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With the higher torque (at lower rpm) and peak values, I wonder how a race would go if from rolling start? Say 20-30 mph to 1/4 mile? Similar weights and the GS should hold rpm well with torque advantage during shifts? The Z06 will stay wound up for sure. These are things I want to see when the GS starts getting tested.
My guess is even slightly quicker than that. In ideal (well-prepped near sea-level track, good air etc.) conditions, I think a bone stock Grand Sport coupe 1LT might even run a high 10.6 at over 126mph.
With the higher torque (at lower rpm) and peak values, I wonder how a race would go if from rolling start? Say 20-30 mph to 1/4 mile? Similar weights and the GS should hold rpm well with torque advantage during shifts? The Z06 will stay wound up for sure. These are things I want to see when the GS starts getting tested.
More interested in the SR vs GS et/mph the SR is going to be faster. Chevy will advertise the GS but you watch. Same everything even gear ratios.
I just posted these charts in another thread, look at the torque split between the Z06 and the GS at 3,000 rpms. It’s around 175 lb-ft. That’s a massive amount of torque AND hp in favor of the GS.
From a low roll or off the stoplight, not wound up in launch mode, just normal driving, on a short burst, low rpms, the GS should walk from the Z06 easily. Same weight, same gearing, massive increase in torque, massive increase in HP at low rpms.
Roll racing? Z06 has the win easily. If I had to guess official numbers for the GS I’d say 125 mph traps official (Z06 gearing definitely will help). Z06 has hit 135 in good air on the fast list, and is listed at 131 on Chevy’s website.
In the end it’s power to weight (a=Fm), you can’t beat Newton. Z06 has 135 hp over the GS on the top end. The GS has the power advantage at the low end so if you’re in that range you’re taking a Z06 down. On a road course the Z06 is in its element and will easily put the GS down.
On the drag strip the Z06 still wins because you’re sitting in the Z06’s power band for the entire run. Now when you start factoring in higher gears, rolling starts, shorter runs, the GS will be pound for pound be a challenge for the Z06.
More interested in the SR vs GS et/mph the SR is going to be faster. Chevy will advertise the GS but you watch. Same everything even gear ratios.
I agree, as long as the Z51 gets traction (which will probably require a prepped surface) it beats the GS with less weight, rolling resistance/rotational mass and aero. I predict .2 and 3 mph in the 1/4
Originally Posted by Over-Rev
I just posted these charts in another thread, look at the torque split between the Z06 and the GS at 3,000 rpms. It’s around 175 lb-ft. That’s a massive amount of torque AND hp in favor of the GS.
From a low roll or off the stoplight, not wound up in launch mode, just normal driving, on a short burst, low rpms, the GS should walk from the Z06 easily. Same weight, same gearing, massive increase in torque, massive increase in HP at low rpms.
Roll racing? Z06 has the win easily. If I had to guess official numbers for the GS I’d say 125 mph traps official (Z06 gearing definitely will help). Z06 has hit 135 in good air on the fast list, and is listed at 131 on Chevy’s website.
In the end it’s power to weight (a=Fm), you can’t beat Newton. Z06 has 135 hp over the GS on the top end. The GS has the power advantage at the low end so if you’re in that range you’re taking a Z06 down. On a road course the Z06 is in its element and will easily put the GS down.
On the drag strip the Z06 still wins because you’re sitting in the Z06’s power band for the entire run. Now when you start factoring in higher gears, rolling starts, shorter runs, the GS will be pound for pound be a challenge for the Z06.
Does the GS have an advantage off the corner making 50 more ftlbs of torque at peak though?
I agree, as long as the Z51 gets traction (which will probably require a prepped surface) it beats the GS with less weight, rolling resistance/rotational mass and aero. I predict .2 and 3 mph in the 1/4
Does the GS have an advantage off the corner making 50 more ftlbs of torque at peak though?
Off the corner I don’t think it would matter, in road racing in the Z06 you’ll just make sure you’re in whatever gear gets you into your power band. So if there’s a situation where the GS is out torquing you in a Z06, shift down a gear so you’re coming out of the corner at 5,500 instead of 3,000. The hp advantage will still carry the day.
It’s all speculation at this point but I just don’t think there’s a scenario where a GS would beat a Z06 on a road course. Possible GS advantage in autoX because you’re always in low gears and low revs. It’s power to weight in the end; any scenario where the Z06 is able to stay in its power band, it’s going to be ahead. It’s just a more powerful car top end.
Grand Sport vs Z06 from rolling start?
