TC Lock-Up Switch

[bullfrogjohnson]

Who all is running a hardwire switch? I have been doing alot of testing lately and my TC lockup is all over the place. It never locks up at the same time during a handfull of boosted launches.

I dont want to shell out for a co-pilot. So I am thinking about doing a flip switch and ground the TCM terminal.

What are the side effects of doing this mod though? I know on the Dodges it cause alot of stress on the input shaft. This will only be used on the drag strip and pulling tracks. Truck is not a daily driver.

 

[TrentNell]

Who all is running a hardwire switch? I have been doing alot of testing lately and my TC lockup is all over the place. It never locks up at the same time during a handfull of boosted launches.

I dont want to shell out for a co-pilot. So I am thinking about doing a flip switch and ground the TCM terminal.

What are the side effects of doing this mod though? I know on the Dodges it cause alot of stress on the input shaft. This will only be used on the drag strip and pulling tracks. Truck is not a daily driver.

i know one guy that its working for but it throws codes ..... it is locking the converter though he flips it after secound gear . not shure what the risk is . he is running a waay loose converter though .

 

[paint94979]

I thought this was impossible without redesigning the Valve Body... big $$$.

 

[TrentNell]

I thought this was impossible without redesigning the Valve Body... big $$$.

1st gear lock up is .... 2nd is possible but as i stated above i know it works but at what cost i dont know ... mike or some one else would have to chime in .

 

[Mike L.]

You will lose reverse if you try a switch and have to clear the code before you can unhook from the sled.

 

[Cougar281]

By just grounding out the TCC Solonoid, you're asking to burn it out. The TCC Solonoid isn't designed for 100% duty cycle.

 

[SmokeShow]

it is acheivable, without coding, with a switch on one of the wires of a co-pilot though, right?


C-ya

 

[bullfrogjohnson]

Well if this isnt such a good idea what are some other options, other than a co-pilot?

 

[duratothemax]

not to mention with no PWM (ie, if you just ground the wire) the converter locks so hard/harshly that Id be afraid to try it at anything over 15% throttle.

ben

 

[bullfrogjohnson]

not to mention with no PWM (ie, if you just ground the wire) the converter locks so hard/harshly that Id be afraid to try it at anything over 15% throttle.

ben

I was thinking of doing this with my current 1st gear delete TCM tune so I bump it out of 1st then lock the converter then start to spool

 

[JoshH]

I was thinking of doing this with my current 1st gear delete TCM tune so I bump it out of 1st then lock the converter then start to spool

That would not work well at all. It would kill your truck.

 

[duratothemax]

I was thinking of doing this with my current 1st gear delete TCM tune so I bump it out of 1st then lock the converter then start to spool

yeah..what josh said. You'll get a clunk/lurch and the engine will stall. This is bad for the pump, converter, and engine. Dont do it.

 

[bullfrogjohnson]

Well with that said, any hint or tips on tranny tuning so that lockup is more consistent?

 

[dmaxfireman]

6 speeds have this table. do you have something similar?

 

[duratothemax]

6 speeds have this table. do you have something similar?

yes, but it doesnt seem to do anything. There are still more limiting tables.

ben

 

[05smoker]

I'd like to be able to unlock at the end of a run.

Isn't the co-pilot just putting a switch on the blue wire IIRC??

 

[dmaxfireman]

bummer

 

[The Neens]

Well with that said, any hint or tips on tranny tuning so that lockup is more consistent?

At what RPM do you have your WOT shift points?

 

[dmaxlover]

Wasn't Brayden working on some sort of lockup/manual shift controller?

 

[duratothemax]

Wasn't Brayden working on some sort of lockup/manual shift controller?

yeah hes been working on it for like 3 years...............