LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

Should I be disappointed? Track time after mods-->

Thread Tools
 
Search this Thread
 
Old Sep 25, 2010 | 10:14 AM
  #1  
crazyjoe's Avatar
Thread Starter
TECH Regular
 
Joined: Dec 2005
Posts: 432
Likes: 0
From: Huntington WV
Default Should I be disappointed? Track time after mods-->

So I finally made it out to the track (1/8 mile) after throwing some mods at the GXP; FWI, DT headers w/no cat, and tune (still running stock cat-back). I managed a best of 9.07 @ 76.84mph on a 2.09 60' when the car was bone stock, but the weather was awesome that day as well as the track prep. Last night was a different story, humid and track prep was horrid. I couldnt do any better than a 2.3x 60ft all day, until the very last run of the night. Last and best run went as follows:

2.128 60', 9.025 @ 78.98 mph

I went back and got the DA info for date I ran the car stock and it was 1400' vs. last night's run where the DA was 2377'. Would the difference in DA play that big of a role in the times? Just trying to justify why the car didnt dip into the 8.9's like I wanted, although it did pick up a couple mph from the last time out. Thoughts??

Joe.
Reply
Old Sep 25, 2010 | 10:21 AM
  #2  
AlabamaGuy's Avatar
TECH Addict
iTrader: (5)
 
Joined: Jun 2009
Posts: 2,802
Likes: 0
Default

Try a calculator to see what you would have ran under perfect conditions both times.
Reply
Old Sep 25, 2010 | 10:32 AM
  #3  
JP_GXP's Avatar
Banned
 
Joined: Dec 2008
Posts: 1,737
Likes: 0
From: Almost Arkansas, LA
Default

That DA is VERY high, and plays a large role.
Reply
Old Sep 25, 2010 | 11:54 AM
  #4  
CenTexSS's Avatar
TECH Fanatic
iTrader: (2)
 
Joined: Feb 2009
Posts: 1,398
Likes: 0
From: Killeen, Texas.
Default

I think the DA was definitely a factor. But it's hard to compare different days/track Back when I had my 04 Sentra. Before any major mods, I went on a Friday night, ran 14.7 @ 93 with a 2.1 60 foot, with mediocre track prep.

Went back the next day when the track was having an event. In the test and tune I ran 14.5 @ 94, with a 2.0 60 foot. The DA was worse the Saturday, but the track prep was so much better my time were a lot better.
Reply
Old Sep 25, 2010 | 11:57 AM
  #5  
AlabamaGuy's Avatar
TECH Addict
iTrader: (5)
 
Joined: Jun 2009
Posts: 2,802
Likes: 0
Default

Originally Posted by CenTexSS
I think the DA was definitely a factor. But it's hard to compare different days/track Back when I had my 04 Sentra. Before any major mods, I went on a Friday night, ran 14.7 @ 93 with a 2.1 60 foot, with mediocre track prep.

Went back the next day when the track was having an event. In the test and tune I ran 14.5 @ 94, with a 2.0 60 foot. The DA was worse the Saturday, but the track prep was so much better my time were a lot better.
They say ever tenth in the 60' is worth 2 tenths in the 1/4. That's dead on for your experience. Just goes to show, like you said, how much track prep plays into the equation.
Reply
Old Sep 25, 2010 | 01:12 PM
  #6  
crazyjoe's Avatar
Thread Starter
TECH Regular
 
Joined: Dec 2005
Posts: 432
Likes: 0
From: Huntington WV
Default

Well, the track prep definitely wasnt as good as it needed to be. I'm going back to the 1/4 mile track in Nov to hopefully click off a few 13 sec passes, I need some tires before then though. Anyone have a lead on some 17" drag radials?

Joe.
Reply




All times are GMT -5. The time now is 08:44 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE