4 barrel LA Intake

MoparDaddy said

I can tell you now that I don't remember what gearing is in my np435. I found that info once about 6mo ago, but don't recall. Truck calls for 235/85/16. I have 265/75/16 on it now (same height). Do you know off the top of your head how to obtain this info?

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Tire height info is here: http://www.jekylhyderacing.com/HeightofTires.htm

As far as your transmission, I haven't searched for you model transmiission, yet you have a granny first gear so that should be around 4:00 to 4:07 which is very similar to the NV3500 except yours does not have an overdrive. Knowing all of what I stated have a huge effect on gas mileage.

My 90 Chevy p/u got almost 20 mpg with its NV3500 yet when I installed a T56 six speed, it got 23 mpg and now with it's LT1 and much more HP, it gets around 27 mpg