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C6 Corvette ZR1 & Z06General info about GM’s Corvette Supercar, LS9 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track
Apologize for not keeping up with this thread. Didn't realize the debate was still raging. As my post indicates I am merely stating the weights of my personal cars. Not trying to make any broad based claims relative to other reports. I will say I am the type of gearhead and math nut that gets deep into details. As I examine the differences in my cars I try to pinpoint reasons for variances in equipment and any impact they have on performance. To that end I think its best to evaluate the Z07, which is merely an option on the Z06, in order to understand what changes it has on a 2011 (the year of my car) Z06. The published package includes the CC rotors, including brake calipers, magnetic shocks, 19/20 inch competition gray ZR1 wheels, and black colored headlight bezels. In addition I have discovered the radiator has been upgraded, I think to those found on the ZR1, and the roof is painted black (again at least on mine and some others I have seen). If there are other changes and there could be, I am not aware of them.
After weighing each wheel on a scale, with the tire, I only found about a 1 lb difference per wheel compare to my 18/19 inch chrome Spyders on my 2009 JSB Z06. I personally changed out my rear two magnetic shocks last year and found them only very slightly heavier than the standard shocks on my JSB Z06. I don't believe the different colored paint on the headlamps or the roof have any impact on weight. I have not weighed the radiator to compare it but again I would be surprised if the difference, plus or minus would be worth more than a couple of pounds. What we are left with is the brakes. I purchased a set of spare front CC brake assemblies for my 2009 track Z06 in anticipation of needing them. Each front rotor weighs half of the standard Z06 rotor, 13 lbs vs 26 lbs. I also have a pair of lightweight, not the HD track versions, of Coleman front Z06 rotors (slated for the JSB car since I have been so impressed on the effect of the CC rotors on unsprung and rotational weight on ride, handling, and quick turn in) which weigh 16 lbs apiece vs I think about 20 lbs for the HD versions. I have noticed no appreciable difference in the front calipers weight between the CC versions and the standard Z06 ones. I have not weighed the rear CC rotors but expect the 13 lb difference of the fronts might be somewhat less. The net result for the brakes alone is an almost 50 lb weight saving over a stock Z06.
Conclusions: Anyone who thinks when you add the Z07 option to a Z06 somehow adds 80 to 100 lbs in overall weight when the brakes alone save 50 lbs, meaning a net 130 to 150 lb weight gain, went to a school that taught math very different to my high school and college. That is the kindest way I can express that. I too have seen "published Z07 GM weights". All I can say is I have never confirmed those high weights myself and I do believe that no one is above making errors, including GM or those sources. I think understanding the differences in the car that the Z07 option makes is absolutely necessary to accept any weight impact, up or down. Also I can't stipulate any weight for the Carbon edition since I don't own one. However I know one of the changes over mine is the carbon fiber B92 hood. I have one on my 2013 427 convertible as well as one, with the clear window added, on my 2010 ZR1. I also own 2 more CF ZR1 hoods I have bought used in the last 2 years, which weigh 15 lbs less than a stock fiberglass hood. I don't think the change in interior materials will have any impact on weight. I am left to surmise all else being equal I would expect a carbon edition would weigh 10 to 15 lbs lighter than my Z07.
Finally to the question of the weight of my 2010 ZR1. When comparing it to my Z07 which uses the same rotors and calipers, I come up with a roughly 200 lb difference in weight between the two cars. I suspect the engine with the addition of the supercharger and all its attendant plumbing is probably the biggest source of that weight gain. The dual disc clutch might add a little but that is just a guess. I haven't tried to pinpoint the differences because other than a change to a CF rimmed steering wheel, I have left the car bone stock and just enjoy driving it. I will say it feels much more front wheel heavy and gentler to drive, excluding the massive power delivery once that right pedal is engaged more than slightly. The Z's feel more raw and that pull to 7,000 RPM in second, third, and fourth, especially once the motor has been modded and 125 or more horsepower has been added, is nothing less than addicting. Tire hook up has been the limiting factor for me for street driving. On the track, slicks really help that issue but now managing the velocities achieved on tight tracks adds a whole new element, especially for someone of an advanced age like me who has always dealt with not enough fear for my own good.
