Can you shift too soon??

jddani · 07-27-2011, 01:20 PM

I know everybody uses different numbers going on and off the stop as well as when to shift. What are some of the lowest numbers people have had success with. I have brought the stop on from .025 all the way down to .001. I've shifted from .091 all the way down to .021. I've even experimented with .001 in the timer and shifting at .021 with 4500 RPM. What kind of experiance have some of you had when trying low?

63corvette · 07-27-2011, 05:20 PM

The shift should come after the car settles down after the launch and varies by the car and track situation.
Some people use a high gear only launch and let the torque converter do all the work.
Stop should come on depending on how you want the car to launch.
To me it varies by car and track situation and how you want it to launch.
Just My 2 Cents
Rick Cates

Mickey Whaley · 07-27-2011, 05:52 PM

You can do alot of things to early hopefully not when the light in the bedroom goes off, ive never seen seen many cars that are alike you are doing the right thing with testing when it gets consistent leave it alone!

Bill Baer · 07-28-2011, 08:17 AM

I agree with Mickey " ive never seen seen many cars that are alike you are doing the right thing with testing when it gets consistent leave it alone"
We shift on the stop @ 1.0 sec out which seems to be more consistent than shifting by RPM.

S/C 302A · 08-02-2011, 07:23 PM

I just switched from shifting @ .4 out to .6 and believe it or not, that little bit seemed to help out my set-up. I did also raise my low side rpm (cruise rpm) 200. Both of those changes really worked for me. I totally agree with the testing and leave it alone when you find a good & consistant set-up that works for your combination. Now my 330' is the most consistant i've ever seen it. Hopefully it stays that way as we maybe start getting into some cooler weather!

07-27-2011, 01:20 PM	#1
jddani Junior Member Join Date: Feb 2003 Location: alabama Posts: 13 Likes: 0 Liked 0 Times in 0 Posts	Can you shift too soon?? I know everybody uses different numbers going on and off the stop as well as when to shift. What are some of the lowest numbers people have had success with. I have brought the stop on from .025 all the way down to .001. I've shifted from .091 all the way down to .021. I've even experimented with .001 in the timer and shifting at .021 with 4500 RPM. What kind of experiance have some of you had when trying low?

07-27-2011, 05:20 PM	#2
63corvette Senior Member Join Date: Mar 2007 Location: Canyon, Tx Posts: 552 Likes: 128 Liked 359 Times in 103 Posts	Re: Can you shift too soon?? The shift should come after the car settles down after the launch and varies by the car and track situation. Some people use a high gear only launch and let the torque converter do all the work. Stop should come on depending on how you want the car to launch. To me it varies by car and track situation and how you want it to launch. Just My 2 Cents Rick Cates

07-27-2011, 05:52 PM	#3
Mickey Whaley VIP Member Join Date: Dec 2006 Posts: 1,220 Likes: 0 Liked 1 Time in 1 Post	Re: Can you shift too soon?? You can do alot of things to early hopefully not when the light in the bedroom goes off, ive never seen seen many cars that are alike you are doing the right thing with testing when it gets consistent leave it alone!

07-28-2011, 08:17 AM	#4
Bill Baer Senior Member Join Date: Jul 2007 Location: Nothern IL Posts: 596 Likes: 1 Liked 1 Time in 1 Post	Re: Can you shift too soon?? I agree with Mickey " ive never seen seen many cars that are alike you are doing the right thing with testing when it gets consistent leave it alone" We shift on the stop @ 1.0 sec out which seems to be more consistent than shifting by RPM. __________________ Bill Baer 3391 SC, 339B SC, QR Last edited by Bill Baer; 07-28-2011 at 11:37 AM.

08-02-2011, 07:23 PM	#5
S/C 302A Junior Member Join Date: Oct 2009 Location: Diamond, Illinois Posts: 20 Likes: 0 Liked 0 Times in 0 Posts	Re: Can you shift too soon?? I just switched from shifting @ .4 out to .6 and believe it or not, that little bit seemed to help out my set-up. I did also raise my low side rpm (cruise rpm) 200. Both of those changes really worked for me. I totally agree with the testing and leave it alone when you find a good & consistant set-up that works for your combination. Now my 330' is the most consistant i've ever seen it. Hopefully it stays that way as we maybe start getting into some cooler weather! __________________ Dave Livesey 2007 Midwest Super Comp Series Champ