when should I set the tc to lockup?Should it stay unlocked in lower gears,then lock in 4th?

 

I think it is more of a matter of choice.... some people install the manual switch to lock it in low gears and they get a .1 or or out of it sometime. I think it is more of a preference and what gets you what you want.... I like to keep my converter locked under decel all the way down to about 8 or 9 miles per hour, my motor engine breaks incredibly well. better than any 5-speed I have every driven.

 

turning the converter on at high loads is gonna destroy the clutch. thats my 2cents. its a fuel saver not a performance enhancer.

 

I have to agree with funstick, Its for gas milage not performance. Have you ever seen the friction material for these things? Is is like a sandpaper disk. Its not much! It is not designed to hold torque, that is why it is set to come on in higher gears and under steady throttle and unlock during braking.

 

I will have a 2200-2400 stall tc.I'll have a tranny cooler too.When the converter is locked is good or bad for performance?I understand to have some lockup in daily driving.I thought if I set the low gear table to 75 tcc lockup,1-2- some of 3 gear will be unlocked.Then set the not lo gear table to 40mph.That way 4th will lock.Would more power be transmitted if the tc is locked 90%,as long as you have torque down low.Does'nt the converter unlock when u hit pe?

 

I guess it all depends on what you want as performance. When the TC is locked you do not get any torque multiplication, It is more or less a direct drive. With it locked you will reduce slipping but I would think that you would want the torque multiplication for greater performance. As for unlocking at Pe I am positive it does. I am going through my constants and just going to move my engagement speeds up to about 40-45. Stock it is 21MPH! Its really annoying. I used to have an ADS garbage chip in and the only thing I liked about it was the lock up points. I took it out because it had a speed limiter at 110MPH, and this was the strip chip! GARBAGE. OH well it was in the car when I bought it.

 

Could you explain more about the torque muliplication?I also like the constants around 40-45mph.From what I have gathered the lockup is to increase tranny life,gas mileage.But for max power it needs to be unlocked.So what table is the" pe tc unlock table(s)"?I could leave the constant stock,just use the PE unlock table for performance.thoughts?

 

Torque multiplication is all in the convertor design, it uses the pitch of the blades it the turbine and stator. It multiplies torque when they spin at different rates, when the convertor is locked they spin at the same rate. That is the easiest way I can explain it. As far as changing the lock up according to PE, I have no idea if it is possible or any idea how to do it. I only know about changing the MPH constants. Someone else might know, but I don't. Hope this helps out somewhat.

 

anyone?

 

I acctually burned a chip today and I used Tuner cat and with this program there are more changes that you can make such as tps % and such. I don't have this program I had S10WILDSIDE help me and he had it. It looks like if you have Tuner Cat you will be able to really fine tune TCC lock up.

 

Do not lock your TCC at high load, you will burn it up!!! The stock converter and most aftermarket converters have single disk TCC setups that are meant only to provide economy while in unloaded cruise conditions. Setting your on off MPH for the TCC really depends on your driving style. If you have a daily driver and cruise at sustained speed for any period of time set it to come on at that speed as far highway driving you will always want it locked otherwise your fuel economy will go to ****. For my situation I have no need to lock my converter unless I am in 4th on the highway as I cant stand the damn thing engaging and disengaging in low gear, as rule of thumb most people will not allow the TCC to lock at anything less than 40-45 in low gear.

In a drag race situation there is really only 1 reason to lock the converter and that would be at the near end of the 1/4 mile while in third gear to prevent the engine from spinning out of its power band. If you lock it at any point before that you will most likely hurt your ET as you will bog your engine. The guys who do lock their TCC in this situation are making a bunch of power, know exactly what they are doing, and running aftermarket converters such as 5 disk TCC setup in a Vigilante.

 

OK,what about the unlock prevention constant.Does'nt that lock it no matter what at the mph in the table?So I do not want my converter locked at all durring wot.What table would I use to modify when the tcc unlocks in pe.Are does the table(s) auto unlock at pe??

 

Having the converter locked during WOT and flash locking it at the end of the 1/4 at 5000rpm with a healthy motor are 2 differnet situations. Probably best to have 1 chip for the 1/4 track and another chip for street use.

This post might shed some light.


https://www.thirdgen.org/techbb2/sho...&highlight=tcc

 

ok so keep tc unlocked in wot.But what is the name of the table that controls tcc lockup @ wot??? I will remove the check ball from input shaft,per grumpys suggestion