C8 Tech/Performance Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by: CARiD

First Time Out

Thread Tools
 
Search this Thread
 
Old Nov 1, 2020 | 03:20 PM
  #1  
C8TOY's Avatar
C8TOY
Thread Starter
Instructor
Liked
Loved
Top Answer: 1
Top Answer: 3
 
Joined: Sep 2020
Posts: 109
Likes: 113
Default First Time Out


Reply
Old Nov 1, 2020 | 05:12 PM
  #2  
wallyj's Avatar
wallyj
Burning Brakes
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2006
Posts: 790
Likes: 63
From: Ft Worth TX
Default

Looks like fun!
How does the PDR compare to the timeslip?
Reply
Old Nov 1, 2020 | 05:20 PM
  #3  
C8TOY's Avatar
C8TOY
Thread Starter
Instructor
Liked
Loved
Top Answer: 1
Top Answer: 3
 
Joined: Sep 2020
Posts: 109
Likes: 113
Default

Originally Posted by wallyj
Looks like fun!
How does the PDR compare to the timeslip?
The PDR was pretty optimistic. The timing slip and my Dragy both had the 1/4 mile time at 11.43 and 118mph. The Dragy 0-60 was 3.05 with a 1ft rollout. Overall I was happy with the results. I had two good runs that were within 0.005 seconds of each other.




Last edited by C8TOY; Nov 1, 2020 at 05:35 PM.
Reply
Old Nov 1, 2020 | 05:55 PM
  #4  
wallyj's Avatar
wallyj
Burning Brakes
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Mar 2006
Posts: 790
Likes: 63
From: Ft Worth TX
Default

Originally Posted by C8TOY
The PDR was pretty optimistic. The timing slip and my Dragy both had the 1/4 mile time at 11.43 and 118mph. The Dragy 0-60 was 3.05 with a 1ft rollout. Overall I was happy with the results. I had two good runs that were within 0.005 seconds of each other.

Nice run. Thanks for posting the data. With work as busy as it is it will probably be spring before I get to he track.
Reply
Old Nov 1, 2020 | 09:20 PM
  #5  
Fore58's Avatar
Fore58
Le Mans Master
20 Year Member
Veteran: Army
Liked
Loved
 
Joined: Oct 2005
Posts: 5,040
Likes: 879
From: Tampa Florida
Default

Nice run and good information. Was this a Z51? Several of the guys at Bradenton are running 11.2s at 118/119 trap speed. You are right there or better with cooler weather. Awesome 60ft👍🏼

Last edited by Fore58; Nov 2, 2020 at 09:11 AM.
Reply
Old Nov 2, 2020 | 06:06 PM
  #6  
PRE-Z06's Avatar
PRE-Z06
Race Director
15 Year Member
Veteran: Navy
Liked
Community Favorite
 
Joined: Dec 2006
Posts: 12,323
Likes: 2,873
From: Fort Worth, Texas
Default

Originally Posted by C8TOY
The PDR was pretty optimistic. The timing slip and my Dragy both had the 1/4 mile time at 11.43 and 118mph. The Dragy 0-60 was 3.05 with a 1ft rollout. Overall I was happy with the results. I had two good runs that were within 0.005 seconds of each other.

Thanks for posting, 60’ is up there with the best posted for stock C8s and PDR showed a 2.9 and dragy showed a 3.0 with rollout which makes me believe even more that the 2.6-2.8 0-60s that have been reported from PDR aren’t actually correct.

Last edited by PRE-Z06; Nov 2, 2020 at 06:08 PM.
Reply
Old Nov 3, 2020 | 06:08 AM
  #7  
C8TOY's Avatar
C8TOY
Thread Starter
Instructor
Liked
Loved
Top Answer: 1
Top Answer: 3
 
Joined: Sep 2020
Posts: 109
Likes: 113
Default

As I continue to consider the 0-60 time 0f 2.95 secs recorded by the PDR, I thought I would load the file into the Cosworth Toolbox.


Dragy 0 to 60



Maybe someone out there has a better insight on how the PDR presents the 0 to 60 time. The Dragy is much more in line with both the Time Slip and Cosworth.

As a follow up, I should have searched this issue before posting. Forum member bhvrdr posted a thorough writeup and video on PDR accuracy in July. It is interesting to note that the Cosworth Toolbox gets its performance data from the PDR recording but differs from the PDR presents on the screen.

Last edited by C8TOY; Nov 3, 2020 at 07:10 AM. Reason: Additional
Reply
Old Nov 3, 2020 | 08:05 AM
  #8  
PRE-Z06's Avatar
PRE-Z06
Race Director
15 Year Member
Veteran: Navy
Liked
Community Favorite
 
Joined: Dec 2006
Posts: 12,323
Likes: 2,873
From: Fort Worth, Texas
Default

Originally Posted by C8TOY
As I continue to consider the 0-60 time 0f 2.95 secs recorded by the PDR, I thought I would load the file into the Cosworth Toolbox.


Dragy 0 to 60



Maybe someone out there has a better insight on how the PDR presents the 0 to 60 time. The Dragy is much more in line with both the Time Slip and Cosworth.

As a follow up, I should have searched this issue before posting. Forum member bhvrdr posted a thorough writeup and video on PDR accuracy in July. It is interesting to note that the Cosworth Toolbox gets its performance data from the PDR recording but differs from the PDR presents on the screen.
Thanks again for sharing, so the rollout deduction that’s factored into the 0-60 time displayed on the screen seems to carry over to the 0-100 and 1/4 times displayed unlike with the Cosworth data which appears to be more accurate.

Last edited by PRE-Z06; Nov 3, 2020 at 08:06 AM.
Reply

Get notified of new replies

To First Time Out

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-1

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
story-2

Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

 Joe Kucinski
story-3

Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

 Verdad Gallardo
story-4

Top 10 Corvettes Coming to Mecum Indy 2026!

 Brett Foote
story-5

Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

 Michael S. Palmer
story-6

10 Revolutionary 'Corvette Firsts' Most People Don't Know

 Joe Kucinski
story-7

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-8

2027 Corvette vs The World: Every C8 vs Its Closest Competitor

 Joe Kucinski
story-9

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski




All times are GMT -4. The time now is 03:00 PM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE