lock up problem maybe?

[soot04max]

I went to the track last nite and ran several 13.02 @ 102-103. here is what I noticed, the rpms in 2nd and 3rd gear would hit 3700 and then it would finally shift. but it just seemed not to pull good in the first 1/8th mile do to the trans not shifting as fast as I would like.
when it would hit 4th gear it would pull hard and again in 5th it would pull hard. any ideas?

 

[Osubeaver]

Good possibility that's what it is IMO. I see in your sig you've ran 12.97 @ 106 which is a little slow for that MPH. Was that with the same setup and tuning? What were your 60' times?

I had a 5 star in my LMM for a while and had similar problems. No tuning or copilot settings fixed it. I'd often hit 4000 rpm in first gear. When I changed to a 1054 the problem went away and I picked up .2-.3. Not saying that's what would work for you. Just sharing my experience.

Hope you get it figured out!

 

[bullfrogjohnson]

X2. High stall converters don't like to couple quickly. Tuning can make a huge difference. I run the ML sledpuller which is as loose as they come. Tuning and leaving in 2nd or 3rd gear has solved all my issues. The suncoast converters don't seem to have as many lockup issues but when You get to big power they all have their limits.

 

[soot04max]

same set up. same tires and tune
60'=1.8
330=5.3
1/8th=8.2 @ 82.74
1000'=10.84
1/4=13.02

when I ran the 12.97 @106 my 60' were 1.9 and higher. I didnt leave with boost then

 

[whytry]

ur converter is not locking soon enuff idiot

 

[whytry]

ml tc all the way:thumb:

 

[gmduramax]

same set up. same tires and tune
60'=1.8
330=5.3
1/8th=8.2 @ 82.74
1000'=10.84
1/4=13.02

when I ran the 12.97 @106 my 60' were 1.9 and higher. I didnt leave with boost then

You should be able to get a 1.7 60ft. That would shave two tenths off your 1/4

 

[TrentNell]

There is now way for us to kn ow if the converter is not locking with out seeing the log , post it up and we can check it out an know for sure . until then we are just guessing .

 

[JoshH]

I've become a big fan of black box logging. It allows you to log both the ECM and TCM at the same time. You can log all of the standard ECM PIDs such as rail pressure, pulse width, timing, boost, RPM, MPH, etc, as well as some TCM PIDs too, such as input speed, turbine speed, output shaft speed, gear, fluid temp, etc. I like this because you can see for sure if the converter is locked by comparing input and turbine speed (there is actually a converter slip speed, but it just takes the difference between the two). Takes all the guess work out of it.

 

[soot04max]

There is now way for us to kn ow if the converter is not locking with out seeing the log , post it up and we can check it out an know for sure . until then we are just guessing .

Trent can you send me your e-mail address and I will get you my log?
Thanks

 

[TrentNell]

Trent can you send me your e-mail address and I will get you my log?
Thanks

[email protected]