5 Ton repower mpg?

[290smallcam]

What MPG are any of you out there getting now that you have swap out the NHC 250 for something else? Big cam or small cam? Lets even include those how have added a turbo, dual fuel line etc.to the NHC 250. Did the MPG go up, or did it go down?

 

[98G]

In an M818 the NH250 + turbo gets better mpg than the stock NH250. The comparison is 7mpg vs 5mpg.

 

[simp5782]

Dual fuel lines only improve throttle response.

a fuel cooler will increase mpg.

modded NHC250 with CAT 7155 and T1138 on 395s. 8.4mpg running 68mph at 1800rpms from Memphis to Montgomery to save Eli and drag him home

 

[Tow4]

The way these trucks are geared, you have to run the engine at or near red line to go 55 or 60 mph. Any engine running at or near red line is going to use a lot of fuel even when the truck is lightly loaded. If you want to improve the fuel economy, do something to reduce the rpm like gearing (transmission, etc.) or larger diameter tires.

 

[290smallcam]

Right, such as running 16:00R20's.