47RE OD Questions

[devon lock]

Why does my truck run faster without OD? I ran a 12.5 with the overdrive shut off and the truck is @ 4000 rpm around the 990 mark. With the OD on I was running in the 12.6,12.7 range. I think it is shifting in OD too soon, I have tried adjusting the TPS but doesn't seem to do anything.

 

[SPEEDSHIFT]

What rpm would OD shift in at?

 

[devon lock]

What rpm would OD shift in at?

Around 2000 I think

 

[chrleb1]

Around 2000 I think

Yeah, that would definitely kill your time. Pull it out of OD and then shift it into OD arround 3,600.