6-Speed ZF into a 1997?

[L9000]

JUst wondering if anyone has every done this? I have a line on a good used ZF-6, and was considering putting it in my truck. I will need a late model transfer case and custom drivelines of course. Crossmember is different too... I don't think it would be that hard to do. Surely someone on here has done it...

Thanks!

[97powerstroker]

havent done it,but ive heard its plenty do able.i would like to do it,goodluck

[monte psd]

i bolts up basicly same trany just another gear

[PSDfreak]

I wouldn't call it bolt up...Drive shaft(s) will be different length, t-case different, a cooler and lines will need to be run (The ZF-6 has a pump pumping fluid through a cooler @ front of truck)...not sure if the hydraulics will interchange or if it'll line up with hole in floor either. I do know it has been done though...but from what I have heard its not as easy as it sounds.

[OverkillMotorsports]

I have heard the final drive ratio is the same as the ZF-5 so no better fuel mileage with the swap. You will be able to brag you have a six speed however.

[Tsgs69400]

The 6 speed has a .72 OD while the 5 speed has a .76 OD.
According to a calculator online:
3.55 gears, 265/75/16 tires, at 70 with a .76 OD= 2005 RPM
3.55 gears, 265/75/16 tires, at 70 with a .72 OD= 1899 RPM
add 33" tires....... .76 OD= 1923 RPM
.72 OD= 1822 RPM

[jethro]

the t case should bolt up