F55 Performance issue
But lets remember one thing. There actually is one person who as driven every variation of the C6 - at the same track and at least very similar conditions. He has made numerous runs until he is pretty sure he has wrung them all out to get the best out of them under at the track and conditions he has to work with. And by all accounts, he is a pretty damn good driver.
His figures show the difference IS 1/10th of a second between Z51 and non-Z51 cars. By the way, he is the factory Corvette test driver. As long as there is one person who has tested them all to within an inch of their lives, why don't we believe the figures that GM has posted for the car?
Why does it have to be a "pissing match" just because someone points out the differences between the Z51 and non Z51 C6 Corvette????
It has gotten to the point to where one cannot even say "Z51" without some here getting offended.
Indeed its like SellingBMWforC6 says. It is "politically incorrect" to even discuss the Z51.
You have some here who don't even want the car referred to as "Z51" it has gotten so bad.
Again, I know that you are going to interpret what I am about to say as "pissing", but by all indications so far, coming from the results that the quickest C6s have shown so far, made public over the world wide web, anywhere you care to look, the difference does indeed seem to be significant.
Last edited by '06 Quicksilver Z06; Feb 25, 2006 at 12:37 PM.
My tuner has been waiting for the software and finally got it last Tuesday. He told me it cost him more to get it now but he had received it and downloaded it when he contacted me on Wednesday. He is Jeff Creech at Carolina Auto Masters in Durham, NC. He told me he is very excited about this software and the difference it will make. I can't wait to get it done.



The 3.42 ratio, limited-slip axle is standard on all models, while the higher end 2.56 ratio is included with the optional A6 models only. The G92 was the performance axle ratio for the C5, and it was a 3:15 gear ratio.
So, I think what that means is,if you order the A6 you get the higher rear end, maybe a dealer can tell you if you can spec a 3:42 when you order.
Hope that helps and makes sense, it's sort of confusing to me, and I wrote it . . .
Last edited by BlackOps; Feb 25, 2006 at 01:55 PM. Reason: That would be ratio not ration. Geez, those memories of CRats.



It has gotten to the point to where one cannot even say "Z51" without some here getting offended.
Indeed its like SellingBMWforC6 says. It is "politically incorrect" to even discuss the Z51.
Respectfully.
Respectfully.
Nontheless my intent in my later post was to focus on disputing "ideas" as opposed to individuals. Indeed, I stated as such.
With these things in mind; however, let us collectively move forward towards giving the original poster, the best advice that we can give him.
Advice which is representative of the depth and quality of the experiences of the members of this forum. It is these experiences which should go a long way towards helping him to get his issue resolved.
My own experiences have been offered, and if they are of any benefit to him, or not, then so be it. I am only trying to help him. It is unfortunate that some perceive that as an attack on their own personal purchasing decisions. Decisions which they do not have to answer to anyone for.
But as you say, I shall work on my "delivery."
And BTW, C6 Corvette differentials, now only come with two factory rear gear ratios. 3.42 in the manuals and 2.56 in the automatics. The '05 A4s came with an optional 3.15 performance axle, and the Z51 (Flame suit on) A4s came with it as well. This was the last of the 3.15 gear ratios in the Corvette. And the last "performance axle" option offered in the automatics.
Chevy has announced no plans to make a different axle available for the A6 equipped Corvettes.
Last edited by '06 Quicksilver Z06; Feb 25, 2006 at 02:21 PM.
The Best of Corvette for Corvette Enthusiasts
Maybe the first response to an opinion different than our own should be a question: "Where and when do you drive your car? How do you drive it?" Vetters who drive casually on smooth, curvy highways on weekdays may have a different take...and need...from those who spend Sundays at the local strip running time trials.
As someone here once said, to start a thread with: "My choice is good, yours is, well, stupid," is probably going to draw fire (or flames).

Peut-être nous pouvons monter la route de gloire ensemble autrefois.
Oscar
Indeed its like SellingBMWforC6 says. It is "politically incorrect" to even discuss the Z51.
You have some here who don't even want the car referred to as "Z51" it has gotten so bad.
Who is he and where does he document his findings?
I don't know his name, but there was an article about him in "Corvette Quarterly" about three years ago. It was an interesting article, and it says he really drives the dog-poop out of them to get the best times. If I can find the article, I'll post more details. I know I still have it upstairs in the "archives".



Peut-être nous pouvons monter la route de gloire ensemble autrefois.
Oscar

Harry
PS-That means "I'll only do it until I get near-sighted"
H










