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Old 07-05-2012, 12:36 PM   #18
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For sure replacing the Headers and the Stock exhaust will easily take off about 100 pounds or even more, depends with what you will be replacing.
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Old 07-08-2012, 01:43 AM   #19
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Things you can do to drop weight without sacrifice of safety or comfort.

Battery -10 lbs
Exaust -30 lbs
Air box -5 lbs
Driveshaft -15 lbs
Flywheel -10lbs
CF hood -5 to 10lbs
CF trunk -5 lbs
Racing seats 25lbs per seat
K-Member -15lbs

Thats roughy 100-150 lbs of weight. If im off on the numbers please correct me. These are the only things i would consider doing because they dont effect the safety, or drivability of the car. Doing stuff like removing the AC, or sound deadening material or bumpers interior is a deal beaker.

Youre never gonna be able to drop enough weight to catch or be on par with the Shelby due to the IRS.

Combine this with a kenne bell and you have a ZL1 capable of killing a Shelby in all facets of performance

Last edited by coanbread23; 07-08-2012 at 02:04 AM.
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Old 07-10-2012, 01:06 AM   #20
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Quote:
Originally Posted by 2012ZL1 View Post
Yeah, Its looking as if this isn't easy to do without major sacrifices. I just don't understand how on earth this car weighs so much. It doen't make sense. Its not that big.
It's STRONG. Take a goooood long stare at the differential to give you some idea. I like to use the word "dense". Lots of stuff in a relatively small area...
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Old 07-10-2012, 01:39 AM   #21
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There's basically 3 types of weight on the car; static dead weight, unsprung weight, and rotational weight. The best type to reduce is unsprung rotational as that not only reduces a small amount of dead weight, it more importantly reduces the critical spinning weight that affects the handling and delivery of power to the wheels.

Unsprung is any weight not supported by the springs, such as the wheels, brake rotors, etc. I've read various estimates of the benefits but reducing unsprung rotational weight is about roughly a 10-1 ratio of benefit; reducing 1 lb of unsprung rotational has the same effect on performance that reducing 10 lbs of dead weight does.

So rather than spend thousands on carbon fiber body panels that might reduce 20 lbs of dead weight, spend those thousands on lighter brake rotors, lighter wheels, lighter clutch/flywheel, lighter driveshaft. Most of that isn't visible compared to a CF body panel but boy will you feel the difference.

Here is a link to my build thread where I've documented my quest to reduce weight on my 2010 SS without removing seats, sound insulation, gutting it, etc. The interior is stock.

http://www.camaro5.com/forums/showth...t=45165&page=2

The gross vehicle weight right now with a full tank of gas is about 3,685 lbs. All the numbers and mods with several dyno sheets showing the results of various mods are in the thread. A lot of it would be useful info for you and you get the added benefit of knowing that what I've listed works, without you having to do the research.

I'd be real interested to see what a ZL1 would do with about 100 lbs of unsprung rotational weight removed.
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Old 07-10-2012, 01:58 AM   #22
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I changed out the battery yesterday. Smaller, 5lbs lighter, and easy. The only issue was reprogramming the windows.
I saved 30 lbs with my battery swap.
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Originally Posted by 2012ZL1 View Post
Yeah, Its looking as if this isn't easy to do without major sacrifices. I just don't understand how on earth this car weighs so much. It doen't make sense. Its not that big.
It is that big. You ever see it parked next to a Vette?
Quote:
Originally Posted by BlAcK MaMbA SS View Post
For sure replacing the Headers and the Stock exhaust will easily take off about 100 pounds or even more, depends with what you will be replacing.
Try more like 40 lbs and that's with an off road X pipe. Hell the entire stock exhaust weighs 128 lbs. The only way you ate gonna lose 100 lbs is if you run open headers.
Quote:
Originally Posted by Doc View Post
There's basically 3 types of weight on the car; static dead weight, unsprung weight, and rotational weight. The best type to reduce is unsprung rotational as that not only reduces a small amount of dead weight, it more importantly reduces the critical spinning weight that affects the handling and delivery of power to the wheels.

