Corvette Performance
C5 | Z06 | C6 | ZR1 | C7

Is my trap speed right?

Thread Tools
 
Search this Thread
 
Old Aug 23, 2008 | 01:09 PM
  #1  
Nwmembr19's Avatar
Thread Starter
Launching!
iTrader: (21)
 
Joined: Dec 2004
Posts: 264
Likes: 0
Default Is my trap speed right?

I went to the track last night and ran an 11.7 with a 2.0 60 ft time, launching at 3k slightly slipping the clutch. It just seems like i should be trapping higher. What do you guys think? the only thing i can think of since i left the dyno was i bought some duralast plug wires on.
Reply
Old Aug 23, 2008 | 02:11 PM
  #2  
pittman's Avatar
TECH Addict
iTrader: (1)
 
Joined: Sep 2007
Posts: 2,206
Likes: 0
From: Orange Park Fl
Default

500 rwhp will give you mid tens if things are right...you know, tires, psi, launch method, shifting, clutch, 1.4-1.5 sixty foot. However, 11.7 is nothing to laugh at. That is quick.

Pitt
Reply
Old Aug 23, 2008 | 02:40 PM
  #3  
Red99TA's Avatar
TECH Addict
20 Year Member
iTrader: (11)
 
Joined: Oct 2003
Posts: 2,442
Likes: 6
From: Topeka, KS
Default

Am I missing something b/c I don't see your trap speed anywhere? Considering guys have gone high 11's in a stock C5Z and you're at over 130RWHP more I would say something isn't right. Granted those best stock times are great drivers pulling 1.7 60's but you should be lower than an 11.7.
Reply
Old Aug 23, 2008 | 04:34 PM
  #4  
pittman's Avatar
TECH Addict
iTrader: (1)
 
Joined: Sep 2007
Posts: 2,206
Likes: 0
From: Orange Park Fl
Default

Originally Posted by Red99TA
Am I missing something b/c I don't see your trap speed anywhere? Considering guys have gone high 11's in a stock C5Z and you're at over 130RWHP more I would say something isn't right. Granted those best stock times are great drivers pulling 1.7 60's but you should be lower than an 11.7.
Ha...I wasn't going to dog him over the trap speed missing..lol

Pitt
Reply
Old Aug 23, 2008 | 11:14 PM
  #5  
Nwmembr19's Avatar
Thread Starter
Launching!
iTrader: (21)
 
Joined: Dec 2004
Posts: 264
Likes: 0
Default

my mistake 124mph. Also does et effect mph at all? In example if i cut a 1.7 60 foot time is it going to give me more mph over my 11.7, 2.0 60 foot time at 124mph.
Reply
Old Aug 24, 2008 | 07:04 AM
  #6  
pittman's Avatar
TECH Addict
iTrader: (1)
 
Joined: Sep 2007
Posts: 2,206
Likes: 0
From: Orange Park Fl
Default

Originally Posted by Nwmembr19
my mistake 124mph. Also does et effect mph at all? In example if i cut a 1.7 60 foot time is it going to give me more mph over my 11.7, 2.0 60 foot time at 124mph.
your mph is pretty much what it is. Sometimes a little more spin may raise it 1 or 2 mph. your sixty foot and shifting is what will lower your et. 124 mph is pretty dang good but not high enough to match 500 rwhp. that mph might more closly match 425 rwhp in my opinion. Nothing is exact though. Keep working on it...you will start dropping.

pitt
Reply
Old Aug 24, 2008 | 10:15 AM
  #7  
JayplaySS's Avatar
Moderator
20 Year Member
Liked
Loved
Community Favorite
iTrader: (15)
 
Joined: Dec 2004
Posts: 4,615
Likes: 161
From: Miami, OH
Default

Originally Posted by pittman
your mph is pretty much what it is. Sometimes a little more spin may raise it 1 or 2 mph. your sixty foot and shifting is what will lower your et. 124 mph is pretty dang good but not high enough to match 500 rwhp. that mph might more closly match 425 rwhp in my opinion. Nothing is exact though. Keep working on it...you will start dropping.

