Will this help the tranny live?
Thread Starter
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
Will this help the tranny live? I just ordered my TCI SF3000 stall (2.2 STR) with larger lockup clutch
Just wondering what I can do to help the trans live for at least a year but still give decent performance. I have 2.73 gears and will be running street tires all year
Here is what I was thinking:
shiftpoints (6200rpm 1-2 and 6300rpm 2-3)
increase line pressure 15%
Leave TM turned on
Drop shift times by only 50% instead of 100% like the predator/HPP
What do you think? Its going in my 99 vette (~3380 pound raceweight) and I'll only be hitting the track very intermittently just to get an idea of what the car is capable of.
Other mods:
TPIS headers with 3 inch Xpipe
Z06 catback
Halltech Stinger intake
180 stat
Tuning
Just wondering what I can do to help the trans live for at least a year but still give decent performance. I have 2.73 gears and will be running street tires all year
Here is what I was thinking:
shiftpoints (6200rpm 1-2 and 6300rpm 2-3)
increase line pressure 15%
Leave TM turned on
Drop shift times by only 50% instead of 100% like the predator/HPP
What do you think? Its going in my 99 vette (~3380 pound raceweight) and I'll only be hitting the track very intermittently just to get an idea of what the car is capable of.
Other mods:
TPIS headers with 3 inch Xpipe
Z06 catback
Halltech Stinger intake
180 stat
Tuning
My old C5 with 80K miles and tons of dragstrip passes is still going, just leave TM on and you will be OK. ET difference was very little with it on and off but that trns would have died long ago if I turned it off I'm sure. I never even ran a trans cooler, nice thing with the C5 is you watch your trand temps and even with a vig3200 on a 100 degree day here it never got that hot.
Thread Starter
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
Thanks KP
A couple of guys I know with C5s dont run a cooler either. They ran a 180 stat and temps were very consistent (180-190 range consistently which isnt bad)
I'll probably just slightly raise the line pressure, raise the shiftpoints to 6200-6300rpm, reduce shift times slightly and see how it works.
Did you play with shift times on yours or line pressure or just move the shiftpoints?
A couple of guys I know with C5s dont run a cooler either. They ran a 180 stat and temps were very consistent (180-190 range consistently which isnt bad)
I'll probably just slightly raise the line pressure, raise the shiftpoints to 6200-6300rpm, reduce shift times slightly and see how it works.
Did you play with shift times on yours or line pressure or just move the shiftpoints?
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I did the pressure thing like LS1edit used for an example, left the times stock. If I remember I put the max retard on shifts to -5 degrees for TM instead of the factory that was like -10 on the shifts. Made a little difference in the way it felt but really didnt change much at the track except a little MPH.
Those things have like 15 feet of steel pipe (trans is in the back) going to the cooler so thats kind of a cooler I guess, plus these newer cars are locked up 80% of the time so they just dont get that hot. One thing I did notice that if I tried to do a burnout at the track and shifted into 2nd gear the temp would shoot way up, if I left it in 1st it wouldnt heat up that much so I would take it easy on the burnouts and just leave it in 1st
Those things have like 15 feet of steel pipe (trans is in the back) going to the cooler so thats kind of a cooler I guess, plus these newer cars are locked up 80% of the time so they just dont get that hot. One thing I did notice that if I tried to do a burnout at the track and shifted into 2nd gear the temp would shoot way up, if I left it in 1st it wouldnt heat up that much so I would take it easy on the burnouts and just leave it in 1st
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if you leave tm on you may have horrible shifts- alot of hesitation between them and the car will be alot slower than with it adjusted/off. i know people like to save their trans but my car was ALOT slower with the tm on- especially with 2.73's. it will bog like crazy between shifts, and cost alot more than .1 if you have an issue like i had.
i say the cooler is key, if you are not going to do the shift kit then you may get away without tm problems, and the shift kit may/may not be necessary depending on how your car reacts. if you encounter the issue elminate tm it if not don't. i know i HAD to...
i say the cooler is key, if you are not going to do the shift kit then you may get away without tm problems, and the shift kit may/may not be necessary depending on how your car reacts. if you encounter the issue elminate tm it if not don't. i know i HAD to...
Thread Starter
TECH Senior Member
Joined: Nov 2001
Posts: 10,341
Likes: 1
Sleeperstyle,
cool thanks for the info
I dont find the lag between shifts too bad now but it can be improved.
I only need to worry about the 1-2 shift as I'll be at the traps for the 2-3 shift (~112mph)
KP,
I'll do the same with the TM reduction to 5 instead of 10. Can you specify TM per each gear?
What exactly did you do for line pressure?
I can't wait to get the converter headers and Z06 catback in the car.
Thanks guys!
cool thanks for the info
I dont find the lag between shifts too bad now but it can be improved.
I only need to worry about the 1-2 shift as I'll be at the traps for the 2-3 shift (~112mph)
KP,
I'll do the same with the TM reduction to 5 instead of 10. Can you specify TM per each gear?
What exactly did you do for line pressure?
I can't wait to get the converter headers and Z06 catback in the car.
Thanks guys!
I set the overall spark retard limit to 5, I'm looking at some of the old LS1edit files I have here. I'm not sure if you can change it by gear but I remember fooling around with it and ended up just setting the overall limit.
If you have the old LS1edit directions they just had to move a bunch of numbers so it was stock cold and pressure was incresed as it got hot - basically just upping the pressure at higher TPS. Been a couple years since I played around with 4L60 settings
If you have the old LS1edit directions they just had to move a bunch of numbers so it was stock cold and pressure was incresed as it got hot - basically just upping the pressure at higher TPS. Been a couple years since I played around with 4L60 settings