+1 on Alberto's post.
If you've ever personally driven a car with that much torque... it tends to create wheelspin (often excessive) between shifts if you shift super hard.
You only wanna shoft as hard as possible when you know it'll only chirp a gear... any more and youre leaving power into burnt rubber, not forward motion.

 

That Z06 would easily be running 10.5s with the 6 speed auto and a 2800rpm stall converter.

 

2800 smaaaall and what 6 speed auto

 

With 7 liters, over 450wtq available at a mere 2000rpms, and a deeply geared 6 speed auto, the additional torque multiplication from a higher stall isn't really needed and a 2800rpm stall would keep around town driveability sane. The LS1 crew has had great results with 2,600-2,800rpm stalls. This auto setup should be good for lower 1.5 60 foots on 26" slicks.

 

WOW
That is an amazing number....
Also I looked at the list of numbers he has run
He has 53 passes in that car already...
I would think with 53 under his belt he can make it run faster then most/anyone.

 

Its amazing a stock corvette with just rubber can ran so fast. Do I believe his times? Absolutely! The car makes enough power to hit that number. Combined with lightweight, good driver and ideal weather why not.

2003 G35 Sedan 6MT
13.84 @ 101 (stock)

 

I disagree. My car has just as much torque as a C6 z06 and on a SMALLER 18in DR I can pretty much powershift the car without inducing ANY wheelspin. You're not going to spin a warmed up 315 BFG DR on shifts with well under 500wtq.

 

Bri-Your car is also 200lbs heavier, which as to help you stay "planted". As far as the DR comment I dunno, but I do know with 500ft/lbs on low boost a powershift 1-2 and 2-3 on slicks got me no wheelspin, Id be surprised if a Z with power like yours didnt spin on a good 1-2 powershift. I thought I had read in one of his posts he said he sometimes spun on those 2 shifts if he was to agressive, every car is different, kinda dumb to argue if you havent driven that car with those particular tires (which he also mentioned were like 3 years old sitting in a friends basement/garage/some$hit). As time passes and more drivers get track time this will happen again.

 

But remember as Sentry65 always says the Z06 is "designed" to handle the power, a 350Z isn't

 

I think many of the FI guys with similar power figures are forgetting NA cars ramp through their powerbands quicker

Youll see a huge difference in a car that makes its power NA vs FI ---- I see it all the time in the Honda camp with 280-330whp cars running 10's NA but it taking 400+whp FI

Plus as others have pointed out NA is effected by DA dramatically --- I ran at at 3000ft elevation track with high temps and youd could bet that sea level times were at least 5 tenths better --- sometimes 8 tenths depending on heat/humidity

Still I see alot of dealers charging big markups on Vettes 15-20K over sticker so buying a Z06 vs building a Z.....I think its cheaper the Z route especially if start with a used example

Impressive numbers though ---- 7 Liters

 

What are you talking about??? Maybe if you're talking about a really linear, high average torque N/A car vs. a big turbo, small displacement turbo car. Then yes...although the turbo maybe have the same peak power, it's average power will be lower. Although this is NOT true with the 350Z FI powerband. The powerband of my car (and other TT setups) puts a head/cam LS1 powerband (which is pretty linear) to shame. My torque curve is as flat as kansas and the power is VERY linear. Very similiar to the LS7 powerband. The only difference between a healthy ~10psi TT 350Z and a C6 Z06 in a straight line is weight and gearing. The Z's powerband is just as stout as the Z06 in that regard.

Exactly...small displacement motors with larger turbines...this is NOT true for all FI cars. Especially bigger displacement motors with smaller turbines.

 

no, what 6 speed auto?

the vette is designed around a transaxle. so 4 speed with bigger stall

2800 lmao, the ls1 crew? ha you would get laughed at for wanting to go that low. My roomate runs a a 4400 on his ls6 college daily driver

the stall alone took it from 11.9 to 11.6 going from a 3400 to a 4400

2600 is barely bigger than stock on a 4l60e. stalled a4 vettes rip extremely hard. My frineds HC c5 would cut 1.5s on BFGs. it would run 11.2s

 

I'm pretty sure the 07 C6 auto is a 6-speed, obvisouly not in the Z06...but I bet it fits in the Z06...

 

One other thing that a friend just made me aware of.
The "Active Torque Management" system on the Z06 will cut power not only off the launch, but between shifts if it detects wheels spin (think VDC for our cars that you CANNOT deactivate). So he was probably shifting at the threshold of where the Active Torque Management would kick in. Hence why it didn't sound like he was shifting hard... because he wasn't

 

finally someone answers my question, thanks

Also, a 3500 stall is very "sane". you cant knock anything on paper until you try it.

and who even knows if the 6at would like stock ls7 power let alone ls7 with long tubes or god forbid a cam. It be awesome if it does handle such power after a rebuild and manual VB.

 

The bugatti runs 10.8, or atleast that's what i've read. So a z06 with DRs and a good driver runs similar times?

-Frank

 

What 6AT? Ummm the 6AT available in the C6 called the 6L60E. As for the stock stalls of 4L60E, try about 1800rpms. I know this, I had an F-body with the 4L60E. Yes, the 2800rpm stall converters are quite common among the LS1 crew. Now if you're talking about LT1s then you'd want to go a little higher (low 3000s). If you're building a more drag focused, non-daily driver LS car, then you can take advantage of a little more stall and squeeze some low to mid 3000s.

As for your buddy's "4400rpm" stalled LS6, BS. Why in the living hell would you go with a stall like that in LS1-LS6 car? Is your friend an idiot? Does he not know a thing about matching the right stall speed to the power delivery of the motor? A 4400rpm stall would put the car way too deep into the powerband therefore hurting performance.

 

no it doesnt, its a great match. I have several friends who have used similar with success on HC cars to have them run bottom elevens

How in the hell could you say its a mismatched stall? It's a great all motor stall, a little loose for the juice though

2800 is a pusy stall

and I asked which 6at because i wanted to know which 6at, i pay no attention to what base c6s come with drivetrain wise. Sorry i am not interested in the car.

 

I still call BS. The F-Body/Vette crew swears by Yank TCs and even according to Yank a 4,000rpm stall is considered a VERY high stall TC. They don't even offer 4000rpm+ stalls for these cars. The majority of the TCs they sell are 2,600-3,200rpms. Anything more is a waste and deterimental to performance unless the LS motor has been built to rev to 7500rpms and the power band is shifted from 4000-6300rpms to 5200-7500rpms.

See for yourself:
http://www.converter.cc/converter_se...ector_main.htm

 

In my opinion.... DR's are one of the most influential MODS that you can make on a car.... car like that hes chipping at least a second off his times... i dont think he should consider it un modded....

f