427 Convertible 1/4 mile times?
 

What kind of 1/4 mile times are these stock convertibles putting down? I'm sure someone out there knows. :cool:

There is a reason there are no times posted by any members yet, these cars are heavy weights that are not even in the same league as a Z06 when it comes to performance. :(

How much of a heavy weight is it? Do you know what the 427 vert weighs?

You can look this stuff up yourself! I found the vert weighs 3355 and the ZO6 at 3175. The specs I found in the 1/4 only seem to be a tenth or two different. Not too much of a spread for such a heavyweight!!

http://www.zorly.com/speed-wars/spec...27-convertible

That's a different perspective. Why the hate over <200 lbs weight difference?

Not in the same league is a statement of a pretty narrow focus. By that token the Z06 is not in the same league as a ZR1 I suppose.

Many Corvette drivers make up the weight delta with their own excess baggage.

Pretty impressive performance 11.80 for a stock heavyweight.

Agreed, especially with an extra 180 pounds!

Big Dan, the last time I had an extra 180 pounds in the Corvette was when I had two girls I met at a club need a "ride" home. :D

Is it ZO6 or Z06? ;) Shhhh.....some people dont know.

Oh, and Merry Christmas, Big Dan. :)

Most drivers will be in the 12.0 to 12.5. The ones that can get their 60' down will get into the 11's

I hope you took them out to breakfast first, sounds like they could use some "meat" in them...lol. Merry Christmas to you too Dan...

You guys are going off of GM posted times, let us see some real numbers.
Numbers posted by our members, this car has been out almost 6 months and no numbers??? The Z06 had numbers posted the first week it was out.
Let's see some numbers guys, come on, prove me wrong! :lol:

12.0-12.5 is not great, considering some members are calling this a Z06 convertible. 200lbs is 2 tenths, with this thinking the car should be able to pull an 11.2- 11.4 with the right driver. Don't think so. :crazy:
I think with its extra power, if a driver can't launch it without spinning the tires on the street, it could lose some races against the Grand Sport, which won't spin off the line as bad. :lurk:

Show me members who have done this? :lurk:

If I gave you a members name and the time he turned then you would want me to provide the actual slip from the track. What is your point in all this.
To me it is a drivers race, both great Vettes in the end.

You jerk. lol Spit my coffee on my computer. I see what you did there and yes.......they could use some and they got some. Then they made me breakfast. Roomates you know. :rofl:


I do agree with you, .2 is pretty close for the weight difference. 11.2-11.4 is in best weather and track situations but I am doubting its capability of reaching that figure.

It could lose some races to a GS and without a doubt to a well driven base car. I dont care how fast it is, its a killer car. :)

Of course we would need proof, that is why we have a fast list (eliminates bull *****)
Look 11.8 is quick, but some members here were saying it is basically a Z06 only in a convertible. Then this car should be doing 11.2-11.4 in the 1/4 mile as the Z06 has dipped into the 10's.
11.8 although quick, would be a big disappointment considering the hype.
200lbs is 2 tenths, where did the rest of the quickness get lost? :lurk:
Sorry for my bad typing, I am on the beach in Cabo San Lucas on my ipad. :rock:

Remember, those high 10s and low 11s are in perfect conditions.....not the norm. Good weather, good track prep and a great driver.

Most ofthen you have one or none of those. lol

Okay, understand where you are coming from and I agree. I was just pointing out the 427 Vert is in itself pretty impressive.

Yes, I agree, but we just had a whole fall and early winter of ZR1's posting ridiculous quick times, where were the 427 owners during fast season?
I am thinking that the owners of these cars are not the same type of owner that would own a Z06 or ZR1 as their sole Corvette. I think they are more not into the speed but maybe more show than go, with the ability to press that loud pedal once or twice to scare the crap out of themselves. :lol:

Once again, 11.8 (Have not seen a member do this yet) is quick, but the hype certain members are putting on this car suggests low, low 11's).
We will not even get into it's ability on a road course, compared to a Z06)

:iagree: as long as it doesn't lose to any type of Stang! :lol:

Racer aren't verts banned from tracks w/out a roll bar? Also I agree in that most vert owners want a nice cruiser with a little umph under the hood, even the GS vert is very adequate.

My track they let them go till they break 11.5 (1/4 track). Not sure about road courses.

No....the numbers are not that great, but getting these things off the line is not easy. The 'right driver' is the key. Most do not drive like 'Ranger'. The 60' times make 90% of the difference in the times.
As far as losing to a LS3....the 427 better spin a lot. We have all seen someone light up the tires at the lights, and it will loose a race without a problem, tho.

As TLS has said, different track have different rules. I would think adding a roll bar is going to be safer, but unfortunately, the car will be even slower with more weight being added to it. Wonder if private rentals have different rules.

DITTO.

