I currently havea 98 Ram1500 4X4 ( look in my signature for the rest) the truck came with 4.56 and I have a 360 engine. I was thinking about dialing it down a notch because 85-90% of my driving in highway. I have 35x12.50R17 Dunlop Radial Mud Rovers. Dana 44 front and Chrysler 9.25 Rear. Thanks!

 

not to sound ignorant but is there a question somewhere in there?

 

I keep staring at the post and I cant for the life of me find a question mark. I assume you are wanting some gear questions answered. Be more specific and I am sure someone will have an answer. You could always try searching there is about a ton of threads about gears.

 

just because you dont have your questions answered in the first few hours of posting, dont assume noone wants to help.


you want to dial it down for highways?
are you going to be offroading much then?

if not, drop the lift, and the tires. the rest is good enough for highway driving.

 

His problem he is asking about is his gears, but as I stated in the other post he did asking this exact same question, that is the right gear for the tires he has. Maybe go done to 4.10, but not any lower (numerically) then that or you could hurt your mileage on the low end, and hurt your off-line performance.

 

My orginal post was under a different title but same question and was there for 5 days.

 

Welcome to DF. 4.56 gears are probably overall better for your setup, but 4.11 will also work. 4.11 will drop your engine rpm's by 10%, but the trade off will be slightly more slugglish get up and go. if you have to buy the new gears and pay someone else for the install, your cost could be anywhere from $750-1500.

While driving down the highway, if it was mine, i would try to keep the rpm below about 3000, either by slowing down or changing gears. With a lifted truck and big tires, i would just slow down.

Overall, if it was mine I would leave it like it is. Hope this helps. By the way, you are more likely to get a response if you 'bump' an old post rather than put up a 2nd an 3rd duplicate post.

 

35" tire
4.56= 4.14 final
4.10= 3.72 final
3.92 = 3.56 final

I agree with the others, 4.10 is the lowest you should go if you do decide to swap them.

 

how about we keep this to one thread next time

 

Actually my rpm's are about 2100 @ 70 mph. My best friend works as a service manager at a Dodge dealership and he did some formula with my tire size and axel ?????????? and came up with a no. 578 and programmed the computer so the mph would match up. Since I drive 70mph on the hwy my tach is right at 2100 rpm's.