Unsprung is any weight not supported by the springs, such as the wheels, brake rotors, etc. I've read various estimates of the benefits but reducing unsprung rotational weight is about roughly a 10-1 ratio of benefit; reducing 1 lb of unsprung rotational has the same effect on performance that reducing 10 lbs of dead weight does.

So rather than spend thousands on carbon fiber body panels that might reduce 20 lbs of dead weight, spend those thousands on lighter brake rotors, lighter wheels, lighter clutch/flywheel, lighter driveshaft. Most of that isn't visible compared to a CF body panel but boy will you feel the difference.

Here is a link to my build thread where I've documented my quest to reduce weight on my 2010 SS without removing seats, sound insulation, gutting it, etc. The interior is stock.

http://www.camaro5.com/forums/showth...t=45165&page=2

The gross vehicle weight right now with a full tank of gas is about 3,685 lbs. All the numbers and mods with several dyno sheets showing the results of various mods are in the thread. A lot of it would be useful info for you and you get the added benefit of knowing that what I've listed works, without you having to do the research.

I'd be real interested to see what a ZL1 would do with about 100 lbs of unsprung rotational weight removed.
Hell yes, losing 66 lbs of wheel/tire made my car faster than all my bolt ons combined!
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Old 07-15-2012, 07:13 PM   #23
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interesting. Rolling stock weight first on list...
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2.55 upper, 10" lower pullies, Innovators west billet hub and sfi balancer, solid blower drive isolator, 50 mm idler kit, full length S/S headers no cats, comp cams custom grind cam, comp roller rocker trunion kit, comp push rods,dual valve springs retainers and locks, Injector dynamics ID850 inectors, Rotofab ZL1 cold air kit, Lingenfelter 160 thermostat, Rotofab intercooler reservoir, stock plugs, LS7 90mm throttle body, GTO clutch reservoir mod, my own custom catch can, Tuning by Jannetty, install by me.
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Old 07-20-2012, 12:36 AM   #24
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Are there any specifically light weight wheels you guys suggest? It's my daily driver (only driver) but would love to shave some lbs for performance!

Magnesium was used on vette once but apparently were extremely dangerous (super flammable).

How much do the p-zeros + RS rims actually weigh?
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Old 08-01-2012, 04:44 AM   #25
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Originally Posted by cam fan View Post
Are there any specifically light weight wheels you guys suggest? It's my daily driver (only driver) but would love to shave some lbs for performance!

Magnesium was used on vette once but apparently were extremely dangerous (super flammable).

How much do the p-zeros + RS rims actually weigh?
Also curious.

remove badges... 1 lb.
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Old 08-01-2012, 12:53 PM   #26
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Are there any specifically light weight wheels you guys suggest? It's my daily driver (only driver) but would love to shave some lbs for performance!

Magnesium was used on vette once but apparently were extremely dangerous (super flammable).

How much do the p-zeros + RS rims actually weigh?
Stock 20" wheels/tires weigh in at 260.6 lbs.

Here is my daily driver set up geared more towards straight line performance 196 lbs
http://www.camaro5.com/forums/showthread.php?t=151258

Here is my daily driver set up geared more towards performance in the twisties 212 lbs
http://www.camaro5.com/forums/showthread.php?t=237217

Here are the wheel tire weights of all the wheels I have had on my car.


33.3 lbs 18x4 CTS spare w/ 185/50 18 M&H radial front runners
33.6 lbs 17x5 Weld RTS w/ 185/55 17 M&H radial front runners
44.5 lbs 18x8.5 F14 w/ 245/45 18 no name tires
48.2 lbs 18x11 F14 w/ 315/30 18 Hoosier drag radial
53.0 lbs 18x10 F14 w/ 285/40 18 Goodyear F1 Supercar
53.5 lbs 18x11 F14 w/ 315/40 18 Nitto NT05R drag radial
53.8 lbs 17x10 Weld RTS w 325/45 17 M&H drag radial
54.1 lbs 18x8.5 F14 w 255/50 18 Nitto NT420S
54.5 lbs 18x11 F14 w/ 295/40 18 Falken Azenis RT-615K
56.6 lbs 18x11 F14 w/ 335/30 18 BFG G-force T/A KDW
62.3 lbs 20x8 Stock wheel w/ 245/45 20 Pirelli
68.0 lbs 20x9 Stock wheel w/ 275/40 20 Pirelli

