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2017 Grand Sport weight and balancing

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Old 03-03-2017, 02:47 PM
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Kamran
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Default 2017 Grand Sport weight and balancing

For anyone interested. Just picked up my car and I was pleasantly surprised at what were all measured!

Car weighed 3,650 lbs with 3/4 tank of gas, 165 lbs dry weight (used for driver), Vetteworks sharkbar, 6pt harness, stage 3 aero, fire ext., ZL1 aluminum jack pocks and license plate holder. May be 1-2 lbs of junk in glove compartment.

Gas alone weighs about 90-100 lbs depending on what 3/4 on the gage means.

Weight balancing was 49.5% front, 50.5% rear, which will vary a bit with gas.

Nice job GM reporting it as it is in real world!

Last edited by Kamran; 04-29-2017 at 11:52 AM.
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Old 03-07-2017, 03:48 PM
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topmover
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Originally Posted by Kamran
For anyone interested. Just picked up my car and I was pleasantly surprised at what were all measured!

Car weighed 3,650 lbs with 3/4 tank of gas, 165 lbs dry weight (used for driver), Vetteworks sharkbar, 6pt harness, stage 3 aero, ZL1 aluminum jack pocks and license plate holder. May be 1-2 lbs of junk in glove compartment.

Gas alone weighs about 90-100 lbs depending on what 3/4 on the gage means.

Weight balancing was 49.5% front, 50.5% rear, which will vary a bit with gas.

Nice job GM reporting it as it is in real world!
Was this a Z07 Grand Sport?
Old 03-07-2017, 05:47 PM
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Kamran
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Originally Posted by topmover
Was this a Z07 Grand Sport?
Base GS, with the above add-ons and dry weights.
There might have been a little saving (?) with the competition seats that I have.

Last edited by Kamran; 03-07-2017 at 05:49 PM.
Old 03-07-2017, 08:06 PM
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Poor-sha
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Stock wheels and tires?

For comparison, my 2015 C7 Z06 3LZ weighed 3559 with a full tank of gas on stock wheels and Cup 2 tires. No driver. The only modification was converting the standard iron brakes in front to the AP Racing endurance kit.
Old 03-07-2017, 09:48 PM
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Kamran
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Originally Posted by Poor-sha
Stock wheels and tires?

For comparison, my 2015 C7 Z06 3LZ weighed 3559 with a full tank of gas on stock wheels and Cup 2 tires. No driver. The only modification was converting the standard iron brakes in front to the AP Racing endurance kit.
Yes, stock wheels and PSS tires. I have Forgelines/R7's but not on the car when weighing and balancing was done.


The more important balancing number was the cross-balancing which was 50.6%....outstanding! Based on the above, I'd estimate GS's dry OEM weight to be an actual 3,350+/- Lbs.


3559 for Z-3LZ makes sense, with supercharger, gas and 3LZ weight add-ons.
Old 03-07-2017, 10:30 PM
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Gotta admit, it's mildly upsetting to see the SS 1LE Camaro weigh less than the Corvette Grand Sport. C8 will certainly be dropping pounds, I think it's an inevitable strategy that must be employed. I'd assume GM will eventually attempt to make all the panels out of carbon along with mass production of the entire body out of CFRP. I think a lot of this Bowling Green renovation has to do with the future body panel production.

Since the development of C6 ZR1, the process of creating panels out of carbon has gotten faster, going from fast autoclave processes to a type of pressure press. They also hot bond panels at ambient temperature, versus bonding them and oven curing the adhesive.

Hopefully we see the same percentage of mass drop on C7 to C8 as we saw from 5th to 6th gen Camaro.
Old 03-08-2017, 12:57 AM
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How much does a c6 z06 weigh in comparison?
Old 03-08-2017, 07:31 AM
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Scooter70
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Originally Posted by freaknbigpanda
How much does a c6 z06 weigh in comparison?
Advertised weight was 3130#.

My 2001 Z06 weighted 3080 with just under a half tank of fuel.

Last edited by Scooter70; 03-08-2017 at 07:32 AM.
Old 03-08-2017, 09:38 AM
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I've never seen anyone go on a diet to get the weight down. I have seen people pay a lot for titanium lug nuts though.



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Old 03-08-2017, 12:32 PM
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Originally Posted by rfn026
I've never seen anyone go on a diet to get the weight down. I have seen people pay a lot for titanium lug nuts though.

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My dry weight is 145 lbs. are you suggesting I should stop eating all together???? May I at least drink water?...not that it has any bearing whatsoever on the topic!
Old 03-09-2017, 07:02 AM
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So from the factory with you in the drivers seat the CB cross weight was 50.6%? Wow i had no idea any manufacturer was sending out of the factory with corner balance that close. Awesome!
Old 04-26-2017, 10:36 PM
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Originally Posted by AlanAutoSports
Gotta admit, it's mildly upsetting to see the SS 1LE Camaro weigh less than the Corvette Grand Sport. C8 will certainly be dropping pounds, I think it's an inevitable strategy that must be employed. I'd assume GM will eventually attempt to make all the panels out of carbon along with mass production of the entire body out of CFRP. I think a lot of this Bowling Green renovation has to do with the future body panel production.

Since the development of C6 ZR1, the process of creating panels out of carbon has gotten faster, going from fast autoclave processes to a type of pressure press. They also hot bond panels at ambient temperature, versus bonding them and oven curing the adhesive.

Hopefully we see the same percentage of mass drop on C7 to C8 as we saw from 5th to 6th gen Camaro.
The Camaro lost that weight due to downsizing/moving to the Caddy Alpha chassis.
Old 04-28-2017, 05:40 AM
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X25
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Originally Posted by pdiddy972
The Camaro lost that weight due to downsizing/moving to the Caddy Alpha chassis.
Originally Posted by AlanAutoSports
Gotta admit, it's mildly upsetting to see the SS 1LE Camaro weigh less than the Corvette Grand Sport. C8 will certainly be dropping pounds, I think it's an inevitable strategy that must be employed. I'd assume GM will eventually attempt to make all the panels out of carbon along with mass production of the entire body out of CFRP. I think a lot of this Bowling Green renovation has to do with the future body panel production.

Since the development of C6 ZR1, the process of creating panels out of carbon has gotten faster, going from fast autoclave processes to a type of pressure press. They also hot bond panels at ambient temperature, versus bonding them and oven curing the adhesive.

Hopefully we see the same percentage of mass drop on C7 to C8 as we saw from 5th to 6th gen Camaro.
New Camaro SS 1LE is NOT even close. Its curb weight is 3,784 lbs. Grand Sport's official curb weight is 3,428 lbs, which is full tank of fuel but no driver (and is consistent with this post). Kamran's number is with 165 lbs of ballast as well as track equipment. If we did the same to the 1LE, it would hit 4,000 lbs.

Last edited by X25; 04-28-2017 at 05:41 AM.
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Old 04-28-2017, 11:51 AM
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I think he must have seen weight on the V6 1LE and thought it was the SS.
Old 04-29-2017, 08:11 AM
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Originally Posted by freaknbigpanda
How much does a c6 z06 weigh in comparison?
my 2012 Centennial Z06 was 3217 with about 1/2 tank fuel
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Old 04-29-2017, 08:28 AM
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How close are you guys getting on cross-weights?



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