TLS_Addict

Just throwing that in there.

mfj427

Yeah i think she is the heaviest gal at the party. That's OK to me, 12 second rag top is pretty awesome! ZR1 weight?

Man a 427 in a proposed Z28 Camaro concept might leave ruts in the black top.

mfj427

Whoops ZR1 3395lb got it. Big mama.

JoesC5

What GM's numbers do show if the relative weight differences between the models. I doubt Gm specs the weight of one model with a full tank of gas, another with an empty tank of gas, another stripped and another fully loaded.

GM does show the curb weight, which by defination is with full fluids, less any cargo. Some manufactures do show the dry weight which is without any fluids.

While GM does list the Z06's curb weight as 3175 under "dimensions", they also say "Z06 weighs in at 3,199 lbs. curb and 3,041 lbs. dry, making it the lightest of the 2013 Corvette models." at http://www.chevrolet.com/corvette-z06-sports-car.html

If one want's to know the weight of their car, look on the drivers door and see what the GVWR is and then subtract 423 lbs from that number. For example my 2009 Z06, 2LZ with NAV and chrome spiders has a GVWR of 3651 lbs. Subtract 423 lbs and you can see that my Z06 weighs 3228 lbs(full of all fluids).

C7/Z06 Man

Car & Driver article on the new Viper/ZR1 has the ZR1 at 3353 lbs. and the Viper kicking it's butt in the 1/4 mile with an 11.5 to the ZR1's 11.6 et.

Side note, I do like the GVWR sticker thing on the door - 423 lbs. to get the weight. I'm going to check mine out. Thanks JoesC5

PS: Are the GVWR individualized for every single car or no? I know that a narrow body coupe has to weigh different between the auto and the stick.

JoesC5

I believe they are for like cars with the same options, etc. I compared my car to another 09 and it's GVWR was 1 pound higher then mine.

I also compared my 09 to a 13 Z06 and it's GVWR was 42 pounds higher then mine, but it was optioned different.

TLS_Addict

The Vert is heavier, no questions about it, but where is the weight?

Remember, part of the pass is being able to hook up. I have seen guys put weight in the back of cars to help them hook up and they end up running a faster time even though they are slightly heavier.

C7/Z06 Man

3778 lbs. (GVWR from driver door)
-423 lbs. (occupants total weight)
3355 lbs. (Curb weight)
+260 lbs. (Driver weight)
3615 lbs. (Total road weight)


Stock Grand Sport record= I checked my original post (#5128) in the 1/4 mile section and I was running a full tank of gas, I filled the tank just before going in so I was at the approx. 3355 lbs. curb weight and than add the Fat Man 260 for a total weight of 3615 lbs. to set the "factory stock" Grand Sport still current record.

Bolt-on record= No mention of gas amount in the original post (5572) and I remember that the tank was not full. However, by that time I had added some stuff to what I carry around "all" the time in the car i.e. jumper cables, tire repair kit, air pump, 4 pucks, car jack, frame hooks, hand tools to remove rims and a couple fiber towels all tucked into the two rear compartments.
My bolt-ons included headers which lighten the car and with less gas I am sure the weight fell far short of the total 3615 lbs. I just calculated using the GVWR door sticker for the "Stock" record.

Bentley's Folly

I've had my new 427 (#371) at the strip 3 nights for "test and tune" sessions this summer for a total of 9 passes. My best time was 12.0081 @117.5 mph, with a 60' time of 1.9146 on its OEM tires. The time and mph might sound a little slow but were recorded at Thompson Raceway park near Cleveland, Ohio. The elevation there at the starting line is 1142' above sea level. Elevation (and humidity) DO have significant impact on a car's performance. My son and I read test results from most every magazine out there and scrutinize the supporting data (temp, humidity, and elevation) on every road test. My 427's SHIPPING weight (on the factory invoice) is 3307#. I interpret shipping weight to be the car's weight with 2 or 3 gallons of gas and is recorded before loading on the transporter. Assuming that a C6 ZO6 is 150 to 200 pounds lighter, they should be a tenth or two quicker than my car. The few ZO6's that I've seen run at Thompson run 11.70s and 11.80s on street tires. We all see amazing times posted in magazines and on this forum, but many of them are at tracks which are at near sea level like Englishtown in N.J. My times next summer WILL improve!!!

mau

Pretty good times!! Thanks for posting!!

Supersonic 427

According to the '13 Corvette brochure the 1/4 mile times for a 427 Convertible is: 11.8 seconds @123MPH. 0-60...3.8 sec. Top Speed is 190 MPH
Skid pad..1.04g
Weight...3355

The Z06.....1/4 mile...11.7 sec.@125 MPH 0-60...3.7 sec. Top speed ..198 MPH
Skid pad...1.04g (1.13 with Z07 pkg.)
Weight...3199

Base price for 427 Convertible which includes 2 LT pkg. NPP and Magnetic ride control...$76,900
Z06....$76,575. Magnetic ride control...$2475 option.

