trans ratios

[chuck smith]

About what RPM's are you guys running at 70 mph in Fifth? I run about 2850. I am trying to figure out my gear ratios and final drive ratio of my RBT ZF. chuck

 

[Ross Nicol]

Chuck
The ZF gear ratios are on a plate attached to the side of the box toward the rear. Even has the reverse ratio but I've never been worried about what revs I'm doing or what speed while reversing.
Ross

 

[chuck smith]

mine appears to be missing

 

[Ross Nicol]

Ok, I have a .704 5th and 4.22:1 C&P and I see about 2800 revs at 60mph/100kph.
Ross

 

[Mike Christian]

Chuck,

Here is a picture of the plate location on mine...I plan to shoot a closer picture of it next week to record the gear ratios.

Mike