I see that I need to take a moment to reply to clear up a few misunderstandings.
Yes I am a Cadillac Technician, some say I am pretty good but I try not to blow my own horn. That being said, bear in mind my training is to maintain GM cars and light trucks to factory specifications. I work in a dealership, not a speed shop where people modify factory systems for whatever reason. I never professed to know everything about this topic, nor any other in recent memory. I offer information that I know to help people, I sometimes speculate a little bit based on what I have seen and what my training and experience have taught me. Sometimes I make mistakes, sometimes I don't.
Regardless of how "rediculous" my statements are I really don't think it justifies, what I consider, the personal attack you launched on me in your last post. Perhaps my statement wasn't well thought out, but I don't recall saying anything about you, your friends, your car, your friends car that would indicate I thought anyone was an "idiot" or has never owned or worked on a performance vehicle.
I have yet to see you post anything difinitive to indicate that he actually gained rear wheel torque or horsepower by changing to a single piece shaft, maybe you did and I missed it. I don't doubt that it makes the car drive differently but to really understand the validity of his statements I'd like to see a before and after dyno test that shows a change to a single piece shaft made such a world of difference. I can't say much about a GTO because I have never been within 50 feet of one, but I am quite intimate with the workings of the CTS-V as many members of this board can attest to. I have worked on many of their vehicles with a seemingly high degree of satisfaction.
As you know a driveshaft is a metal tube with joints on each end (and sometimes in the middle) to transfer power from the transmissionto the differential. I can see where elminiating the center joint and carrier support might reduce frictional losses by a small amount but, having lived in the "show-me" state for 13 years I would just like to have someone explain to me why this would make such a "big" difference. I am completely open to an intelligent discussion on the topic, but I will be the first to profess that my expertise is more oriented to electrical and drivability issues than basic mechanical things.
To sum it up, my skills are honed to find out what is wrong with something and fix it, not speculate as to what changes might affect more rear wheel horsepower.
If you still REALLY believe that I was trying to insult you, your friend, or anyone on this forum, then I offer my apologies, it wasn't intended. Years of doing this sort of thing on the web has made me realize that it is very easy to read intent into printed words that just isn't there. It's happened to me before too.
I hope this clears up any misunderstandings about my intent or what I have said in this, or any other topic.
If anyone else has a problem with me or my statments please feel free to contact me privately so we can address those issues like men. I know how to use the "edit" button on my previous posts and don't have an issue doing it to clear up any such problems.
Otherwise, if it's okay with everyone, I'll continue to do what every member of this forum does.... express my opinion and make an occaisional mistake or two.
No hard feelings.
(BTW, you forgot to say something about my mom) :histeric: