DerStig

So you guys with the cars with PDRs, why not try to post some videos with 1/4 mile times and speed?

hardhattg

I did !

but it s not that easy to find a safe road where you can get up to 130 mph or so

Bluedevil15

It's winter

NineBall

I wouldn't call the PDR "real" times, until someone verifies their accuracy vs actual timeslips. It would be fun, however, to start a PDR results thread for people to share their data. Maybe have a simple "fast list" for PDR stuff, sort of like a fun toy to play with.

camirocz

pdr means nothing .Go to a real track run a quarter mile .People and their pdr s make me laugh they re just trying to convince themselves.I base myself on the only true measure of the car s dissapointing acceleration the runs vs the white Viper.No one should accept delivery of their new Z06 until G.M makes it move the way it is suppose to.Not being able to beat a c6 z06 with 505 h.p is pretty sad for a car with 650 h.p.And for the ones who think i m bashing i m not. Just saying what is right.Unacceptable!

L Duncan

Lol, we have Scrouge here...lighten up man...MERRY CHRISTMAS!

heavychevy

Yeah, I thought that tail of the dragon run pegged 1.25 G way too easily for the effort involved considering that's the max it's gotten in skid pad tests. I think some verification is needed.

That being said, DerStig is annoying. He does not think for a second before he posts. essence of a troll.

Steve Snake Driver

The smell of troll despair is strong with this one.

ALLANB

Be interesting to compare PDR to actual track times. No reason to expect the z06 to beat a Viper by much if anything. Viper rated at 640 now 645 in newest models. Z06 rated at 650 hp . Viper lighter by several hundred pounds. The aero /downforce thing could also make pretty big difference and other possible variables They have different final drive ratios as well . 3.42 for z06 and 3.55 for Viper. As for not being faster than 505 hp z06 think we will see its quite a bit faster as more data and times come. And faster car is not always faster a lot of time do to something called "traction".

My 480 stock hp 911 turbo can beat my 99 trans am 800 plus hp twin if the 99 Trans am is on street tires. Put some et drag radials on the 99 Trans am and well its not going to be too close. LOL

Bluedevil15

Go see your family it's xmas! Ohh wait, they probably dislike you like the forum does....

LFZ

Dragon curves are tight and banked....so it doesn't compare to a true skid pad. Try holding 1.2 on a long flat sweeper at a track....not quite as easy.

ck9887

FWIW, I used to have a Beltronics Performance G Meter, I'm assuming it works the same way as the PDR. I used it several times while at the drag strip. The performance meter was within a couple hundreths of a second of my actual time slips.

So i'm guessing the PDR is probably pretty damn accurate. However, track conditions and street conditions are two different things.

DerStig

I thought PDR used GPS, isn't that very accurate? Or accurate enough? If it's just for show, why pay 2k for it? How does it compare to sports chrono?

JoesC5

Yes, the Viper has a 3.55 vs the Z06's 3.42, but you failed to mention that the Viper has larger diameter rear tires, and if you had of, you would have posted that the Vipers rear axle ratio is close to 3.44 when the difference in tire diameter is factored in.

Blvdbrawler

I hear you where are you getting that the C6Z is beating the C7Z? It was one post...My buddies C7Z has killed everything that has come his way (including the old C6Z). Who knows, perhaps its the driver but I haven't seen anything that's disappointing about this car at all. (But I know people like you will)

ALLANB

Ok that could even out the final drive ratios more . But still lots of other variables between the two cars. Like to see overlay of both cars dyno curves to compare them. Two cars can have 650 hp and still very different power bands and areas under the curve.

The main thing here is the Viper was rated at 640 to 645 in 2015 and the z06 was rated at 650. And the viper is couple hundred lighter so right there we have few tenths and few mph possible difference.
The current dynos on the z06 don't show any big power shortage over the rated numbers.

So again will wait and see a lot more race results to really be able to compare the z06 to the Viper. And they are still close enough that some minor mods on the Vette like a cold air induction might even things out more or have the z06 winning. Course you can also mod the Viper. But FI cars generally benefit more from modding than NA cars. And its still up for bit of debate if the z06 will do bit better at altitude than the NA viper would. Turbo car for sure will do better than NA car. A reason why maybe cars like my Porsche 911 turbo can beat higher hp cars at higher altitudes.

Racingswh

I almost spit out my coffee. Thanks for the laugh!

These C7Z threads are so brutal yet very entertaining.

RandomTask

sam90lx

Any videos?

heavychevy

I know, but it was still pegging the meter on some flat turns too. Places you known the driver wouldnt be pushing the limit of adhesion because cliff... Seemed way too easy. The Tail is grippy, but not that grippy.