Not really. Most will average 16-20mpg give or take. I can get 31 mpg going down hill though.........

 

It sounds like the Aussie diff ratio's could be different to the US!
Or we might have better fuel!
May be its the diff in weight between the F150 & Rams
When I get the rev-counter working Ill be able to see what the motor is doing at 105kph (62mph)

 

http://www.destroked.com/
http://www.fordcummins.com/

 

31 is impressive! I'd be curious what the RPM is and the curb weight.

Cya

 

Thats pretty good. I have the same output engine and the mileage at 65 is in the mid twenties.

 

Fill out your profile and sig.like the rest of us.

 

Sorry hounddog will do
Curb weight 5247lb (2380kg)

 

Meant Tedonlin150

 

You weigh 2500lbs less than I do..... Wow... Bet that truck can scoot... and that mileage just might be possible... Keep us informed... I'll be listening...

 

You could say that
once I put it in top gear you just sit back & steer no changing at all except towns & with the 3.5 gears helps with the consumption

 

What axles are you using? I'd think the stock axles on that Ford wouldn't hold up to the weight of the Cummins... and the torque.

 

Its got the ford 9inch with 31 spline axles with a NP205 transfer