Ive heard of it being done but I wanna see what you guys think. On a 4x4 could you do a steeper gear in the rear then in the front. Do one now for towing, then do a not so steep gear later for 4wd. Could it done and what are the problems. Id think it could be done.

 

in your truck you cant have different gears in front in back and use your 4wd. your drive lines will bind and go boom.

you can change the rears alone just dont use 4wd

 

Your question is ambiguous. If you mean to have different gears in the front and back, yes it can be done. Having written that, if the difference is great enough it will break something. In old school 4x4ing you would see something like a 4.11:1 in front and 4.10:1 in the rear. The idea was that the front would pull the truck forward. Today it is considered best to have the same front and back.

Regards

Jean Marc Chartier

 

boom!

why would u want different ratio's anyway?

 

So could I put 5.13's in the rear and 4.88's in the front and still be able to use 4wd. The only reason for this is I cant find 5.13's for the front.

 

In a WRX STI you can dial in the power between the rear and front wheels from 50/50 to 70/30

But you aint goin that fast. So why would you want the difference? FOr more "push" That could be weird at hwy speeds if you go into 4WD.

 

I read a thread on ford truck world where a guy had 5.13's in the rear and 4.88's up front. Apparently the difference isnt substantial enough. He had no problems with it.

How it worked, I have no idea. I have 4.88's front and rear.

 

What does that have to do with this thread. 4wd is not awd. And if i have my way I will be that fast. But can it be done. I need proof not quesses. Dont wanna do it and then engage the 4wd on the trail and have the drive shaft go boom. FACTS ONLY PLEASE.

 

On a high-traction surface, you can run into front/rear driveline binding problems. But if the surface has lower tracion, then you shouldn't really have any issues.

But there aren't any advantages to having two different ratios...having "one done for towing" and "one done later for 4WD" like you note doesn't make sense.

The difference between 5.13 and 4.88 isn't huge...just a few percent. Personally, I think you're better off running the same front/rear, this way you won't have to worry about "are my tires slipping enough to release the front/rear driveline bind".

 

Theoretically, yes - *IF* you run different size tires front and rear. You would have to do some math with a tire size/gear ratio calculator. The rears would have to be taller than the fronts.

Not worth the hassle - put 4.88's in both axles and use shorter tires if you want to have a lower effective gear.

 

I have a 1978 Ford Bronco and have been restoring it as i have tima and money (kinda hard with school). It has a 3.50 in the rear and a 3.00 in the front, offroad in the mud is fine, but as soon as I hit gravel or pavement it is binding in the transfer case and deos not want to come out of 4hi. If I unlock the front hubs it will come out fine. I have heard of doin this, but only in mud boggin' trucks. I bought this problemn with the truck and the motor blew before I could change the front to a 3.50.

Mark