Last edited by SUX2BU; 08-01-2012 at 01:29 PM.
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Old 08-02-2012, 01:17 AM   #27
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look at the cts spare weight. Wow good front runner..
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2.55 upper, 10" lower pullies, Innovators west billet hub and sfi balancer, solid blower drive isolator, 50 mm idler kit, full length S/S headers no cats, comp cams custom grind cam, comp roller rocker trunion kit, comp push rods,dual valve springs retainers and locks, Injector dynamics ID850 inectors, Rotofab ZL1 cold air kit, Lingenfelter 160 thermostat, Rotofab intercooler reservoir, stock plugs, LS7 90mm throttle body, GTO clutch reservoir mod, my own custom catch can, Tuning by Jannetty, install by me.
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Old 08-02-2012, 01:55 AM   #28
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look at the cts spare weight. Wow good front runner..
They are for sale.

http://www.camaro5.com/forums/showthread.php?t=240180
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Old 08-11-2012, 03:07 PM   #29
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Yeah, Its looking as if this isn't easy to do without major sacrifices. I just don't understand how on earth this car weighs so much. It doen't make sense. Its not that big.
try parking 2 of them in a 2-car garage and then tell me again how they are not that big. when i had my 3rd gen sitting in the garage next to my SS it made the 3rd gen look like an MG
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Old 08-12-2012, 01:34 PM   #30
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hmm I guess its decieving until you do a side by side, but to me 4000 lbs is more SUV weight than sportscar weight for this size of car.
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2.55 upper, 10" lower pullies, Innovators west billet hub and sfi balancer, solid blower drive isolator, 50 mm idler kit, full length S/S headers no cats, comp cams custom grind cam, comp roller rocker trunion kit, comp push rods,dual valve springs retainers and locks, Injector dynamics ID850 inectors, Rotofab ZL1 cold air kit, Lingenfelter 160 thermostat, Rotofab intercooler reservoir, stock plugs, LS7 90mm throttle body, GTO clutch reservoir mod, my own custom catch can, Tuning by Jannetty, install by me.
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Old 09-10-2012, 10:32 PM   #31
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zL1 wheels are forged and lighter than the regular Camaro 20"s.
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Old 09-11-2012, 11:48 PM   #32
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zL1 wheels are forged and lighter than the regular Camaro 20"s.
Have you taken one off and lifted it?,,,Its HEAVY.
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2.55 upper, 10" lower pullies, Innovators west billet hub and sfi balancer, solid blower drive isolator, 50 mm idler kit, full length S/S headers no cats, comp cams custom grind cam, comp roller rocker trunion kit, comp push rods,dual valve springs retainers and locks, Injector dynamics ID850 inectors, Rotofab ZL1 cold air kit, Lingenfelter 160 thermostat, Rotofab intercooler reservoir, stock plugs, LS7 90mm throttle body, GTO clutch reservoir mod, my own custom catch can, Tuning by Jannetty, install by me.
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Old 09-11-2012, 11:58 PM   #33
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Easy and reversible (but not cheap)

Cut off mufflers
Drain out windshield wiper fluid
Battery
Wheel/tires
Lightweight seats
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Old 09-19-2012, 04:57 PM   #34
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Originally Posted by coanbread23 View Post
Things you can do to drop weight without sacrifice of safety or comfort.

Battery -10 lbs
Exaust -30 lbs
Air box -5 lbs
Driveshaft -15 lbs
Flywheel -10lbs
CF hood -5 to 10lbs
CF trunk -5 lbs
Racing seats 25lbs per seat
K-Member -15lbs
I have seen differnet numbers on this site depending on brand.
Battery -19-29 lbs with Braille battery (2 versions)
Exaust -30 lbs (12 headers + 18 mufflers)
Air box -5 lbs (not sure)
Driveshaft -6 lbs, the stock weighs under 25lbs.
Flywheel -22lbs
CF hood -1lb with Seibon SF hood
CF trunk -5 lbs (not sure)
Racing seats 25lbs per seat
K-Member -15lbs
2-piece Brake Rotors - 9lbs each
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