbling…

      Like 0
  2. geomechs geomechsMember

    I like the car but I’m not very fussy about the induction system. You could destroy the driveline with very little effort. However, the car looks to be well looked after. It’s somewhat similar to the early 80s Eldorado I always had an eye for…

    Like 3
  3. CadmanlsMember

    Nothing against these but that North Star engine I had reservations. So I went for the CTS -V it’s an 05 and have had no regrets. It’s the LS6 so it’s a hoot with the six speed manual transmission. Put close to 50 thousand miles on it and other than the typical LS harmonic balancer it’s been a solid used car.This a good looking sedan and some new owner should get some smiles per mile and that’s what it’s all about.

    Like 5
  4. Terrry

    Maybe it’s just me, but getting excited over a badly overstuffed Chevy Cadavalier, which is what the Cimarron was, is something that’s not going to happen. About the STS-V, it was proof that Cadillac could make a performance luxury car when they put their mind to it. About this particular unit, three things worry me. Why did the transmission fail? Those are pretty robust units. It’s got a rebuilt title, so what’s the story there? And the Northstar engine is supercharged. That’s about the last engine I’d supercharge due to its past history.

    Like 0
  5. Steve R

    These CTS-V’s are destined to be future collectibles, especially wagons and stick shifts. I’m not sure about prices, but the performance LS’s are great engines, once you get past the less than attractive look.

    Steve R

    Like 0

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