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2020+ Shelby GT500 Mustang
2020 Shelby GT500 Mustang - 10.61@133 MPH - Press Drive Articles/Vids
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<blockquote data-quote="tt335ci03cobra" data-source="post: 16318129" data-attributes="member: 68944"><p>1. I would buy a viper acr-e before I’d buy a gt500 personally. That said, I would be buying both within a small window of time. One is a beast the other is a jeckle hide car. I’d drive a gt500 more often but have more fun in the viper on back roads I think. I also love the c7 zr1 with a manual. I would love a new gt500 with a tr6070. I’m old school but call it as I see it.</p><p></p><p>2. This is all bench racing, and opinion. I said that already. I’ve driven a few cars on track. I’ve driven and riden some nice cars on back roads. You have more real world experience than me. Guaranteed. These are my opinions and thought. Already stated so.</p><p></p><p></p><p>Braking:</p><p></p><p>Better potential to decelerate speed as a system. Much better potential to shed speed over shitty surfaces.</p><p></p><p>16.5” rotor is a huge swept area. The rolling stock is crucially ~5-10lbs lighter per corner. The downforce may negatively effect braking of the acr at speeds above 100mph compared to the gt500 because the car is effectively heavier by hundreds of lbs with smaller 15.4” rotors to alleviate the stresses while working on woahing about 60lbs of additional unsprung outboard weight. Edit 57lbs*</p><p></p><p>Viper acr: Front tire is 27lbs, rear is 41lbs. Wheels are 26/27.8lbs</p><p></p><p>Total unsprung outboard weight is 243lbs.</p><p></p><p><a href="https://driveviper.com/forums/threads/13387-ACR-Wheel-amp-Tire-Weights" target="_blank">ACR Wheel & Tire Weights</a></p><p></p><p><a href="https://m.tirerack.com/tires/Spec.jsp?tireMake=Kumho&tireModel=Ecsta+V720+ACR&frontTire=925YR9V720ACR&partnum=925YR9V720ACR&rearTire=53YR9V720ACR&autoMake=Dodge&autoYear=2017&autoModel=Viper+ACR&autoModClar=" target="_blank">https://m.tirerack.com/tires/Spec.jsp?tireMake=Kumho&tireModel=Ecsta+V720+ACR&frontTire=925YR9V720ACR&partnum=925YR9V720ACR&rearTire=53YR9V720ACR&autoMake=Dodge&autoYear=2017&autoModel=Viper+ACR&autoModClar=</a></p><p></p><p></p><p>The gt500cftp: front tire is 29lbs, rear is 30lbs wheel are 17lbs each but let’s say .25 heavier for both rears (doubtful). Total unsparing outboard weight of 186lbs.</p><p></p><p><a href="https://m.tirerack.com/tires/Spec.jsp?tireMake=Michelin&tireModel=Pilot+Sport+Cup+2&frontTire=03YR0PSC2XLV7&partnum=03YR0PSC2XLV7&rearTire=13YR0PSC2XL&autoMake=Ford&autoYear=2020&autoModel=Shelby+GT500+Mustang&autoModClar=Carbon+Fiber+Track+Package" target="_blank">https://m.tirerack.com/tires/Spec.jsp?tireMake=Michelin&tireModel=Pilot+Sport+Cup+2&frontTire=03YR0PSC2XLV7&partnum=03YR0PSC2XLV7&rearTire=13YR0PSC2XL&autoMake=Ford&autoYear=2020&autoModel=Shelby+GT500+Mustang&autoModClar=Carbon+Fiber+Track+Package</a></p><p></p><p>Now take into account the stability and forgiving nature of the mag shocks vs fixed shocks on uneven or bad surfaces while braking. Advantage cftp. Knuckle geometry and front clamping is also all redone for the gt500.</p><p></p><p>But how often do you perform 60-0 stop on a circuit? How often do you perform 150-50 range stops? The viper has a much better 60-0 number, but that’s as useful as knowing a gt500 can go 5mph faster. Big whoop. You’re never gonna see either of these cars going less than 30 or more than 175 on almost any track scenario.</p><p></p><p>Let’s move on to acceleration.</p><p></p><p>Here is a 460hp mustang gt10a acceleration data.</p><p>[ATTACH=full]1607995[/ATTACH]</p><p></p><p>Here is viper acr data</p><p>[ATTACH=full]1607994[/ATTACH]</p><p></p><p>A 460hp mustang gt is only 1.7 seconds slower to 150mph than a 645hp viper acr... let that sink in. Effectively the viper acr is slow above 125mph. It’s only 6mph faster in the 1/4 mile than a gt. The gt500’s are going 133 already and I bet we’ll see 137 before too long. Lop 3-4mph off for cftp cars.</p><p></p><p>The viper can hold 1.5 g’s. The cftp can hold 1.3 g’s. At leguna or similar medium speed (50-125mph) very smooth, wide tracks, the viper is best suited. You also need to be a great driver.</p><p></p><p>In average hands, the gt500 cftp is a 10 second car and can keep up with track beasts. That’s ****ing nuts.</p><p></p><p>Caveats: throw a well programmed dct, carbon wheels, mag shocks and property redo spring rates/knuckles etc in the viper for 16.5” brakes, and although it’ll pick up 300lbs, it will be quite a bit faster. We’ve moved on from mechanical mods like aero and wide sticky tires to the nasa (space organization) esc realm of dual clutch and carbon wheels. </p><p></p><p>How do you think guys that got model t’s and 32 fords to go 12’s felt seeing a 4000lbs 70 chevelle ss go 12’s with just a tire or guys with 2300lbs 65 Shelby daytona’s felt seeing a 3600lbs c4 corvette zr1 hit sears point etc felt...</p></blockquote><p></p>
