4.10 LS w/35's - Ranger-Forums - The Ultimate Ford Ranger Resource


Drivetrain Tech General discussion of drivetrain for the Ford Ranger.

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  #1  
Old 01-02-2006
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4.10 LS w/35's

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?
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  #2  
Old 01-02-2006
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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..
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  #3  
Old 01-02-2006
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aight well imma be traveling 600+ miles round trip..allhighway..expecting to get nothing but the worse gasmilage..but thanks tommy
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Old 01-02-2006
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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.
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Old 01-02-2006
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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.
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  #6  
Old 01-03-2006
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thanks for bringing that up chris.. imma talk to brian and see if his guy will do it for me
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  #7  
Old 01-03-2006
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yeah mpg will suck.
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Old 01-03-2006
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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.
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Old 01-03-2006
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Quote:
Originally Posted by ryanrebel125
yeah mpg will suck.
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
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  #10  
Old 01-03-2006
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Quote:
Originally Posted by got-dirty
...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.
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
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  #11  
Old 01-03-2006
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thanks alot guys.. after i get this stuff put on.. newgears n a mirco tuner are comin..hopefully it will help a little bit
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  #12  
Old 01-03-2006
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Quote:
Originally Posted by red_fx2
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
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  #13  
Old 01-03-2006
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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

Quote:
Originally Posted by Ranger1
4.56's will be perfect for your setup
By their calculator, the 4.56 gears will be the best choice. You do the math!!
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  #14  
Old 01-03-2006
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hey thanks mike.. ya i found one of those calculator last nite
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  #15  
Old 01-03-2006
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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.
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  #16  
Old 01-04-2006
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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)
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  #17  
Old 01-04-2006
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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.
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  #18  
Old 01-04-2006
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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
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  #19  
Old 01-05-2006
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Quote:
Originally Posted by Rangerboy03lvl2
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.
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.
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  #20  
Old 01-05-2006
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Quote:
Originally Posted by mkoenig
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!!
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 ?
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  #21  
Old 01-05-2006
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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
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  #22  
Old 01-06-2006
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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.

Last edited by Ranger1; 01-06-2006 at 12:40 AM.
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  #23  
Old 01-06-2006
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Quote:
Originally Posted by Ranger1
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.
And perhaps the fact that you beat the **** out of your truck wheelin' it!

J/K bro!
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  #24  
Old 01-06-2006
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Quote:
Originally Posted by Ranger1
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 ?
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).
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