dissapointing times at the track
Apr 26, 2003 | 01:03 AM
#1
Thread Starter
Staging Lane
Joined: Apr 2002
Posts: 75
Likes: 0
From: Rochester, NY
dissapointing times at the track
Went to the track today for the first time after having my high stall torque convter installed. Best time was 15.41@86. That is horrible compared to my best last year of 15.01@91.5. Any suggestions? I think it might have to do with my transmission shifting into OD before the end of the track... suggestions? comments?
Truck: 2002 GMC Sierra Z71 Regular Cab Stepside
Current Mods:
Yank TT3000
HPP3 (87 tuning)
JBA Shorty Headers
Corsa Catback
Volant Intake
Truck: 2002 GMC Sierra Z71 Regular Cab Stepside
Current Mods:
Yank TT3000
HPP3 (87 tuning)
JBA Shorty Headers
Corsa Catback
Volant Intake
Apr 26, 2003 | 02:18 AM
#2
TECH Enthusiast
Joined: Dec 2001
Posts: 715
Likes: 0
From: CA
Re: dissapointing times at the track
What was your 60' time on the before/after converter runs? Also...your truck should not be shifting into overdrive unless you are trapping 110+...do you mean it is shifting into 3rd gear?
Kent
Kent
Apr 26, 2003 | 10:30 AM
#3
Thread Starter
Staging Lane
Joined: Apr 2002
Posts: 75
Likes: 0
From: Rochester, NY
Re: dissapointing times at the track
What was your 60' time on the before/after converter runs? Also...your truck should not be shifting into overdrive unless you are trapping 110+...do you mean it is shifting into 3rd gear?
Kent
Kent
Now with the converter launching in Auto4x4 I get consistant 2.0 - 2.1
I do mean 3rd gear, not overdrive..that would just be crazy
Apr 26, 2003 | 11:17 AM
#4
Re: dissapointing times at the track
I don't mean to insult you or your truck but, I don't think you have enough power to need to launch in 4x4. My truck was running 15.1's and when I tried launching in 4x4 I actually went .3 slower. Have you tried running in just 2wd?
Apr 26, 2003 | 04:54 PM
#5
Thread Starter
Staging Lane
Joined: Apr 2002
Posts: 75
Likes: 0
From: Rochester, NY
Re: dissapointing times at the track
I don't mean to insult you or your truck but, I don't think you have enough power to need to launch in 4x4. My truck was running 15.1's and when I tried launching in 4x4 I actually went .3 slower. Have you tried running in just 2wd?
Apr 26, 2003 | 09:36 PM
#6
Re: dissapointing times at the track
Dont take this wrong, but I think your 15.01 was a freak. Thats one hell of a time for a mildly modded 5.3L.
I usually run in auto 4wd. Sounds like you need a locker. Can you extend your 2-3 shift out any later? If you are shifting into 3rd before the end, you are giving up some.
I usually run in auto 4wd. Sounds like you need a locker. Can you extend your 2-3 shift out any later? If you are shifting into 3rd before the end, you are giving up some.
Apr 27, 2003 | 01:44 AM
#7
Thread Starter
Staging Lane
Joined: Apr 2002
Posts: 75
Likes: 0
From: Rochester, NY
Re: dissapointing times at the track
Dont take this wrong, but I think your 15.01 was a freak. Thats one hell of a time for a mildly modded 5.3L.
I usually run in auto 4wd. Sounds like you need a locker. Can you extend your 2-3 shift out any later? If you are shifting into 3rd before the end, you are giving up some.
I usually run in auto 4wd. Sounds like you need a locker. Can you extend your 2-3 shift out any later? If you are shifting into 3rd before the end, you are giving up some.
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Apr 28, 2003 | 12:38 PM
#8
Re: dissapointing times at the track
Neat to see a big converter like that in a 53. truck...
Indulge me...
Suggested run #1:
Next time at the track, since you spun in 2wd, try this: At the line, two foot it and foot stall the throttle up to like 1500-1700, and when you launch take your foot off the brake and floor it but floor it 1/2 as quickly as normal.
Suggested run #2:
Do the same as #1 but this time manually shift the shifts.
Indulge me...
Suggested run #1:
Next time at the track, since you spun in 2wd, try this: At the line, two foot it and foot stall the throttle up to like 1500-1700, and when you launch take your foot off the brake and floor it but floor it 1/2 as quickly as normal.
Suggested run #2:
Do the same as #1 but this time manually shift the shifts.
Apr 28, 2003 | 01:36 PM
#9
Thread Starter
Staging Lane
Joined: Apr 2002
Posts: 75
Likes: 0
From: Rochester, NY
Re: dissapointing times at the track
Neat to see a big converter like that in a 53. truck...
Indulge me...
Suggested run #1:
Next time at the track, since you spun in 2wd, try this: At the line, two foot it and foot stall the throttle up to like 1500-1700, and when you launch take your foot off the brake and floor it but floor it 1/2 as quickly as normal.
Suggested run #2:
Do the same as #1 but this time manually shift the shifts.
Indulge me...
Suggested run #1:
Next time at the track, since you spun in 2wd, try this: At the line, two foot it and foot stall the throttle up to like 1500-1700, and when you launch take your foot off the brake and floor it but floor it 1/2 as quickly as normal.
Suggested run #2:
Do the same as #1 but this time manually shift the shifts.
Next trip to the track will be Wednessday
I will let you know how it turns out 
Apr 28, 2003 | 09:35 PM
#10
TECH Addict
Joined: Jan 2003
Posts: 2,002
Likes: 0
From: New York
Re: dissapointing times at the track
hey jim, sorry about the disappointment. my TC still has not arrived yet. i hope my times will improve after the install. i hope to gain .5 , if not .3 would make me happy too