On a recent 0-60 run, the dashboard timer clocked me at 3.3 seconds. When I checked the same PDR recording, it showed me at 3.45 seconds. Has anyone else noticed timing differences between the dashboard and PDR recordings via Cosworth? Yes, I'm new and still practicing my launches, plus this was with a full tank of gas, 100+ temps here in AZ, and we're at 1500 elevation. Of course my baby-fat doesn't help either!! Track mode/Sport2 settings were dialed-in.

 

C7s were and are no different. The only true measurement is a dragy. The pdr is not off in a consistent manner nor is the dash timer. One C8 owner already made a thread about it vs the dragy. The pdr for 0 to 60 was off something like .2 .4 and even a .7. The inconsistencies are the issue with it. Can't just add or subtract and come to a near number. It's a fun tool or gimmick. But for 150 bucks the dragy will tell all.

 

I wonder if the professionals who do these acceleration evaluations and report C8 0-60 times of 2.8 seconds use this infallible "Dragy"?

 

punky. If you only knew the games the car mags play with numbers. Weather correction with an algorithm they manipulate to their liking for good or bad depending on how important one particular brand is and their level of contribution or making certain things availability... not to mention the "quickest 1x". So if you ran the car 20 times and only hit "X" once and all others were .2 .3 or whatever slower - they post the 1x anomaly or unrepeatble time. How do I know this? I've experienced it first hand. When I spoke to the journalist that wrote the article in question re my car with me driving? I was told that several factors were considered and adjusted to better reflect the "true" outcome... yeah ok. How about them adding 2mph and deducting 2 off the quarter mile runs with the product they promoted but leaving the car when not equipped with that item exactly what I ran. It was then and there that I never approached a single thing any if these rags did without a bit if skepticism.

My question to you pal is this....

WITH ALL THE ATTENTION IT WOULD BRING WHY WOULDN'T THEY FILM THE CAR DOING IT WITH A VBOX OR DRAGY OR BOTH AND PUT IT UP ON YOUTUBE?

Because it probably never happened. And the real time on their equipment reflected a slower time but that didn't "jive" with the gracious GM ads. So they "adjusted it" my bet? They said well the dash timer shows x.x.. so the rag said sure. Just use that...NOT EVEN the pdr because again, it would be posted up. Argue that point friend.

 

^^^^^"Never happened", OK, according to you. 2.8 0-60 that the professional testers report, "never happened". MT, C&D, etc. are all liars in your book.
Is GM's 2.9 second figure also in your "never happened" category? Is GM a bunch of liars too?

 

The day any of them post a dragy video or video with a vbox of it?? I will be the first to post the link. Believe me. It's fascinating to me in today's day and age nobody has been able to put it up. Yet go to dragtime's youtube channel and he has both vbox and dragy and runs every one of his cars and so many others. That's called proof. 1 guy. Vs huge conglomerates that don't. You don't see that as strange?

 

Get over it and yourself. Nobody is under any obligation to prove anything to you or any other C7 Z06 owner in obvious denial. You seem to really have your ***** twisted up and busted over the C8s performance metrics and don't believe reputable professional testers which is clearly your problem not theirs.

 

Saw one also posted at 2.6 at 60 mph.

 

 

If anyone thinks magazine tests are a true reflection of accuracy I would like to sell you some Pacific Beach coast property in Orlando. And I'm not leg humper of any Generation if the Corvette.

 

I don’t have any faith in Motortrend as these same “professionals” were the ones that posted the erroneous C8 dyno numbers that knowingly had to be wrong because they were so far off, you didn’t believe it actually made 558rwhp then did you as some gullible people did? I’m not saying it didn’t do what GM posted in optimal conditions, but just wonder if Motortrend actually used their equipment or went by what the timer on the car said? Serious question for those that aren’t afraid to drive their C8 in the rain, how do the numbers compare when using launch control in the wet with tire spin?

 

Remember the tests of the LT1 Camaro Z28 vs the SS and then the LS1 Z28 vs the SS? "The SS adds extra power and blah blah blah runs .3 faster and 4 mph more." Bullshit. I've had both versions, have been around LS and F-Body cars for decades. They ran identical to one another but you can't put that in a magazine. lol

 

lol.. this will never end.

 

Wasn’t it PT Barnum who said “there’s a sucker born every minute”? I personally don’t like deception even if unintentional, but especially if intentional. Some people may not be able to handle the truth, I want nothing more or less.

 

Agreed.

Tires is what gets confusing with things as since cars are equipped with better tires. If they are faster because of those that's fine. So say you have tow cars. One car wins because it has better tires. It's the faster car from the factory. Then I would like them to be fitted with the same tires, the most sticky, that can fit both cars and then let them battle it out much like motorcycles.