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Discussion Starter #1
First off let me disclaim and say it is not the driver. I have bracket raced for several years and was actually track champion 2 of those.
With that being said only did 2 runs and left because so disgusted.
2.25
8.61 at 88mph
13.02 at 110.97

and then
2.31
8.63 at 88mph
13.01 at 111.99

Car had such bad wheel hop I couldn't get on gas until after 1/8 mile and any powershift was met with violent car breaking in half feeling of wheel hop which made me lift throttle.

Car feels well capable of mid to low 12's with no wheel hop. How do you all do it??
First launch was 2,500rpm partial clutch.
Second was with TC on and off idle launch.
6,500 rpm shifts (which I think is to high).
Going back on friday.
It simply is a matter of principal and pride now.
What launches and shift points work??
 

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I got in 9 runs the other night and generally just dumped the clutch at 2.5-3k rpm and feathered the gas a bit to get out of wheelspin.

With stock tires I just rev'd to about 5k rpm, dumped the clutch, and did a small burnout. Staged.. and repeated the above. The first run I managed a 2.12x 60' with full throttle wheelspin through first and most of 2nd and still manage dan [email protected] 8th. (no 1/4 mile times thus far).

As far as the wheel hop goes.. i've not seen this anywhere but on the street yet.. hope this helps some...

-jbl
 

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Oh yes... almost forgot.. I did speedshift. My biggest thing thus far is that I need more traction to get dip into the low 12s. There were some cars there running 7.9's and quicker with only 85mph or so on them cutting 1.7 shorts.. i dunno if the z06 is capable of 1.7's however... my shiftpoints were around 6200-6500rpm depending on how the run felt.
 

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You are not the only one with the wheel hop problem. I had the same experience when I went to the track. The best explanation that I have been told is that the problem is in the A-Arm bushings. They get compressed and at one point they bounce back causing the wheel hop. Unlike the C4, the Z06 does not have a trailing arm which would eliminate the hop. The hop problem seems to be worse on my car at an intermediat level of grip, resulting in a certain compression of the bushings. I feel that the bottom line is that the suspension was not designed for drag racing. It was designed to Auto X and Road Racing. As an example, I see other sophisticated cars like BMW M3 with the same problem.

There is more info. under the wheel hop subject.

JOSE
 

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Jose is correct....the Z06 is set up for road racing /phpBB/images/smiles/icon_wink.gif

Feathering the gas will allow smooth roll out but may cause a few tenths at the drag strip /phpBB/images/smiles/icon_frown.gif

This is not a problem on a road course /phpBB/images/smiles/icon_biggrin.gif /phpBB/images/smiles/icon_biggrin.gif
 

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Discussion Starter #6
I dyno'd it and seem to be on base with rwhp so I know it's there if I just get some traction.
 

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The technique that works best for me, is to dump the clutch at 1800 and powershift (don't lift the gas pedal) at 6300. You should be able to get in the mid 12's.

Good luck!
 
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