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2015+ S550 Mustangs
2015+ S550 Mustang Talk
GT350 vs. Z/28
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<blockquote data-quote="tt335ci03cobra" data-source="post: 13906025" data-attributes="member: 68944"><p>A chassis is a chassis. Shocks, suspension arms, and drivetrain components are not a chassis.</p><p></p><p>Fox chassis 79-93 mustang </p><p>Sn95 94-2004 </p><p>S197 05-14</p><p>S550 15-xx</p><p></p><p>Those are chassis, generations usually signify the chassis change from one to the next.</p><p></p><p>The only cars in recent memory that could be considered as having had a chassis change for a special edition model would be the c6 z06 going from a steel frame to an aluminum frame. Period, that's all folks. Maybe if you are very very very very very lenient with the definition, the 03 cobra getting a recessed rear frame to accommodate larger/wider wheels in the rear as well as a whole rear subframe to accept a.... interestingly integrated irs consideration, as well as a new shocks at all corners and suspension upfront, brakes all around, rolling stock at all corners, complete interior change, nearly every body panel changed, as well as unique fuel tank, engine, wiring harness, cylinder heads, an sc, a 6spd, an aluminum shaft, different transmission cradle, etc etc etc etc etc, but honestly, even with the large extent to which an 03 cobra differed from an 03 v6 mustang, I still say it's an sn95 chassis just like the v6 is. Even when BMW offers short and long wheel base versions of it's 7 series, that's still the same chassis.</p><p></p><p>In general, I understand chassis as frame rails+floorpan+subframes etc.</p><p></p><p>Individual things that I have not heard described as a new chassis are:</p><p>-upgrading the brakes does not change the chassis</p><p>-changing the shocks, struts, springs or dampers does not change the chassis </p><p>-engine swap is not changing the chassis</p><p>-a transmission swap is not changing the chassis</p><p>-solely changing the front or rear subframe is not changing the chassis</p><p></p><p></p><p></p><p>I honestly think Darren has confused (rear) subframe, ie the rear suspension getting new subframe pick up points, shock placement, and shocks in general, as a new chassis.</p><p></p><p></p><p>A kmember is a (front) subframe upgrade. When you put a maximum motorsports, Griggs, agent 47, etc k-member on a fox, sn95-s197 mustang, it does not mean you suddenly have a new chassis. You do have a much more performance oriented and capable mustang, but it's still the same chassis as the v6/base model that sold for this given years.</p><p></p><p></p><p>The only Chevy I have heard of that has actually changed chassis for performance models is the c6 z06 and zr1 which received an aluminum monocoque vs the stamped steel of the base c6. That is indeed a chassis change imho. Even still, most corvette, Chevy and car fans in general do not say the z06 is a different chassis than the c6 because that's just awkward and confusing. It technically is a different chassis just as a teksid is a different block than an iron 03+ block, but they still call the corvette c6 the c6 chassis, and the teksid is a modular just as the 03+ iron 4.6 is a modular.</p><p></p><p>It's basically unheard of to have the frame, or rather chassis of a car changed just for a performance model. The z28 is $75,000 because Chevy can get buyers to pay that. The c6 z06 is $80-115,000 because it's basic structure is changed, and every panel is changed. I don't feel the z28 warrants it's price, however the vette definitely does.</p><p></p><p>If you want to get very technical, the camaro v6-z28, which sit on 110" wheelbases because the zeta chassis is a 15 year old sedan chassis, is less ideal than the new 2015 mustangs 107" wheelbase ground up new design for 2015.</p><p></p><p>I honestly see the 2015 gt performance/brembo package mustang being within spitting distance of a z28 on the same track, same day, assuming both have the same driver for lap times, and both are shod in the same tire compound.</p><p></p><p>No one ever states it, but the z28 rides on 305/xx/20 60 treadweae Pirelli trofeo's... It ran 7:37 with a hint of rain at the last fee bends, and back straight of the ring. (30 seconds ).</p><p></p><p>The 2013 gt500 ran 7:39 with a stick axel, albeit 662hp, with measly 265/285/xx/20 220 treadwear goodyears. </p><p></p><p>The 15 gt gets larger brakes than the 14 gt500 had, irs, double ball joint front suspension, a much stiffer chassis, 2" wider track (an inch in track is 2 in the tire), 3-4% better weight front/rear weight distribution, lower center of gravity, lower drag coefficient, etc. People will be very impressed by the 15 gt performance packs numbers. I'm done.</p></blockquote><p></p>