HHughes1

The nature of each 427 owner will be as diverse as the number of cars sold but in general you may be correct about the 427 appealing to folks who are not the hard core track junkies that some Z06 and ZR1 owners may be. You seem to be very offended that someone might pass off a 427 as a "Z06 Convertible". Frankly, I have not heard that type of discussion from any 427 owner but it pops up on occasion from Z06 owners????? Legally, a 427 is not permitted on any sanctioned drag strip or road course due to it's lack of rollover protection. I bought the car for the specific purpose of having a great open air vehicle that could match the performance of any other maker's convertible within sight of this price range. The fact that there is no additional cost over a Z06 was great as well, trading ultimate performace for the vert lifestyle. Does this mean that I might scare myself if I accidently step on the go pedal to firmly???? Comments like that are assinine and do nothing constructive for this forum. I would think there are many 427 owners myself included that have plenty of drag strip and or road course experience in other cars (see below) and wanted a high performance vert for a different purpose.

Mike Campbell

Having run in the Challenge at Englishtown for 8 years and seeing what reality is versus some "guesstimates" posted on this forum are two different things. Robert, your times are excellent, especially for first time out. It takes a lot to get consistant enough to get a stock ZO6 into the 11's let alone down to 11.5's. There are many, who have mastered it, but, it takes a lot of seat time and usually with better tires. I would imagine, that in a year or two we'll start to see the 427 verts down into the 11.7-11.8 times as people get used to their cars and tracks, plus, some do get rollbars. As for weight, it is important, but, a car with 3/4 to full tank of gas always runs better because of where the weight it...over the rear axle. Also, most decent tracks have a weight scale that you can check it at that time. I for one, especially after this Holiday Season need to go on a bigass diet!

pmartjr

Does anyone really care that much about what their car in particular will do for performance? To me, knowing that it is CAPABLE of doing those times is enough for me. I don't think any of the advertised times are bogus or inflated in any way. I posted the Youtube videos in an earlier post that clearly shows the car performing to nearly identical numbers as those advertised by Chevrolet. Is anyone really going to quibble over a tenth here and there? This is one hell of a convertable, period! And why compare it to a Z06 all the time. Of course the lighter coupe is going to slightly out perform the convertable with the same driver. Perhaps someone can talk Randy Pobst into driving both for a future comparison and we'll put this to bed. I have raced competition karts nearly all my life and won many national championships in the process. I don't have the need to prove my driving skills to anyone. I know pretty well where I stand. My 427 is going to satisfy my driving experence needs just perfectly. It handles better than my previous dream car, my Acura NSX-T and is much faster by far than anything I have ever owned. Just driving down the road with the top down and pipes singing is what brought me to this car at this time in my life.

TLS_Addict

Yes, because most people say "My car can run ______ time." Usually my response is "Not with you driving it."

It seems that with Corvette owners (not all but in general) they will brag about the capabilities of their cars and look down on others car if they are rated at a lower level of performance. I see it all the time when Corvette owners say "Pff.....its just a Mustang 5.0. I am lighter and have a little more horse power and a higher top speed." Most often I find that the 5.0 drivers are faster at the track stock than most Corvette owners are stock.

LS3 cars are capable of 11s on a good track with a great driver....not every single time but have hit those numbers. I am not capable of that, yet. Thats why I plan to practice a lot. Knowing what your car runs with you driving it is all you can really bragg about to someone, not what someone else has done with the same car off the production line.

I do think that GM inflates their times for some vehicls but I think most companies do. In the case of the 427 Vert....I dont think they inflated anything.

You see people bash the ZL1 Camaro and they are running low 12s. Let people get used to them and they will hit better times. Just like the 427 Vert.

I wouldnt buy a 427 vert as a drag or track car. I would buy it because its bad mamma jamma and looks amazing.

JMills

Had mine weighed-- empty tank---3433!

mfj427

.


Amen!

Supersonic 427

I think the 1/4 mile numbers and other numbers posted in the brochure were actually achieved. The numbers I am sure were done with a professional driver with several attempts with all the optimum conditions.

C7/Z06 Man

DITTO! Big Time!!!

I am the proof and perfect example; it's been reported on this thread that the "GM" 1/4 mile spec for the Grand Sport is = 12.3 @ 115.6 mph; Well, I hold the Grand Sport "Stock" Record at = 12.31 @ 115.75 mph and the closest to me on this "world wide" forum is over 2 tenths slower. I would say something smells a little fishy that there is only one person just "meeting" the "spec"! And the GS has been on the road since 2010.

PS: I have seen/kicked a$$ on some "modified" ZL1's. However the one or two stockers I have seen and the last one was just a week or so ago in very nice weather with less than 1,000 miles on the clock could only muster 12.7/8's on the passes I witness and he did not spin out of the hole.

Flh Den

When and what did you drive in Karting? I won the Ri state championship and 2nd in the nation at Laconia (Bryar Motorsports park) in 1965 running a Rupp kart with a modified West bend 820 in the B open class before I went in the service. Another forum member and old friend was a multi national champion as well. You might know each other.....
Actually I just checked your profile.... You must be THEE Paul Martin who designed and manufactured Disc Brakes for karts. If so it's a pleasure, great stuff.