If your 1-2 upshift is 43 mph ...... when do you lock up your torque convertor .... and why?

 

are you running a 112 or 140? how much boost?

thanks

 

I have a 140, and boost depends on the day.

Im just curious what opinions there are about convertor lockup for racing only. Seems most lockup down low (30 mph or so), but I also read on other forums (using other vehicles) that people command lockup in third gear. Looking for an education on this topic.

 

My PI converter locks up in 2nd gear at WOT... If that helps...

--Steele

 

mine locks up around 50 or so if im not still accelerating, i think most of that can be changed with a chip i think

 

I don't know the MPH points but I believe at WOT it is just after the 1-2 shift. If you wach (and listen) to the clip of Bill (HDmllnium) running the 10.?? you can destinctly here his lock up shortly after the 1-2 shift.

Eric

Ps. His must be set pretty well as he can run 10's in the heat all day!