Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

setting shift points

Old 09-27-2007, 04:59 PM
  #1  
TECH Apprentice
Thread Starter
iTrader: (18)
 
steve40's Avatar
 
Join Date: Jan 2004
Location: windsor, on
Posts: 338
Likes: 0
Received 0 Likes on 0 Posts

Default setting shift points

any guides or pointers on where to start? i have a graph from a dyno session to help out.
Old 09-27-2007, 05:35 PM
  #2  
11 Second Club
iTrader: (3)
 
98REDZ's Avatar
 
Join Date: Nov 2004
Location: Tulsa, Oklahoma
Posts: 274
Likes: 0
Received 0 Likes on 0 Posts
Default

More than likely at your peak power point,...or couple hundred RPMs prior to that more than likely.
Old 09-28-2007, 05:14 AM
  #3  
10 Second Club
iTrader: (22)
 
junior28570's Avatar
 
Join Date: Feb 2006
Location: coastal N.C.
Posts: 536
Likes: 0
Received 0 Likes on 0 Posts

Default

to get the most out of your cam, you'll want to have your trans. shift beyond your cam's peak. I've heard as early as 300rpm past and some as far as 1K. I had mine set at 300rpm past peak.. made a huge difference! It was shifting approx. at the peak or 100 before. On the dyno sheet I have, my cam holds it's peak power from 6100 till the tuner backed off @ 6800.
Old 09-28-2007, 09:07 AM
  #4  
LS1Tech Sponsor
iTrader: (25)
 
performabuilt's Avatar
 
Join Date: Aug 2006
Location: BLOOMSBURG PA
Posts: 10,858
Received 78 Likes on 56 Posts

Default

Allways take into count the time from comand to actual shift . Where the PCM operates at the speed of light the trans does not so for instance if you want a shift at 6000 you may need to comand at 5500. Its actually a bit more complicated than just that since MPH plays a big role and other variables too. But I am not a tuner just information I have picked up over time.
__________________
Built..PerformaBuilt..Tough

Call 888-744-6542




Thread Tools
Search this Thread

All times are GMT -5. The time now is 03:27 AM.