New rules/Camaro 1le

[01badz28]

The 6.2 has a hell of a good torque curve compared to the earlier 5.7s. Doesn't help though when the car weighs as much as a late '90s Impala and there is no way to fit competitive tires within the stock rule set.

[jcox07]

My first gear goes to 55 and second to 90 and I vet it out of first as soon as I can and leave it in second and it has plentyyyyyy of power and torq.....

[01badz28]

My first gear goes to 55 and second to 90 and I vet it out of first as soon as I can and leave it in second and it has plentyyyyyy of power and torq.....

Yup, pretty much the same with any of these types of cars. If you are leaving it in first you are doing something wrong.

[John Brown]

My first gear goes to 55 and second to 90 and I vet it out of first as soon as I can and leave it in second and it has plentyyyyyy of power and torq.....

Yup, pretty much the same with any type of car. If you are leaving it in first you are doing something wrong.

totally agree!! but see it all the time..

[dewittpayne]

My first gear goes to 55 and second to 90 and I vet it out of first as soon as I can and leave it in second and it has plentyyyyyy of power and torq.....

Can you say 'supercharger'? Looking at the torque curves (see below), a stock 2011 GT500 has ~450 ft lbs of torque at 3,000 rpm, an LS3 has 325 ft lbs and a 5.0 Mustang is 300 ft lbs. The only reason you're in ESP rather than ASP with the ZL1's is that the 2010 is about 300 lbs heavier than the 2011+ GT500's. Your second gear is about the same as my third gear. If I run in third, I don't have plenty of torque.

Numbers (theoretical, but the real numbers shouldn't be in the same proportion):
At the rear axle in second gear that's a torque of 2.66 x 3.31 x 300 = 2641 ft lbs for the Mustang 5.0, 1.78 x 3.91 x 325 = 2261 for the Camaro and 1.78 x 3.55 x 450 = 2843 ft lbs for a GT500. Now factor in taller tires and higher weight for the Camaro and it's even worse. The 285/35/20 tires on the Camaro have a diameter of 27.9 inches, that's a radius of 1.1625 feet so the force at the pavement is 2261/1.1625 = 1945 lbs, using curb weight of 3875 lbs, that's a theoretical maximum acceleration of 0.51 g. My Dunlops are 275/35/19 for a diameter of 26.6 for a radius of 1.1083 feet and the force at the pavement at 3,000 rpm is 2641/1.1083 = 2383 or 2383/3600 = 0.66g. Given that the static load on the rear end is less than half the curb weight, I'm probably into wheel spin unless I can get some weight transfer from the acceleration. If you tell me what size tires you run, I can factor that in for your car too.

Stock 2011 GT500



Stock LS3, red curve



Stock Mustang 5.0

[dewittpayne]

Back calculating from a top speed of 90 mph at 6250 rpm gives a radius of 1.274 feet and force at the pavement of 2843/1.274=2231 lbs for the GT500. That's 12% higher than the Camaro. The Mustang is higher, but it has difficulty putting that force to the pavement without tire spin, even with Hoosiers.

A radius of 1.274 is larger than any A6 tire that Hoosier makes, so either your redline is higher than 6250 rpm or your top speed in second gear is less than 90 mph. The largest Hoosier diameter is 26.8 inches for a radius of 1.1167 feet and a force at the pavement of 2546 lbs. That makes more sense. That's 752.5 revolutions/mile or a speed at 6250 rpm of 79 mph.

[jcox07]

No the reason the 2010 GT500 didn't go to asp is it does not have the track pack like the 2011-14 does. The track pact and adjustability is why the 2011-14 went to asp.

[John Brown]

No the reason the 2010 GT500 didn't go to asp is it does not have the track pack like the 2011-14 does. The track pact and adjustability is why the 2011-14 went to asp.

no dog in this fight.. but..
does anybody go to ASP these days with stock suspension?? That sounds like "This or that car goes to Prepared because it comes with 9 in rims..." not like that's gonna be used in the class...

however... 300 lbs ??? day-yumm!! where did they get all that out?

[dewittpayne]

What's in the track pack that you can't put on your car under the Street Prepared rules? You must be talking about the move from FS to AS with the stock suspension. I still think 300 lbs less weight is the major contributing factor.

[jcox07]

I agree JB the first thing I would do with a 2011 or newer mustang would be rip out the so called track pack on any mustang no matter if it was a gt500 or not.

[dewittpayne]

I agree JB the first thing I would do with a 2011 or newer mustang would be rip out the so called track pack on any mustang no matter if it was a gt500 or not.

If you're going to Street Prepared, buying the track pack option is a waste of money.

[jpvette]

Since the topic was a 1le Camaro being a contender on streets: I assume by the responses that it is not. For what its worth a gt 500 and the Camaro weigh about the same, also the 1le package has different gearing than a regular ss (3.73) I think. I have been looking at a 2012 gt500 also, another heavy car on streets. c5/zo6 are starting to look pretty good now. Half the price of the other cars.

[01badz28]

Since the topic was a 1le Camaro being a contender on streets: I assume by the responses that it is not. For what its worth a gt 500 and the Camaro weigh about the same, also the 1le package has different gearing than a regular ss (3.73) I think. I have been looking at a 2012 gt500 also, another heavy car on streets. c5/zo6 are starting to look pretty good now. Half the price of the other cars.

Kind of hard to beat, and it will leave a 5th gen in the dust.

I'm LOLing at the dyno charts. 430 rwtq at 2000 RPM FTW (shut up JY ).

[MARKP]

430 rwtq at 2000 RPM FTW (shut up JY ).

This comment is worthless unless you can prove the car actually runs.

[dewittpayne]

Ryan,

I'm LOLing at the dyno charts. 430 rwtq at 2000 RPM FTW (shut up JY ).

It's 430 ft lb @ 3,000 rpm, not 2,000. That seems quite reasonable considering the 8 psi boost pressure at that rpm.