Trap rpm - LS1TECH

Go Back   LS1TECH > RACING DEPARTMENT > Drag Racing Results
Sign in using an external account
Register Forgot Password?
Search


Drag Racing Results Track Times | Records | Testing Info
Timeslip Database CLICK HERE

Trap rpm

Reply
 
Thread Tools Search this Thread
Old 01-07-2012, 05:30 PM   #1
On The Tree
 
Trader Rating: 8
Join Date: Jan 2007
Location: Chicago
Posts: 107
Default Trap rpm

What RPM should car cross Trap at?

1-2 shift at 6400-6500 2-3 6400-6500 and finishing the 1/4 at around 6000 rpm at 113-115 mph. 1.65-1.7 60',11.7-11.8 times. I think I should be at around 6200-6500 rpm at the end?

Looking for some comparsions or input?

Stock LS1 Engine, LS6 Heads /Cam(224/224 .581 lift), Automatic with 3200 Stall, 3.23 Gears.

Last edited by OLDSCHOOL85; 01-07-2012 at 09:35 PM..
OLDSCHOOL85 is offline   Reply With Quote
Old 01-07-2012, 07:06 PM   #2
11 Second Club
 
Doug G's Avatar
 
Trader Rating: 0
Join Date: Aug 2010
Location: Harford Co. Maryland
Posts: 2,536
Default

Mines about the same.
__________________
68 Camaro LSx
1.546 60'
7.132 @ 94.43
11.327 @ 116.79 .....and tuning.
Doug G is offline   Reply With Quote
Old 01-07-2012, 08:28 PM   #3
TECH Senior Member
 
gator's 99TA's Avatar
 
Trader Rating: 2
Join Date: Nov 2001
Location: Tampa Bay
Posts: 9,971
Send a message via AIM to gator's 99TA
Default

At 6500 rpms I am going through the traps at about 140 mph on a 28 tire and 373 gear.
__________________

- John
1999 Pontiac Trans Am | 404" LQ9 | Nitrous | Drag Radials | 3600 lbs
9.2 @ 144 1.28 60'
gator's 99TA is offline   Reply With Quote
Old 01-07-2012, 08:45 PM   #4
On The Tree
 
ittwgn's Avatar
 
Trader Rating: 0
Join Date: Jan 2012
Location: sydney australia
Posts: 131
Default

i,m doing around 6100 rpm thru the line @142.8mph 27.3 inch tyre 3.45s in the diff!!!doesn,t power versus weight come into this if you had more power or less weight you would effectively reach a higher rpm and more mph if your gearing allows??? say you went up to 3.45s or 3.7s you would in thoery get there quicker and be revving higher thru the finish but only at a similar mph due to gearing change!!!???? cheers
ittwgn is offline   Reply With Quote
Old 01-07-2012, 10:36 PM   #5
TECH Senior Member
 
gator's 99TA's Avatar
 
Trader Rating: 2
Join Date: Nov 2001
Location: Tampa Bay
Posts: 9,971
Send a message via AIM to gator's 99TA
Default

Weight has nothing to do with this. It's all about converter efficiency. The op has an inefficient converter. Lots of slip out the back.
__________________

- John
1999 Pontiac Trans Am | 404" LQ9 | Nitrous | Drag Radials | 3600 lbs
9.2 @ 144 1.28 60'
gator's 99TA is offline   Reply With Quote
Old 01-08-2012, 01:05 AM   #6
On The Tree
 
ittwgn's Avatar
 
Trader Rating: 0
Join Date: Jan 2012
Location: sydney australia
Posts: 131
Default

Quote:
Originally Posted by gator's 99TA View Post
Weight has nothing to do with this. It's all about converter efficiency. The op has an inefficient converter. Lots of slip out the back.
i knew that converter efficency affected your 1/2 track mph to your 1/4 mile mph but thought if you had more power would overcome the lack of rpm thru the line!! anyway here to learn as much as possible and be stand corrected when needed!!! cheers back to the op what is your 1/2 track mph compared to finish???
ittwgn is offline   Reply With Quote
Old 01-08-2012, 04:56 AM   #7
8 Second Club
 
Trader Rating: 0
Join Date: Aug 2007
Location: Statham,Ga
Posts: 148
Default

Quote:
Originally Posted by gator's 99TA View Post
Weight has nothing to do with this. It's all about converter efficiency. The op has an inefficient converter. Lots of slip out the back.
We are a little over 7000 rpm in the traps and thought that our weight of
3700+ was at least partially responsible for our times not being better.

I can stop trying to get our weight down now.

Never realized our converter was so ineffecient!
__________________
8.878sec 155.01 mph @ 3700lb
(1/8th 5.683 sec 123.60 mph)
(1.319 sec 60')
Big thanks to:
Mike,Ron,Jey @Vengeance 678-513-7105
Thomas@Hendrix Engineering 980-521-0722
Greg@FTI 386-736-5816
Frank@The Driveshaft Shop 704-633-2380

Last edited by magnum-gto; 01-09-2012 at 01:49 PM..
magnum-gto is offline   Reply With Quote
Old 01-12-2012, 02:24 PM   #8
TECH Fanatic
 
Trader Rating: 2
Join Date: Aug 2007
Location: Rhode Island
Posts: 1,474
Default

Yeah that converter is pretty inefficient. At 6000 RPM w/ 3.23s im at 130 MPH and my converter is loose as *****.
__________________
2009 G8 GT
CAI, Dyno Tune
stumprrp is offline   Reply With Quote
Old 01-12-2012, 06:38 PM   #9
On The Tree
 
Trader Rating: 8
Join Date: Jan 2007
Location: Chicago
Posts: 107
Default

At what rpm should I be finishing the 1/4 mile at?


My Best times so far are 1.65-1.7 60',11.7-11.8 times at 114-115
Stock Automatic Trans with Viglante 3200 Stall, 3.23 Gears
OLDSCHOOL85 is offline   Reply With Quote
Old 01-12-2012, 06:38 PM
LS1Tech
Pontiac Firebird




Paid Advertisement
Reply


Tags
14, cross, finding, finish, gears, line, ls1, mile, rpm, rpms, shifting, tech, trap, traps, versus, whats


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off



Join Ls1Tech

All times are GMT -5. The time now is 11:28 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Service - Privacy Statement - Terms of Service - JOBS
Emails & Contact Details