I hope this longish posts adds some meat to the bones of my earlier post for those who wanted it.
Best to all
Last edited by passagemaker43; 01-23-2021 at 10:39 PM.
I owned a 2009 Z06 1LZ with mods as follows. GM Spyder wheels , non run flat Michelins, B92 hood. Kooks LT with cats and Corsa exhaust. Weight with 1/4 tank of gas was 3095 lbs. Spyder wheels are heavy so probably could have saved some there. GM curb weight in stock configuration was listed at 3190.
My 06 z06 was 3050lbs with 1/8 tank has everything stock.
3000lbs with sway bars removed and trunk carpet removed and an aftermarket lighter axle back. 1/8th tank of fuel. That was my setup on the way to the track.
Didn't realize there was more life in this thread. Quick update, I weighed my 2009 3LZ Z06 in late August with 1/2 tank of fuel at an even 3200 lbs. That car also has the stock Spyder wheels but is completely stock except for a Callaway CAI and a tune (no weight savings there). The next day I weighed my Z07. After adjusting for more than 1/2 tank of fuel, and realizing it is also a 3LZ, it weighed 3203 lbs. However it does have a B92 hood and aftermarket wheels that are about 5 lbs lighter than stock that when combined save 32 lbs. At least for these two examples, both close to stock and with 3LZ interiors, The Z07 option appears to add a total of 35 lbs to the weight of a stock Z06.
As I have said before, despite being slightly heavier the major reduction in unsprung weight makes the Z07 feel much lighter and quicker to respond.
I am in Fl now so when I get a chance I am going to weigh my ZR1 and will post it here.
Didn't realize there was more life in this thread. Quick update, I weighed my 2009 3LZ Z06 in late August with 1/2 tank of fuel at an even 3200 lbs. That car also has the stock Spyder wheels but is completely stock except for a Callaway CAI and a tune (no weight savings there). The next day I weighed my Z07. After adjusting for more than 1/2 tank of fuel, and realizing it is also a 3LZ, it weighed 3203 lbs. However it does have a B92 hood and aftermarket wheels that are about 5 lbs lighter than stock that when combined save 32 lbs. At least for these two examples, both close to stock and with 3LZ interiors, The Z07 option appears to add a total of 35 lbs to the weight of a stock Z06.
As I have said before, despite being slightly heavier the major reduction in unsprung weight makes the Z07 feel much lighter and quicker to respond.
I am in Fl now so when I get a chance I am going to weigh my ZR1 and will post it here.
I owned a 2009 Z06 1LZ with mods as follows. GM Spyder wheels , non run flat Michelins, B92 hood. Kooks LT with cats and Corsa exhaust. Weight with 1/4 tank of gas was 3095 lbs. Spyder wheels are heavy so probably could have saved some there. GM curb weight in stock configuration was listed at 3190.
When I sold my chrome Spyder wheels, the 4 combined wheels weighed 14.8 lbs heavier than the Speedlines. All were weighed on a UPS scale.
Not sure where some of these numbers are coming from for the C6ZR1?
My 2010 C6Z06 weighs 3100 Ibs...2LZ. The base 10 Z06 weighs 3080 lbs.
The 10 ZR1 base weight is listed in multiple data sources as 3333 lbs. The average contented 10 ZR1 weighs 3500+ lbs as delivered or about 400 lbs MORE than the 10 Z06. The ZR1 is carrying significantly more weight and it is not 100-200 lbs but about 400 lbs.
"The Corvette ZR1 uses the same aluminum chassis structure as the Z06 and incorporates even more carbon-fiber body parts, including the roof panel, but the there's a weight penalty for the LS9 engine's intercooled supercharger system. The ZR1 tips the scales at 3,333 pounds base, but all that extra weight isn't attributable to the blower. It has an even larger rear-differential carrier than the Z06, as well as other heavier-duty--emphasis on heavier--drivetrain components. Then again, with a power-to-weight ratio of 5.22:1, or 1 hp for every 5.22 pounds, the ZR1 can outpace all but a few race-car-derived production vehicles".
Not sure where some of these numbers are coming from for the C6ZR1?
My 2010 C6Z06 weighs 3100 Ibs...2LZ. The base 10 Z06 weighs 3080 lbs.
The 10 ZR1 base weight is listed in multiple data sources as 3333 lbs. The average contented 10 ZR1 weighs 3500+ lbs as delivered or about 400 lbs MORE than the 10 Z06. The ZR1 is carrying significantly more weight and it is not 100-200 lbs but about 400 lbs.
"The Corvette ZR1 uses the same aluminum chassis structure as the Z06 and incorporates even more carbon-fiber body parts, including the roof panel, but the there's a weight penalty for the LS9 engine's intercooled supercharger system. The ZR1 tips the scales at 3,333 pounds base, but all that extra weight isn't attributable to the blower. It has an even larger rear-differential carrier than the Z06, as well as other heavier-duty--emphasis on heavier--drivetrain components. Then again, with a power-to-weight ratio of 5.22:1, or 1 hp for every 5.22 pounds, the ZR1 can outpace all but a few race-car-derived production vehicles".
Sorry, but your wrong on... basically everything. Essentially every single automotive magazine, GM, and every corvette forum thread regarding curb weights prove you wrong. It's cute that you think your 2010 ZO6 weighs 30lbs less than the lightest year ZO6 which is 2006.
Sorry, but your wrong on... basically everything. Essentially every single automotive magazine, GM, and every corvette forum thread regarding curb weights prove you wrong. It's cute that you think your 2010 ZO6 weighs 30lbs less than the lightest year ZO6 which is 2006.
Do me a favor and argue with Motortrend, Car and Driver, and the ultimate specs, with links attached above....Not me.
Do me a favor and argue with Motortrend, Car and Driver, and the ultimate specs, with links attached above....Not me.
Your Car and Driver link says the ZR1 weighs 3333lbs, not the 3500 you claim. Couldn't find the 2010 ZR1 specs but here are a couple Motor Trend links that also contradict your claims. The first states the 2009 ZR1 weighs 3364lbs and the second says the 2011 ZR1 weighs 3329lbs.
Your Car and Driver link says the ZR1 weighs 3333lbs, not the 3500 you claim. Couldn't find the 2010 ZR1 specs but here are a couple Motor Trend links that also contradict your claims. The first states the 2009 ZR1 weighs 3364lbs and the second says the 2011 ZR1 weighs 3329lbs.
Friend's 09 Z06..mine is a 10 Z06
Pretty hard to argue with facts.....boss
Sep 22, 2008
Mine was weighed at Bowling Green.
Front is 1599lbs
Rear is 1479lbs
Total 3078 lbs
So according to your logic a base 2010 ZO6 1LZ must weigh somewhere around 2900lbs. Crazy that Chevy would add a couple hundred pounds to the advertised curb weight.
He got us, guys. No disagreeing with the "facts." Chevy has never been wrong about anything and the scales were DEFINITELY calibrated accurately on Chevy grounds right before he weighed them.
So according to your logic a base 2010 ZO6 1LZ must weigh somewhere around 2900lbs. Crazy that Chevy would add a couple hundred pounds to the advertised curb weight.
He got us, guys. No disagreeing with the "facts." Chevy has never been wrong about anything and the scales were DEFINITELY calibrated accurately on Chevy grounds right before he weighed them.
I have a suggestion for you and the "guys", "when you are in a hole, stop digging"...........
I never stated the Base C6Z06 weighs 2,900 lbs...please don't infect me with "your logic".
Again, facts matter, boss! The advertised base weight of the earlier Z06's (08/09/10) was, drum roll, by GM/Chevrolet, 3080 lbs. Go tell GM you know better and they need to set the record straight since you are the official weight guru for C6 corvettes.....
01-23-2021, 10:10 PM