Speaking of Grand Sports (2010) the coupe weighs more than the GS vert from the info I have seen. It's about the heaviest vette out there with an A6.

Oh, and I have had no problem "Kicking A$$" on even "modified" supercharged Cadillacs & ZL1 Cameros at the track lately and I'm still running on run flats, this stuff makes my day. :D :cool: :thumbs:

PS: The last time I went to the track I still pulled off an 11.57 using new replacement "Bridgestone" runflats that weigh approx. 2 lbs. more per tire than the original OEM Goodyears.

:iagree: I think Racer might be spot on in this observation. It is a stunning car with a proven monster motor and a possible collectable value someday, but I do not think the buyer of these cars are the Z06 or ZR1 crowd. There are hundreds of you tube videos of 1/4 mile runs in late model corvettes, but I haven't been able to find one 427vert run yet.

Maybe another reason we do not see too many of these on the strip.
This is NHRA regs for 2009, not sure of current regs but this has probably not changed.


11.49 1/4-mile (7.35 1/8-mile) or quicker:

-A 5-point minimum roll bar on a fixed roof car (t-tops okay as well if in place while racing) from 11.49 to 11.00 (7.00 1/8-mile). If the hardtop / t-top car has un-altered floors, firewall and frame rails (wheel tubs are okay), then the 5-point roll bar is good til 10.00 1/4 mile (6.40 1/8-mile). Convertibles require the 5-point bar from 13.49 (8.25 1/8-mile to 11.00 (7.00 1/8-mile).
The rollbar must be constructed of a minimum o.d. mild steel or chrome moly tubing (moly can be a smaller o.d and is lighter but more expensive), see diagram below for specs.
The roll bar can be bolted or welded to the floor, see diagram below for specs.
Roll bar must be padded anywhere the driver's helmet may contact it while in the driving position, see diagram below for specs.
The 5-points are:
Main hoop; 2 "down bars" (bars that go from the main hoop rearward to the trunk floor/hatch area. These can be straight or bent like a "package tray" style, search for photos); Welded crossbar for belts (can't be removable), see rulebook for exact location. Driver side door bar (can be a swing-out. Many put a passenger's side bar in as well (6-point) because it strengthens the car on both sides, but if you have subframe connectors the difference may be minimal).

I know that I for one wont be taking mine down the quarter mile. Those days are in the past for me. Our local track requires too much safety gear for me to even attempt it in a vert. Mine is a fun car, and will be driven fairly hard on warm dry ground, right up until I start to exceed posted limits, lol, or otherwsie when no one is looking or around.

I suspect that many of the owners are of the same mindset, whereby its a cruiser, and would likely only see qurter mile tracks from the parking lot. In order to get one of these to run good quarter mile times would require a good driver, nice hot tires, and the whimsy to approach redline to get on down the track in a manner that would make the onlookers proud. I think many of the guys wont be doing that anytime soon, especially those of us that would have ot install rollbars, harnesses, etc to do so.
I would think that the track minded folks would likely have steered away from the 427 vert for those reasons alone.

What is this Camero you speak of?:toetap:

Just bustin' your chops, bud. :)

I have been to a track like that. My friends 98 WS6 A4 vert ran faster than the 13.49 and they told him he was done....and he was stock!

It would be cool to see someone take it down the track.

Though most wont I dont hold anything against them for not taking it down the track. :) Me, I would have to. lol

Yep, they're a whole 160 pounds heavier than a Z06.

If I could get a run down a track without all of the safety requirements, I would give it a go, its just too restrictive these days, but obviously with good reason. For me, its just a fun car, that "may" hit quarter mile speeds every now and again when no eyes are on it, but there wont be a christmas tree or timer....

ZL1 Camaro
 

Thanks for letting me know, I really hate spelling errors. I don't know about you but it makes me feel like an IDIOT, English/spelling was my "worser" subject. :D

Now the story behind "Camero".

I can not tell a lie! :lol: I had it spelled with an "A" but I double checked with my significant other who owned a "Camero" and is usually a much better speller than I am. Well, she was wrong!!! and I told her so? :D

For what it is worth, I found a chart in the back of January 2013 Road and Track magazine that shows the following:

Curb Weight 0-60 1/4 Mi
Corvette Grand Sport 3430 4.0 12.3@115.6
Corvette Z06 3310 3.6 11.7@124.1
Corvette ZR1 3395 3.4 11.4@129.7
Corvette 427 convertible 3475 4.0 11.9@120.9

Real World Times= My 2010 Grand Sport A6 Coupe best "stock" 1/4 mile time is 12.31 @ 115.75 mph and I hold the "Total Stock" GS record for a while now and the next to me is over two tenths slower, and I weigh 260 lbs so my car or me must be an "odd ball" to be that quick. Fat men are not that quick! :lol:

Or GM uses <160 lb. professional test drivers for the 1/4 mile. :D

Just joking with you dude. :)

For her being wrong you should something "special" from her. lol

You are dead on. Same with bikes. They use midgets. 150 hp with a 375 lb bike and 135 lb rider is a LOT different than a 375 lb bike and a 220 lb rider.