pitt

Yep. 425-450rwhp should get you 124-125mph in a C5/C6. You have some more in it. Just work on your 60' and shifting and it should pick up but with 500rwhp it should be running high 10's @128 or so.
Reply
Old Aug 24, 2008 | 10:25 AM
  #8  
pittman's Avatar
TECH Addict
iTrader: (1)
 
Joined: Sep 2007
Posts: 2,206
Likes: 0
From: Orange Park Fl
Default

Originally Posted by JayplaySS2
Yep. 425-450rwhp should get you 124-125mph in a C5/C6. You have some more in it. Just work on your 60' and shifting and it should pick up but with 500rwhp it should be running high 10's @128 or so.
that ex-cobra sounded pretty nasty. Any 1\4 mile times ??
Pitt
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

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

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Aug 24, 2008 | 11:23 AM
  #9  
Larry's Avatar
TECH Addict
20 Year Member
iTrader: (4)
 
Joined: Nov 2001
Posts: 2,485
Likes: 0
From: Sugar Land, TX
Default

Your mph is down probably due to a very warm IAT(Intake air temp). These cars start pulling timing at 86* IAT. If you allowed it to idle for any period of time or did not raise the hood in the staging lanes then expect IATs in the 130*+ range even on an 80* ambient day.

"Slightly slipping the clutch"? Maybe that was all the traction you had. If so that needs to be addressed. Yep, you need those "nawws"! Your car is capable of much better than a 2.0 60'.
Reply
Old Aug 24, 2008 | 03:40 PM
  #10  
Nwmembr19's Avatar
Thread Starter
Launching!
iTrader: (21)
 
Joined: Dec 2004
Posts: 264
Likes: 0
Default

Originally Posted by Larry
Your mph is down probably due to a very warm IAT(Intake air temp). These cars start pulling timing at 86* IAT. If you allowed it to idle for any period of time or did not raise the hood in the staging lanes then expect IATs in the 130*+ range even on an 80* ambient day.

"Slightly slipping the clutch"? Maybe that was all the traction you had. If so that needs to be addressed. Yep, you need those "nawws"! Your car is capable of much better than a 2.0 60'.
That makes sense it has been warm and humid lately, and no i didnt raise the hood or anything. I may try lowering the pressure in the nittos next time, but it didnt help me any last time i went out to the track.
Reply
Old Aug 24, 2008 | 03:49 PM
  #11  
Larry's Avatar
TECH Addict
20 Year Member
iTrader: (4)
 
Joined: Nov 2001
Posts: 2,485
Likes: 0
From: Sugar Land, TX
Default

Originally Posted by Nwmembr19
That makes sense it has been warm and humid lately, and no i didnt raise the hood or anything. I may try lowering the pressure in the nittos next time, but it didnt help me any last time i went out to the track.
I would think you have tuning with your mods. Most tuners reduce the IAT tables somewhat. Even if they have it zeroed out so no timing is pulled you are injesting hot air if allowed to idle very long. When I first posted I thought we were talking about a C6 so I am not sure about the IAT table for your 01.
Reply
Old Aug 24, 2008 | 05:16 PM
  #12  
JayplaySS's Avatar
Moderator
20 Year Member
Liked
Loved
Community Favorite
iTrader: (15)
 
Joined: Dec 2004
Posts: 4,615
Likes: 161
From: Miami, OH
Default

Originally Posted by pittman
that ex-cobra sounded pretty nasty. Any 1\4 mile times ??
Pitt
I sold it to an a-hole in NC and the best he got it down to was a 10.3X @ 133 with the battery in the truck and a Hoosier. I never took it to the track but did plenty of street racing and the last year I had it I was never beaten on any of my weekend encounters. Fun car!

Now I have a slowazz bolt on C6 but Im working on it.
Reply




All times are GMT -5. The time now is 12:06 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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