X15 Efficiency vs Performance

That I do not know.

565 - 4.30
605 - 4.10

 

What weight and how many axles you pull with these motor

 

How did your purchase work out… I have exactly the same truck 565 w/ 1850 Torque but mines an automatic so far everything’s good

 

3.25 rears 18 sp 22.5 low pro pull Midwest to west. Got a 565/2050 performance. Anyone bump up to 605/2050 from a 565/2050? Thoughts?

 

4 axle trucks, 3 axle trailers

Pulling 100-135k lbs

 

Your 605 is x15 productivity series your truck is going to pull load better then performance series with little better MPG.

 

i am going to buy cummins x15 efficency series i am going to start dry van reffer and flat bed from canada to us can any one recommend me what horse power and torque whould be best for me. i am asking because its my first truck for cummins

 

500 for fuel mileage with an auto

 

You can only get high 500v in productivity series. That’s the best so far.

 

450 hp 1650 torque with endurant 12 speed auto. 2.79 gears and 22.5 low pro tires.