C7 Weight Issues
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Le Mans Master
Joined: Oct 2004
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From: Toronto Ontario Canada
C7 Weight Issues
Just heard a rumour from a parts supplier I know. Apparently GM Engineering has been working overtime trying to still take weight out of the C7. That would explain why they are no firm details on weight. It would also explain why they are saying 0-60 in under 4 seconds without fully qualifying that remark. As it stands now it is probably over 4 seconds and they will do everything they can to meet their claims.
Team Owner
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Thread Starter
Le Mans Master
Joined: Oct 2004
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From: Toronto Ontario Canada
Thats what I thought as well but I was told this is typical in automotive. Contracts may have been signed for production parts but variance in specification up to Job 1 is always anticipated at the supplier level. Maybe somebody else can chime in about this.
Melting Slicks
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From: Long Island New York
I think the car is already under 4 secs as they have confidently stated that......
....Maybe it will be under 3.5 secs now
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Le Mans Master
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From: Toronto Ontario Canada
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I won't speak to the 2014 Corvette but it is very much true in automotive engineering. Designs lead to prototypes lead to production. Things can be completely volatile at this point. It is still months away before prodution intent parts will be coming on line. It doesn't take years to build production tooling, it takes weeks and months. There is typically a give and take going on between the supplier and the customer with revisions being made along the way. While the final envelope of a part should be set, methodologies, finishes, shapes, weight reductions can all take place late in the game.
Thread Starter
Le Mans Master
Joined: Oct 2004
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From: Toronto Ontario Canada
I won't speak to the 2014 Corvette but it is very much true in automotive engineering. Designs lead to prototypes lead to production. Things can be completely volatile at this point. It is still months away before prodution intent parts will be coming on line. It doesn't take years to build production tooling, it takes weeks and months. There is typically a give and take going on between the supplier and the customer with revisions being made along the way. While the final envelope of a part should be set, methodologies, finishes, shapes, weight reductions can all take place late in the game.
Burning Brakes
Joined: Oct 2012
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From: Dallas, TX
I really doubt it's over four seconds right now... It's possible they're still working to lower the weight, but if so, it's probably just to get it even further below four seconds than it already is.
It would be utterly pathetic if after all this time, they couldn't even improve the 0-60 by .2 s from where it was, even if the car is not a final product yet.
It would be utterly pathetic if after all this time, they couldn't even improve the 0-60 by .2 s from where it was, even if the car is not a final product yet.
Safety Car
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Thanks Paul. That is kind of what I thought. When you press for specifics in weight and performance nobody is precise at this point. It could very well be that the engineering team is a bit worried at pulling the performance bunny out of the hat in time for Job 1. Lets hope that they succeed. It would be bad if they don't and the car magazines end up getting a test vehicle shortly after production that is slower than the C6.
Burning Brakes
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The car will be fairly significantly faster than the C6.
Last edited by RocketGuy3; Jan 25, 2013 at 03:07 PM.
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Heard they were working to reduce the weight of the torque tube they had to make out of steel to deal with the vibrations of the AFM.
Melting Slicks
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Just heard a rumour from a parts supplier I know. Apparently GM Engineering has been working overtime trying to still take weight out of the C7. That would explain why they are no firm details on weight. It would also explain why they are saying 0-60 in under 4 seconds without fully qualifying that remark. As it stands now it is probably over 4 seconds and they will do everything they can to meet their claims.
Team Owner
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In a drag race(which the 0-60 is and the 1/4 mile is), you are only running below 4,000 RPM once, and that's in first gear up to 31 MPH with the Z51. From 31 MPH to 60 MPH, you are above 4,000 RPM and the LS7 will walk all over a LT1. Once you shift into second gear the RPM stays above 4,000 and the superior torque and horsepower will pull away from the LT1, Same for shifting into third gear, and then into fourth gear. I only bring up the Z06 because you did trying to show superiority of the LT1.
But, the LT1 with Z51 should slightly out perform the LS3 GS depending on what the final weight figures are for the Z51. LT1 without Z51; I doubt it will outperform the LS3 GS.
Last edited by JoesC5; Jan 25, 2013 at 04:02 PM.