[QUOTE="tt335ci03cobra, post: 13906025, member: 68944"] A chassis is a chassis. Shocks, suspension arms, and drivetrain components are not a chassis. Fox chassis 79-93 mustang Sn95 94-2004 S197 05-14 S550 15-xx Those are chassis, generations usually signify the chassis change from one to the next. The only cars in recent memory that could be considered as having had a chassis change for a special edition model would be the c6 z06 going from a steel frame to an aluminum frame. Period, that's all folks. Maybe if you are very very very very very lenient with the definition, the 03 cobra getting a recessed rear frame to accommodate larger/wider wheels in the rear as well as a whole rear subframe to accept a.... interestingly integrated irs consideration, as well as a new shocks at all corners and suspension upfront, brakes all around, rolling stock at all corners, complete interior change, nearly every body panel changed, as well as unique fuel tank, engine, wiring harness, cylinder heads, an sc, a 6spd, an aluminum shaft, different transmission cradle, etc etc etc etc etc, but honestly, even with the large extent to which an 03 cobra differed from an 03 v6 mustang, I still say it's an sn95 chassis just like the v6 is. Even when BMW offers short and long wheel base versions of it's 7 series, that's still the same chassis. In general, I understand chassis as frame rails+floorpan+subframes etc. Individual things that I have not heard described as a new chassis are: -upgrading the brakes does not change the chassis -changing the shocks, struts, springs or dampers does not change the chassis -engine swap is not changing the chassis -a transmission swap is not changing the chassis -solely changing the front or rear subframe is not changing the chassis I honestly think Darren has confused (rear) subframe, ie the rear suspension getting new subframe pick up points, shock placement, and shocks in general, as a new chassis. A kmember is a (front) subframe upgrade. When you put a maximum motorsports, Griggs, agent 47, etc k-member on a fox, sn95-s197 mustang, it does not mean you suddenly have a new chassis. You do have a much more performance oriented and capable mustang, but it's still the same chassis as the v6/base model that sold for this given years. The only Chevy I have heard of that has actually changed chassis for performance models is the c6 z06 and zr1 which received an aluminum monocoque vs the stamped steel of the base c6. That is indeed a chassis change imho. Even still, most corvette, Chevy and car fans in general do not say the z06 is a different chassis than the c6 because that's just awkward and confusing. It technically is a different chassis just as a teksid is a different block than an iron 03+ block, but they still call the corvette c6 the c6 chassis, and the teksid is a modular just as the 03+ iron 4.6 is a modular. It's basically unheard of to have the frame, or rather chassis of a car changed just for a performance model. The z28 is $75,000 because Chevy can get buyers to pay that. The c6 z06 is $80-115,000 because it's basic structure is changed, and every panel is changed. I don't feel the z28 warrants it's price, however the vette definitely does. If you want to get very technical, the camaro v6-z28, which sit on 110" wheelbases because the zeta chassis is a 15 year old sedan chassis, is less ideal than the new 2015 mustangs 107" wheelbase ground up new design for 2015. I honestly see the 2015 gt performance/brembo package mustang being within spitting distance of a z28 on the same track, same day, assuming both have the same driver for lap times, and both are shod in the same tire compound. No one ever states it, but the z28 rides on 305/xx/20 60 treadweae Pirelli trofeo's... It ran 7:37 with a hint of rain at the last fee bends, and back straight of the ring. (30 seconds ). The 2013 gt500 ran 7:39 with a stick axel, albeit 662hp, with measly 265/285/xx/20 220 treadwear goodyears. The 15 gt gets larger brakes than the 14 gt500 had, irs, double ball joint front suspension, a much stiffer chassis, 2" wider track (an inch in track is 2 in the tire), 3-4% better weight front/rear weight distribution, lower center of gravity, lower drag coefficient, etc. People will be very impressed by the 15 gt performance packs numbers. I'm done. [/QUOTE]
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