KeithSmith13

My truck is a 2005 engine manufactured 7-20-04 how do i know if is is 600 or 610ft/lbs torque? Probably not any noticeable differance but would like to know. I looked on the data plate but it only shows HP not torque. Thanks in advance.

HighTen

It seems to be accepted on this forum that the latest tsb reflash gives a 2004.5 truck 610 lbft of torque. My guess would be to find out to what build dates this flash applies to (I can't remember) and if your truck's build date is outside of the dates, it has 610lbft?

DFD536

I e-mailed cummins directly, and the reply was they are both the same engine.. The latest reflash (037) upgrades the rated power to 610... Also, they made a point of stating that power is with the air conditioner on and engine fan engaged (gee, think they are ready for a 620 if needed )

Dennis

mikmaze

that mean the 18 037 04 puts me to 610??? if it does that is kind of them think I'll send them a little extra with this months payment, applied towards the loan of course!

falcondan9570

But doesn't the new 05s have a different "turbo-charger?".

Blue600

My turbo looks the same as the one on the 2005's.

DFD536

The 2004.5 has the same turbo as the 05.
Dennis