What do you think my new time,speed,and 60ft should be? My car ran a best of 12.5@114.5 (2.10 60ft) and power was at that time 372hp and 358tq. Car is a 06 LS2 6 speed auto with z51 and had at the time intake,ported tb,stage 2 ported stock intake,b&b header+exhaust+x pipe,hp tuners tune.

Now i added a full zr1 body kit and added replica z06 rims and new 285x18 and 335x19 nitto NT05 tires for the exterior. Engine mods added were fast 102 ported intake,62lb fast injectors (spraying next year when i do 408 stroker),double roller chain,ported oil pump,trickflow 225cc cnc ported heads (not milled), cometic .40 head gaskets,edelbrock water pump,k tech pulley,comps cam .588/.586,222/224 112 lobe,arp bolts everywhere possible.

So with all the new goodies what should my time,speed, and 60ft should range between? my new dyno numbers are 442hp and 422tq on a dynojet in Tucson Az bad weather

 

My 06 A6 with grandsport body kit 3588lbs with me in it ran 11.0@127 1.54 60ft 420rwhp on Dynojet. You just might get that ten second slip!!!!Good luck bro, getter to the track

 

I really hate to be the buzzkill on this one but I honestly doubt you'll break into the 11's and depending on when you do go, I could see you not even being able to match your previous best.

Although you've gotten a respectable TQ and HP bump, those gains will be partially offset by the added weight of the new rims, tires and body kit. Nitto drag radials typically hook the worst out of all the major brands and if you haven't had your shift points modified to reflect the different tire size and difference in performance numbers you're likely to find yourself shortshifting.

The biggest gotcha however will be the DA. I noticed from an earlier posts that one of your PBs was obtained with a 3000ft DA. Given the DA got up to around 5500ft at SIR last weekend, that right there could slow you down by 4 tenths (or more) as a 12.50 in a 3000ft DA will equate to a 12.936 in a 5500ft DA.

I really didn't mean to burst your bubble with all of this but given the facts you've laid out that's what I see as the most likely outcome.

 

Its impossible for anyone to predict your 60s. That depends on track prep, weather and your launch technique. As far as numbers, if you are in a higher altitude, its hard to determine a 1/4 time. My car is an 06 m6 3lt, non z51 and I ran 12.4 @114, with a 1.9 60 on run flats. I'm sure with your mods, I could run very low 11s with mid 120s. "ITS STOCK", ran 11.2 @125-6 with just cam, headers, and 18 inch mickey Thompson drag radials and he has an 06 m6. The potential is there, just have to perfect your driving. One thing for sure, You never here about slow Vetts, with all your mods, I'm sure your car is a handfull. Good luck and keep us updated.

 

Unfortunately I have to agree with the above.

I do believe that you will see a new best but it might not be entirely representative of all the power mods that have been done to the car.
If your tuning is spot on and the air/DA is similar, perhaps a 1.8/low 1.9 sixty foot on it's way to an 11.6/11.7 at around 120mph maybe?

 

Until I got to the cam part, it appeared to me to be a wash. Lots of stuff to slow you down and other things to overcome the losses. I'd guess about a 12.0 in Tucson and 11.7 in Phoenix.

You'd be .2-.4 quicker with a converter.

 

10.89 @ 129 at atco N.J.

 

FWIW...

He didn't put drag radials on, but even if he did, the NT05R tire is a monster compared to the 555R (which even the 555R has seen plenty of 1.6 60's and better out of cars....it might not hook as much as a MT or Hoosier but more times than not it isn't necessary to hook as well and it will still hook enough for the cars power. Mid 400 horsepower isn't exactly crazy horsepower levels. The 555R is easily good for 10s any day of the week in a mid 400 rwhp car in good air).

I do agree that the DA is a HUGE factor, but I don't think he'll run slower.

I would anticipate high 11s and low 120's mph with the added weight and higher density altitude.

 

Not with a stock torque converter. And I've seen +4000 and higher DA at Atco too ya know.





True. But I think it might depend on the temps (and even the trans, manual or auto), I've found 555Rs virtually useless under 45-50 degrees and that was with only 335rwhp.
I know almost any drag radial will start to go away in freezing temps but the 555Rs seemed to go much sooner. But in warmer weather I agree that they can do very well.

 

I just checked my records. With 450 rwhp, 3200 DA difference was about .3 and 4 mph with the same 60 foot pretty consistently.

This correlates to what Jeremy Preston, a several time NHRA sportsman champ told me that 1000 DA difference is about a tenth in a n/a Vette, mas-o-menos.