[QUOTE="tt335ci03cobra, post: 16318129, member: 68944"] 1. I would buy a viper acr-e before I’d buy a gt500 personally. That said, I would be buying both within a small window of time. One is a beast the other is a jeckle hide car. I’d drive a gt500 more often but have more fun in the viper on back roads I think. I also love the c7 zr1 with a manual. I would love a new gt500 with a tr6070. I’m old school but call it as I see it. 2. This is all bench racing, and opinion. I said that already. I’ve driven a few cars on track. I’ve driven and riden some nice cars on back roads. You have more real world experience than me. Guaranteed. These are my opinions and thought. Already stated so. Braking: Better potential to decelerate speed as a system. Much better potential to shed speed over shitty surfaces. 16.5” rotor is a huge swept area. The rolling stock is crucially ~5-10lbs lighter per corner. The downforce may negatively effect braking of the acr at speeds above 100mph compared to the gt500 because the car is effectively heavier by hundreds of lbs with smaller 15.4” rotors to alleviate the stresses while working on woahing about 60lbs of additional unsprung outboard weight. Edit 57lbs* Viper acr: Front tire is 27lbs, rear is 41lbs. Wheels are 26/27.8lbs Total unsprung outboard weight is 243lbs. [URL='https://driveviper.com/forums/threads/13387-ACR-Wheel-amp-Tire-Weights']ACR Wheel & Tire Weights[/URL] [URL]https://m.tirerack.com/tires/Spec.jsp?tireMake=Kumho&tireModel=Ecsta+V720+ACR&frontTire=925YR9V720ACR&partnum=925YR9V720ACR&rearTire=53YR9V720ACR&autoMake=Dodge&autoYear=2017&autoModel=Viper+ACR&autoModClar=[/URL] The gt500cftp: front tire is 29lbs, rear is 30lbs wheel are 17lbs each but let’s say .25 heavier for both rears (doubtful). Total unsparing outboard weight of 186lbs. [URL]https://m.tirerack.com/tires/Spec.jsp?tireMake=Michelin&tireModel=Pilot+Sport+Cup+2&frontTire=03YR0PSC2XLV7&partnum=03YR0PSC2XLV7&rearTire=13YR0PSC2XL&autoMake=Ford&autoYear=2020&autoModel=Shelby+GT500+Mustang&autoModClar=Carbon+Fiber+Track+Package[/URL] Now take into account the stability and forgiving nature of the mag shocks vs fixed shocks on uneven or bad surfaces while braking. Advantage cftp. Knuckle geometry and front clamping is also all redone for the gt500. But how often do you perform 60-0 stop on a circuit? How often do you perform 150-50 range stops? The viper has a much better 60-0 number, but that’s as useful as knowing a gt500 can go 5mph faster. Big whoop. You’re never gonna see either of these cars going less than 30 or more than 175 on almost any track scenario. Let’s move on to acceleration. Here is a 460hp mustang gt10a acceleration data. [ATTACH=full]1607995[/ATTACH] Here is viper acr data [ATTACH=full]1607994[/ATTACH] A 460hp mustang gt is only 1.7 seconds slower to 150mph than a 645hp viper acr... let that sink in. Effectively the viper acr is slow above 125mph. It’s only 6mph faster in the 1/4 mile than a gt. The gt500’s are going 133 already and I bet we’ll see 137 before too long. Lop 3-4mph off for cftp cars. The viper can hold 1.5 g’s. The cftp can hold 1.3 g’s. At leguna or similar medium speed (50-125mph) very smooth, wide tracks, the viper is best suited. You also need to be a great driver. In average hands, the gt500 cftp is a 10 second car and can keep up with track beasts. That’s ****ing nuts. Caveats: throw a well programmed dct, carbon wheels, mag shocks and property redo spring rates/knuckles etc in the viper for 16.5” brakes, and although it’ll pick up 300lbs, it will be quite a bit faster. We’ve moved on from mechanical mods like aero and wide sticky tires to the nasa (space organization) esc realm of dual clutch and carbon wheels. How do you think guys that got model t’s and 32 fords to go 12’s felt seeing a 4000lbs 70 chevelle ss go 12’s with just a tire or guys with 2300lbs 65 Shelby daytona’s felt seeing a 3600lbs c4 corvette zr1 hit sears point etc felt... [/QUOTE]
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2020 Shelby GT500 Mustang - 10.61@133 MPH - Press Drive Articles/Vids
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