Well guys I had a question on how do yal do it with yal convertors at WOT, do yal lock it up or yal dont, leave your input if yal do or not and what helps more

Thanks Roman

 

never lock mine unless cruising in 4th gear above 45mph under light throttle

 

My truck seems to run better with the verter locked. But I do not lock it untill 105.. Or reg cruise @ 50..Locking the vert is hard on the clutches, unless you have a multi disc one, I would not rec doing it..

 

well i have a circle d triple disk, and plus its a 4l80 if it makes any difference.

anyone else..??

 

Nope!

 

It'll probably et quicker with it unlocked. It really depends on the combo, but until you start making big power, unlocked will probably work best. Unlike a turbo.

 

so basictly i shouldnt lock the converter..??

 

I'd do a couple back to back runs to see, but I'm guessing it'll be quicker unlocked.

 

With your setup, I wouldn't worry about breaking anything. Like Blown06 said, try it both ways at the track, and see what works better.

 

After I made my last post I got a little curious so I pulled up a bunch of old logs in HPT. Here is what I came up with...

At the time when I had power to trap around 120 mph, I was running 3.73 gears, 28" tires crossing the line around 5600 rpm with the converter unlocked showing about 6% slip. With this combo, if I locked the converter I'd cross the line around 5400 rpm (virtually 0% slip) still around 120 mph but a slower et.

Later I moved to a 4.56 gear and a 29" tire with slightly more power I was trapping around 126 mph at 7000 rpm with the converter unlocked (near 6% slip). Then locking the converter I still trapped around 126 mph but crossing the line at around 6700 with an improved et.

Moral of the story is that it really depends on your power level and gearing. Obviously if your gearing and power has you crossing the line a 5000 rpm, your going to lose et by locking the converter further losing more rpm (horsepower).

Power levels with prochargers are very rpm dependent. If you can lock the converter making the driveline more efficient while still keeping the motor in the meat of the power band you will pick up some et.

Happy testing!