 

I didn't know that tires and body kit would hurt it that much. i thought run flats were heavier than these nittos. it felt like the 18x8.5 tires were heavier than the new tires 18x9.5 and same for the back tires also felt that way even though they are bigger.the back rims i could a little difference but not much more than 5-10lbs from the feel of it. also the body kit should of lightened the car i thought? the carbon pieces weigh practically nothing and i could hold all the carbon fiber parts with my pinky from what i remember doing when i got them. I couldn't believe how light they were. the front splitter felt as light as paper! and my zr1 hood is for sure lighter than stock hood with its the big clear window in it has to cut at least 7-10lbs. i thought between all the body parts i was adding maybe 15-20lbs more because only thing heavier than stock fiberglass parts i had should be rear quarters everything else is carbon and should be lighter. and the wheels couldn't been more than 20lbs total extra weight. can 40lbs extra really affect it that much. my car couldn't even come close to hooking in first no matter what speed i was at and second would actually grab at first but then once my car hit around 5k it would spin like crazy again in 2nd. it seemed like that is where my cam and heads made most pull. I thought this new setup would launch just perfect like before no matter how hard i stomp it in first gear when i only had 370hp it would barely even spin if anything at all and i could run mid 12's. I personally feel like the car with just having those wider tires and non runflats on it now should pick me up 2-3 tenths. You really don't think i could brake mid 11's? i am no expert i just feel like car is that much faster now. i could actually hang with the stock z06 before and only loose bye a couple cars at my local track. I feel like i would bet money now even though i am not because it feels that much faster

 

The DA will be the biggest thing working against you. Post the exact date and time of when you ran your prior best time and I can crunch some numbers.

 

I have the time slips put away, i am in process of moving right now but i remember it being a unusually cold night and it was like 48 degrees, the d.a when i came home to check that night was was a record low 1800ft d.a when i did that quarter mile corrector it said like a 12.3-12.2 if i remember right but that was of course before the mods

 

And a set of drag radials will make your track life much more fun. My super big 345 Invos are terrible on the drag strip, not much better than runflats, and my 555RII's were likewise terrible. I believe the NT05 is also a road course tire, so I'd expect it to be similarly less than optimal for the drag strip.

After drag radials, a stall converter will be be the best mod you can put on for track use.

BTW I bet the car looks great with the ZR1 kit...I just did the Grand Sport kit myself and absolutely love the new look. It's like a new car!

 

Ouch! You may be in for an even bigger letdown than what I originally thought and the longer you wait the worse it's gonna get because the cooler season is pretty much already behind us.

To give you an idea of just how much your car may actually slow down, a 12.5@115MPH run made in an 1800ft DA would equate to 13.145@109MPH in a 5500ft DA or a 13.201 if it hits 5800ft (both of which occur pretty easily at SIR).

As such, not only may you end up running slower than before but you might even have trouble even into the 12's depending on bad the DA ends up being when you finally do make it back.

 

I assume that you didn't add Z06/Grand Sport brakes to the car as well?
If not, then you might not have added as much weight as was originally thought...though even just 20 pounds more on wheels and tires (I still think you might've added on a little more than that) can effect performance.

 

Here's what I think...
Your best times will only be achieved with a better tire and even better with a stall conv. I prefer using M/T ET Streets bias ply. (The drag radial version are good to) You need to lower that 60ft times. If you would've pulled a 1.7 60ft time when you were "bolt-ons only" then your 12.5 would've been closer to a 12.0-12.1. When I was "bolt-ons only" I ran a best of 7.2 @ 92MPH 1.59 60ft with my factory repos/295 tire combo up front and M/T ET Streets in the rear.

Your DA is going to play a big part in your overall performance. With good DA (800ft), the right tune and a 1.6 60ft time I say you'll run a 11.5 with no problem.

 

442 corrected or uncorrected HP? My car made ~440 actual up here and ran 11.7@122mph. Then again mine is a z06 so it will be lighter. That was 490RWHP SAE. If you actually made 442rwhp then bottom 12/high 11s maybe doable. If that is 442 corrected then good luck.

 

Allow me to present a glimmer of light for the OP amongst all the doom and gloom...

442/421 is very good power through an automatic. Let's assume its SAE, with his mods, a very small cam and great heads with compression bumped, it likely is.

With 442/421 through an automatic, there is no doubt he could be turning high 10's - A6 guys do it with bolt ons, remember.

All he needs are:

1. Drag radials;
2. Skinnies;
3. 3600 Converter, and
4. Roadtrip with Hoxxoh from AZ to CA to visit TheSubfloor in Sacramento next fall.

By then Hoxxoh will have his cam in and will be itching to beat Theofel's new mid 10 second times he'll be turning, so the trip will have dual purposes.

 

I could easily get his car into the 10's (even at Speedworld if it's reasonably cool as Mike ran a 10.863 there recently while making around the same HP) but in a 5500ft DA (or even higher) his numbers will end up being just awful.