I bought my 427 because I had wanted GM to build a convertable Z06 since they came out. I know, I know, it's not a convertable Z06, but let's say it is as close as we are going to get. I would love to be able to take it to a track somewhere just for peace of mind that no speed limits to break and no cars coming the other direction around the next turn. I know that isn't going to happen so I'll press the pedal very carefully in what I consider safe conditions when I get the opportunity. That said, I want the prestige of having a bad iconic motor under the hood and just knowing that baby is in there is enough for me. For those wanting Youtube proof of this car's ability, here is a couple of links to reviews that are not GM connected. I think this shows this car's performance ability quite clearly and I consider it pretty impressive.

Enjoy: and

Stats
 

3404 lbs. curb wt. is what the second video (Ignition) has the 427 vert listed as, not 3475 so it comes down to who you want to believe. If I had one I would use GM specs or weigh it on a good scale myself. :cheers:

Great videos, it's not just a great looker but a great performer as well. Thanks for posting..:cheers:

On GM's website....
427 vert-------3355 lbs
Z06------------3175 lbs
GS coupe------3311 lbs
GS vert--------3289 lbs.

Car and Driver's tests - 3421 for the 427, 3261 for the last Z06 they tested (had the Z07 stuff).

GM's figures probably don't include a tank of gas, and AFAICT they aren't trim-level specific.

Just throwing that in there. :thumbs:

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.

Whoops ZR1 3395lb got it. Big mama.

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).

Article posted in the ZR1 section.
 

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 :thumbs:

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.

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.

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.

My A6 GS Curb & Final "stock"&"bolt-on" record setting weights; if interested.
 

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. :cheers:

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!!!

Pretty good times!! Thanks for posting!!

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.

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.

http://i45.tinypic.com/erd2kl.jpg

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. :thumbs: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! :rofl:

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.

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. :thumbs: 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.:cheers:

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.

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

.


Amen!

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.

:cool: 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.

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.....:cheers:
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.

The 2013 rules are similar, but Corvettes must be welded/bolted to the frame, not the floor or anywhere else. To do that with a vert, means cutting into the trunk area, which no one wants to do.
Also 4130 moly tubing is the same diameter, but can be thinner wall.

So any sub-13.50 times for a vert will be from a track that has looked the other way.

Mine is a fun car too, but in a different way. '08 coupe at 104K miles has been in 47 states, yet has a best of 10.82 with just bolt-ons and yes, I do have a rollbar.
I've had my share of verts, but haven't raced one at the drags since 1964.
I'm glad we don't all like the same thing. It'd be way too boring.

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.[/QUOTE]

Guess I can't hide here anymore. LOL. Yes, that would be me. My first kart was a Rupp H model. First race was in 1964 but really started racing pretty solid from 1967 until 1997. I mostly ran Bug karts for many years and later on mostly Margays. Just play now from time to time. I keep a couple of TAG karts over at New Castle Motorsports Park in Indiana. My son, a few other friends and I will go over once in a while and turn the tires. The TAG's are a good ride at NCMP. At 65 years old, I'm pleased I can still fit in my karts. Karting is still the best racing experience for the money spent and maybe the best period. BTW, thank you for the kind words about my brake systems. Been doing this now for 33 years and still enjoy it.

[QUOTE
Guess I can't hide here anymore. LOL. Yes, that would be me. My first kart was a Rupp H model. First race was in 1964 but really started racing pretty solid from 1967 until 1997. I mostly ran Bug karts for many years and later on mostly Margays. Just play now from time to time. I keep a couple of TAG karts over at New Castle Motorsports Park in Indiana. My son, a few other friends and I will go over once in a while and turn the tires. The TAG's are a good ride at NCMP. At 65 years old, I'm pleased I can still fit in my karts. Karting is still the best racing experience for the money spent and maybe the best period. BTW, thank you for the kind words about my brake systems. Been doing this now for 33 years and still enjoy it.[/QUOTE]

It's a pleasure Paul, I have heard many great things about your braking systems. After returning from Viet nam in 1968 I never returned to karting and bought my first Corvette. Karting is a great racing experience that most people think of as kids toys. Even in 1965 with a 820 West bend, 9 ported by Wiseco, 3 carbs on fuel, that little chainsaw motor averaged 74 mph for the 60 miles at Loudon that I ran for my national championship. I was clocked at nearly 100 mph down the back straight. My brother had twins of the same motor and he ran 138 mph down the straights. Welcome to the C6 forum, you certainly have a beautiful car.....:cheers:
BTW Loudon was a road course back then and it was called Bryar motorsports park.