5.4 is a screamer!!!
I took delivery of a new 26 ft camper that weights just under 6,000 pounds. GVWR is 7,650, but it is empty right now. I live in Texas which has a lot of rolling hills. It rarely goes into over drive, ...
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ugh wrote:
I took delivery of a new 26 ft camper that weights just under 6,000 pounds. GVWR is 7,650, but it is empty right now. I live in Texas which has a lot of rolling hills. It rarely goes into over drive, so it stay sin 3rd gear and every time I hit a hill, it downs shifts to 2nd gear. Boy that motor can scream!
My truck has the 3.7? ratio. I remember someone mentioned that don't spend the money for 4.10, go straight to 4.30 for better performance. If I do that, will it stay in OD longer? I got 8 MPG, but I was expecting better MPG. If I go for 4.30 will it get better MPG for not down shifting a lot?
2001 F250 5.4 Crew Cab RWD.
Changing to 4.30 not only changes your rpms it changes the mechanical advantage so you deliver more power to the road.
Simple example
You have a bolt that tongues to 1000 ft lbs so you use a 10 to 1 multiplier so it only takes 100 ft lbs to get the 1000 lbs of torque but if you use a 5 to 1 it will take 200 lbs of torque to get the 1000 lbs of torque.
You will get better performance through all the gears and put more usable power to the ground without modifying the motor.
Denny
