pretty soon im gunna be runnin35's on my truck with 4.10's for right now..i have a 3.0 auto tranny.. how bad will it hurt my gas milage..is it gunna put alot more stress on my tranny n engine.. im going to re-gear to a 4.56 bout a month after the 35's are on..willi be okfor that period of time?

 

should be fine .. I have 4.10's with 35's and have been running then for a year now with no problems ..... mine is a manual tranny though.. and the gas mileage isnt the greatest..

 

aight well imma be traveling 600+ miles round trip..allhighway..expecting to get nothing but the worse gasmilage..but thanks tommy

 

The 4.10's will probably give you better mileage than the 4.56's I'm running. It's more stress and more possibility of breakage, but the worst thing is the power loss on a 3.0. I'm glad I put the bigger gears in -- but I could have lived with the 4.10's if I needed to.

 

where youll loose the gas mileage is when getting going, so on the highway it shouldnt be to bad. dont expect to have as much poassing ability though. also, try to get some sort of knowledge on how far your speedo will be off before you leave here. might end up with some tickets on your way home for unknowingly speeding.

 

thanks for bringing that up chris.. imma talk to brian and see if his guy will do it for me

 

yeah mpg will suck.

 

I have 35's but I have a 4.0L SOHC and a stick, my acceleration has been decreased some but not too bad, thats my concern for you, since you only have a 3.0. I think its at the very least going to be a real dog to drive until you can re-gear. I think its going to add a lot of stress also. Mileage wise I checked mine vs my gps and I was getting 14.78 mpg, thats with a light bar and off-roading(both hurt mileage some). I have noticed that at about 65 mph my motor only turns about 1800 rpm which is what gives me my great(all things considered) mileage. City mileage would be terrible I am sure.

I am not so sure I would want to drive my truck with just a 3.0 under the hood without 4.56 gears and/or some engine mods.

 

all in perspective, considering I have 35's I think 14-15 mpg is good. I talked to a guy with a stock dakota 5.9 and he gets 13 MPG imagen if he gets lifted and runs 35's

 

Here's a handy tire-size calculator from TRS. It will tell you how much your speedo will be off with the new tires

http://www.therangerstation.com/tech...rom_Tires.html

 

thanks alot guys.. after i get this stuff put on.. newgears n a mirco tuner are comin..hopefully it will help a little bit

 

4.56's will be perfect for your setup

 

It sounds like you've already got things figured out, but I found another tool on TRS to calculate gear ratios after a tire swap:

http://www.therangerstation.com/tech...tioChange.html

By their calculator, the 4.56 gears will be the best choice. You do the math!!

 

hey thanks mike.. ya i found one of those calculator last nite

 

i have 4.10s with 35s, and have broken my 5 speed manual 2 times now (outputshaft the first time, second time blew up first gear and the counter shaft) ..... im going to regear to 4.88s ( getting 37s next set of tires ) ... most my friends blame my tranny breaking because of the added hp from the supercharger ... meh i dunno ... you should be fine, but i would def regear to 4.56s.

 

jared u ..or anyone at have the rear output shaft seal leak at all? mine is leaking a little bit..been like that for a 2 months...but my tranny fluid is still full...thats really the only thing im worried bout ( think thats what its called.. where the driveshaft goes into the tranny)

 

well my outputshaft seal is different from yours, as i have a tcase that bolts to a different extension housing to the tranny. mine has not had any problems with leaks, just snapping that outputshaft in half was my problem .. id get it fixed, a 2wd should be fairly simple to fix, remove the drive shaft, remove the seal, install a new seal, install the drive shaft.

 

aight thanks..i got sum lucas oil.. stop leak..but i dont need to put it in..cuz then ill overfill my tranny= A BIG NO NO..but ok

 

I have to agree with your friends, I don't think the tires alone cause the tranny problems, the combination of tires and supercharger is what most likely did it in.

 

according to that I should be running 4.88's, stock tires are 30 inches right ? So i went from 30's to 35's and I had 4.10's it says I should go to 4.78 which is not made the closes thing would be 4.88.

Does that sound right ?

 

Yep, although it depends on how much of a toy truck it is..
if it wasnt the Daily driver I'd definitely get 4.88's or higher.

Rand

 

not a DD at all. 4.88 is the biggest the front diff will take. 5.13 is the biggest the rear will take anyway even if the front could take it.

considering it, after a 31 spline swap, and maybe a selectable locker(late this year hopefully). I would like to get the rear 31 spline axel and do the gears and diff and all and have it done and setup before installing it. maybe even do the front a couple weeks before, as long as didn't put it in 4wheel until the front and rear gears match.

 

And perhaps the fact that you beat the **** out of your truck wheelin' it!

J/K bro!

 

The 4.88s should do you well. The calculator is nice in that it provides the "theoretically" correct axle ratio. As you're aware, we're a bit limited in ratio choices. You'll be off in the ratio only slightly, but the 4.88s will get your engine back into the right powerband, and make your speedometer and odomoter read more accurately (if you haven't already flashed the EECM for your 35s).