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2004-2007 Cadillac CTS-V General Discussion Discussion, 141 MPH pic! in Cadillac CTS-V Series Forum - 2004 - 2007; I got out bed the other morning, tripped over the cat, almost fell on my wife and might have killed ...
  1. #31
    ILL LD's Avatar
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    Re: 141 MPH pic!

    I got out bed the other morning, tripped over the cat, almost fell on my wife and might have killed her. Where did I go wrong?

  2. #32
    globed70 is offline Cadillac Owners Enthusiast
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    Re: 141 MPH pic!

    The Ttrmrc T56 M12 transmission has .84 ratio in 5th coupled to a 3.73 axle ratio, and at redline in 5th you are at 163mph. A switch to 6th drops the ratio to .56, and you would need HUNDREDS more horsepower to pull any faster in a gear that tall. The only way to go faster is to drop the axle ratio down (numerically).... you would then give up some of the butt-kicking feel at lower speeds, debateable if the 0-whatever times would change much.

  3. #33
    Kansas-Cadillac is offline Cadillac Owners Member
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    Re: 141 MPH pic!

    Several years ago I was driving a VR6 way too fast, trying to see how fast it would go. I ran over and killed a small dog or puppy (I think it was a black cocker puppy). There was no way I could safely miss him. I have felt horrible about it since. People shouldn't let their dogs run loose. But people also shouldn't try to double the speed limit, even if a highway seems deserted. That's what tracks are for. I was damn lucky is was a small dog and not a deer, cow or horse.

  4. #34
    nandanrp is offline Cadillac Owners Member
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    Re: 141 MPH pic!

    Quote Originally Posted by globed70
    The Ttrmrc T56 M12 transmission has .84 ratio in 5th coupled to a 3.73 axle ratio, and at redline in 5th you are at 163mph. A switch to 6th drops the ratio to .56, and you would need HUNDREDS more horsepower to pull any faster in a gear that tall. The only way to go faster is to drop the axle ratio down (numerically).... you would then give up some of the butt-kicking feel at lower speeds, debateable if the 0-whatever times would change much.
    Ok so 163 is the absolute top speed...thanks for the info.

  5. #35
    CVP33's Avatar
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    Re: 141 MPH pic!

    163 is NOT the true top speed. It is electronically limited not drag limited. Trust me on this, the V is still pulling strong all the way to the limiter. I'd guess that she's capable of at least another 15mph maybe 20mph.

  6. #36
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    Re: 141 MPH pic!

    Quote Originally Posted by gothicaleigh
    Thank you for 'allowing' us this time then.

    As for the anti-speed members:
    Settle down. It sounds that he was only endangering himself and his car. I admit that snapping off pics at that speed is a bit reckless and not at all commendable, but to fly along a deserted road at 140 is a walk in the park for these cars. Even mine remains very composed and stable at that speed.
    Hell, for all I know my car would probably PREFER to be driven at that speed every damn day. Pssh... Speed Limits. :coolgleam

  7. #37
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    Re: 141 MPH pic!

    For all you 149/160+ MPH people that think it's cool to travel at those speeds anywhere, Interstates, deserted roads, deserted airports..........we're going to miss you. Please reconsider!
    April 2002 Severe vehicle damage
    almost to the point of total
    destruction of the car and driver.
    Is there ever a reason to drive this
    fast and damage yourself this
    badly? This car wrecked only with
    itself, how badly could others have
    been hurt if they had been near?

  8. #38
    Clintonwmills is offline Cadillac Owners Fanatic
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    Re: 141 MPH pic!

    cant see the image!

  9. #39
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    Re: 141 MPH pic!

    don't want to.

  10. #40
    nandanrp is offline Cadillac Owners Member
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    Re: 141 MPH pic!

    Quote Originally Posted by CVP33
    163 is NOT the true top speed. It is electronically limited not drag limited. Trust me on this, the V is still pulling strong all the way to the limiter. I'd guess that she's capable of at least another 15mph maybe 20mph.
    I'm sure it pulls strong, but what globed70 had to say about gear/differential ratios is convincing too. The magazines didn't say if it is electronic or absolute, so I don't know any better.

  11. #41
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    Re: 141 MPH pic!

    Quote Originally Posted by CVP33
    163 is NOT the true top speed. It is electronically limited not drag limited. Trust me on this, the V is still pulling strong all the way to the limiter. I'd guess that she's capable of at least another 15mph maybe 20mph.

