i ran a 2600 without a tune for a couple hundred miles without any problems. i would think you should be fine without the tune for a while.

 

I usually prefer it to stay unlocked in town and then lock-up around 50 or so, then I like it to stay unlocked at WOT until just before the 3-4 shift.

 

does locking it up around a certain MPH just engage the tcc and it wont slip any and provide full transmission engagement?

 

Pretty much, If the tune and the torque converter are stock that is. You may see a few rpm's slip but not much. Now if the Trans tables are stock and you install a smaller diameter torque converter, it will slip more at lock-up. Due to the smaller diameter of the lock-up clutches. The more clutches and/or the bigger diameter the torque converter is, the better it will hold during lock-up. This is important if you plan on towing anything.

G.M has the tcc min duty cycle table set pretty low so the tcc applies soft, usually you can barely feel it lock in a stock truck at part throttle. With my Art Carr torque converter, I set my min duty cycle table the same as my max, giving the tcc as much oil as possible. I also increased line pressure to get even more oil into the torque converter. The result is a torque converter that locks solid and much faster than stock and is very noticeable. But it won't slip during lock-up at low rpms with a load. Were line pressure and tcc oil supply pressures are the lowest.

 

so no matter how quick you lock up at you still dont reduce the torque converter specs like if you increased all the pressures and lock up speeds but the stall was rated at 3000 then it would still lock at 3k? also, what do the speeds have to to with locking, i have an LS1 edit and plan to run the tcc stock for a little bit but then get it retuned for it

 

The stall speed and lock-up speeds are to different things all-to-gather. If you buy a torque converter that is set to stall at 3000 rpm behind a stock 5.3l then it should stall around 3,000 rpm no matter what you set your lock-up speed at. ***Other variables come in to play as far as how high a torque converter will stall. Horsepower, torque. Etc.***
Changing line pressure may change the behavior of the torque converter a little bit. I have increased line pressure to over 200 psi (I also had a manual gauge hooked up to verify this) I did notice the stall seamed tighter, or slipped less while the tcc was unlocked. Of course this could have been in my head because I'm not sure of the exact oil flow through the 4l80e.

With ls1 edit you will most likely set your lock-up speed my mph and gear, not RPM. The lock-up solenoid does not care how big the stall speed is, it is going to apply the clutch at the set mph and gear. (It may need more oil depinding on clutch size, etc.) And The tcc is usally set to lock-up in third and fourth gear, so you should be done stalling up rpm and half way down the track by that time.





BTW, sorry for taking over the thread white1.

 

thanks a bunch wilde, what would you recommend, speed and gear wise to lock up a tt3000 behind a 5.3 with 4.10's ls1 and an LS6 cam, soon to be getting a wet 150?

 

What trans is in the truck?

That really depends on how you like the truck to drive.

I wanted my tcc to lock very soon to save on gas, plus it locks at such a low mph (27 in o.d) when I come home threw the housing development, The tcc will lock which helps keep the noise down and gets my egts cooled down so I can just pull in the garage and shut it off.

Not everyone would like this, but I can also revert back to my higher race lock-up speeds with just a push of a button. (tow/haul)

I would start with the stock settings, drive it around and see how it acts. You may find you like the mph it locks at the stock settings. Most tuners usually make higher stall torque converters (how was that Flyer?) lock-up at a lower mph though.
Hey we are back on topic.
lol

 

No problem, thats what this site is for. Helping others. I was thinking with my W4M tune and my TCI 3000 it was locking up about 45, I was just wondering where others had theirs locking up as Im going with a 3200 when it gets here. Im sure Ill do some adjusting, just looking for a starting point.

 

i have a 4l60e, i already get 12mpg in the city and 14ish highway so i figure it cant get MUCH worse but who knows and i do do alot of city driving but that will soon change when i go to college and the only dirving i do will be at the strip and to and from home. basically would the stock lock-up speeds be more around what you have set, lower or higher and one semi-off topic question, would a 4l60 stall fit in a 4l80 cuz when my tranny craps out i figure ill invest in the pig