GM C7 specs
How is it possible to claim 50/50 weight distribution without knowing the final weight of the vehicle? Now, I see the hp/tq have ESTIMATED attached to it but no such case with the weight distribution. Surely there will be a difference between sum and no sump and manual vs. auto and different wheel and tire combos.
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Originally Posted by petermj
(Post 1583124425)
How is it possible to claim 50/50 weight distribution without knowing the final weight of the vehicle? Now, I see the hp/tq have ESTIMATED attached to it but no such case with the weight distribution. Surely there will be a difference between sum and no sump and manual vs. auto and different wheel and tire combos.
It might turn out to be 49.95/50.05 OH NO! Or 50/50 It'll be ok whichever. |
Originally Posted by petermj
(Post 1583124425)
How is it possible to claim 50/50 weight distribution without knowing the final weight of the vehicle? Now, I see the hp/tq have ESTIMATED attached to it but no such case with the weight distribution. Surely there will be a difference between sum and no sump and manual vs. auto and different wheel and tire combos.
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Originally Posted by petermj
(Post 1583124425)
How is it possible to claim 50/50 weight distribution without knowing the final weight of the vehicle?
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the 50/50 should be an estimate .
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Originally Posted by petermj
(Post 1583124425)
How is it possible to claim 50/50 weight distribution without knowing the final weight of the vehicle? Now, I see the hp/tq have ESTIMATED attached to it but no such case with the weight distribution. Surely there will be a difference between sum and no sump and manual vs. auto and different wheel and tire combos.
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Originally Posted by arkus
(Post 1583124713)
the 50/50 should be an estimate .
STRENGTH IN NUMBERS Performance Features and Options Data Engine LT1 6.2L V-8 Horsepower / Torque 450 / 450 (estimated) Fuel delivery Direct Injection Compression ratio 11.5:1 Manual Transmission 7-speed with Active Rev Match Automatic Transmission 6-speed paddle-shift Chassis Std, Z51, Z51 with Magnetic Selective Ride Tires Michelin Pilot Sport ZP run-flat Wheels 18" front / 19" rear, 19" front / 20" rear (Z51) Three Available Option Groups 1LT, 2LT, 3LT Available Roof Options Painted Carbon Fiber, Visible Carbon Fiber, Transparent Wheelbase (in/mm) 106.7 / 2710 Overall length (in/mm) 177 / 4495 Overall width (in/mm) 73.9 / 1877 Overall height (in/mm) 48.6 / 1235 Weight distribution (%) 50 / 50 (front/rear) Track (in)62.8 / 61.6 (front/rear) Brake Diameter (in) 12.6 (13.6 Z51) (front), 13.3 (rear) Obviously GM knows what word ESTIMATED means. So my question is, how are they exactly are intending to deliver on the weight distribution without even estimating the weight, load per axle, sprung and unsprung weight and few other details? |
Length, width, blah blah but no weight.
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Maybe they are waiting to get their deposits on the C7 before they release the weight... It seems the curb weight may be a more than what we expected.
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Seems there's a simple enough explanation: they're close enough to final mass that they know any tweaks still on the table won't change the balance enough to miss the 50/50 target. Anything less than 50.5% up front and they're good.
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In the march car and driver tadge said it's actually closer to 48front, 52rear
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Originally Posted by DREAMERAK
(Post 1583126742)
In the march car and driver tadge said it's actually closer to 48front, 52rear
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C6 base weight distribution is 51/49 (no dry sump), Z06 is 50/50 (with dry sump and battery in the rear).
Has anyone seen a credible explanation regarding C7? |
Originally Posted by petermj
(Post 1583129331)
C6 base weight distribution is 51/49 (no dry sump), Z06 is 50/50 (with dry sump and battery in the rear).
Has anyone seen a credible explanation regarding C7? |
Originally Posted by JoesC5
(Post 1583129381)
I think the 48/52 was inherited with the Stingray name used on the C7 as that's the weight distribution of a C2 with the small block.
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I assume any final design tweaks will be a minimal affect on weight distribution. Let's face it, if you dump a cup of water in the ocean, does mean sea level rise?
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Originally Posted by petermj
(Post 1583129254)
Last March or this upcoming March?
The current March issue - 48/52 is 'close' to final ratio according to Tadge |
Originally Posted by GoldenRod
(Post 1583129472)
I assume any final design tweaks will be a minimal affect on weight distribution. Let's face it, if you dump a cup of water in the ocean, does mean sea level rise?
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Originally Posted by GoldenRod
(Post 1583129472)
I assume any final design tweaks will be a minimal affect on weight distribution. Let's face it, if you dump a cup of water in the ocean, does mean sea level rise?
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Some interesting info from years of Road & track.
1957.... curb weight 2880 test weight 3180 distribution 53.5/46.5 1963...327ci curb weight 3030 test weight 3380 distribution 48/52 1965...396ci curb weight 3260 test weight 3570 distribution 51/49 with driver aboard. 1968...327ci curb weight 3260 test weight 3525 distribution 49/51 with driver aboard. 1987...350ci curb weight 3280 test weight 3440 distribution 50/50 with driver aboard |
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