    Just think if you had the kind of power that the Cadillac Sixteen puts out, how fast you could go.

    Oh wait, I guess you could get that much hp out of a CTS:
    http://www.cadillacforums.com/forums...ad.php?t=10708

    As for the CTS-V redlining in 5th at 163, I think I saw an RPM graph somewhere that shows it cuts off much before redline while doing 163. I'll see if I can dig it out. Also, can someone find the gear ratios, final drive, and coefficient of drag for a Z06? I'm curious as to how different they are (the Z06 hits in the 180mph range).

    The CTS, despite it's boxy looks, is quite aerodynamic with a coefficient of drag (aerodynamic drag, not mechanical) of .30 for the 'normal' CTS (the much smaller BMW 3 series has a .31Cd for comparison). I would imagine that the CTS-V with it's side skirting and lower stance, would be even more slippery.

  12. #42
    JEM
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    Re: 141 MPH pic!

    Quote Originally Posted by gothicaleigh
    Also, can someone find the gear ratios, final drive, and coefficient of drag for a Z06? I'm curious as to how different they are (the Z06 hits in the 180mph range).

    The CTS, despite it's boxy looks, is quite aerodynamic with a coefficient of drag (aerodynamic drag, not mechanical) of .30 for the 'normal' CTS (the much smaller BMW 3 series has a .31Cd for comparison). I would imagine that the CTS-V with it's side skirting and lower stance, would be even more slippery.
    Remember, Cd is just a measure of how slippery the shape is - it's somewhat independent of of the size of that shape. You then have to factor in frontal area, and the CTS and CTS-V have a fair bit more frontal area than a Z06 and a little more than a 3-series.

    Side skirts and the like are unlikely to have a big impact on Cd unless pieces of them are sticking way out into the airflow (those ricer body kits destroy Cd.) If you're engineering a vehicle and you want to cut Cd, you work on airflow under the car and through the engine compartment. The CTS-V's bigger wheels alone probably kick the Cd up a bit relative to the base CTS.

  13. #43
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    Re: 141 MPH pic!

    Quote Originally Posted by Clintonwmills
    I got 146 but to blurry! It is hard to shift into 5th going 141 and taking pictures in the dark all at the same time, but someone's got to do it!

    Wow interesting to know it'll do an honest 140. I'll echo others in the "be careful" sentiment. You need to switch lanes or do much more than keep straight at 140, and it'll get VEERY loose VEERY quickly. ( I know of where I speak!).

    Anyway, you tried it once. And that should be good enuff...hopefully. We can't afford to loose any CTS-enthusiasts!!

    Cheers!

  14. #44
    JEM
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    Re: 141 MPH pic!

    Quote Originally Posted by CTScop
    Wow interesting to know it'll do an honest 140. I'll echo others in the "be careful" sentiment. You need to switch lanes or do much more than keep straight at 140, and it'll get VEERY loose VEERY quickly. ( I know of where I speak!).
    At 140 in (most) road cars you do everything gently.

    Still, our Bimmers are plenty stable for it to be a usable freeway speed under appropriate conditions (e.g. unrestricted sections of Autobahn.)

    It's been pretty rare for a Detroit product to be usable at such speeds, even when they've had the power to get there they've either had poor stability or engine-cooling problems. I hope GM got it right on the V.

    The Germans don't always get it right, either: when Audi first released the TT a few years back, the rear developed a fair bit of aerodynamic lift. They had a couple fatal and near-fatal accidents where folks would be buzzing down the A'bahn at 140 or so, back off the gas in a bend, and the rear end would come around.

    They ended up recalling all the TTs, slapping a rear spoiler on 'em, changing the springs and shocks and sway bars to an understeer-at-all-times setup, and recalibrating the stability control system to full-paranoia. I've never driven a TT, but if you believe the Brit press, Audi took what used to be a fun car to drive (in pre-recall form) and turned it into a leaden lump in order to ensure it was safe at high speeds.

  15. #45
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    Re: 141 MPH pic!

    JEM brings up a good point. What is holding the rear down and those speeds? I had mine up to 163 mph and it felt very stable, what I described as scary smooth and no sensation of speed. GM must have got it right and created a car that was aero neutral, creating no lift at speed. Or did they? Did I just get lucky?

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