is this even possible? I've heard people talk about it but never seen it, or heard how it would be done.

 

TCC solenoid is powered inside the trans pan all the pcm does is supply a ground to the solenoid.

So toggle switch one side to ground and other side to tcc solenoid and TCC pwm solenoid = full control over TCC lock up

 

i run a 4l80e in my 454ss truck and i have my lockup on a toggle switch. just ground the signal wire to your lockup when you want and cruise unlocked whenever...

 

... Sounds like an easy way to make a glory pass on the dyno...

 

Been there, tried to do that, didn't work.

 

i couldnt afford an $800 controller for the 4l80e on my carbed motor so i had to settle for a Jakes manual control box and wire it in......

 

Didnt make more power or didnt lock the tc?

 

Couldn't convince it to stay locked without upshifting unexpectedly during the pull. Think tire-spinning 2-3 shift (in lockup at WOT) on top of a Dynojet single-roller dyno, held back only by 4 safety straps.

As far as the power, yes, it made a lot more (~100hp) locked up instead of unlocked. I say 400rwhp...but the real number is probably a little higher than that and a little lower than where the graph put it. It's just a heavy truck though, it's not like it has ever outrun a Ferrari at sub-120 speeds(if this happened, it was in Mexico on some forgotten dusty road near the border).

 

Sounds like asking for trouble if you dont know know what you are doing, also a triple disc would be a must for wot pulls.

 

Can you program the TC to lock up with HP tuners? And is this something that would be beneficial in sled pulling?