swapping 7.5 for 8.8... stick with 3.73 or go 4.10?
#1
swapping 7.5 for 8.8... stick with 3.73 or go 4.10?
I've searched and don't really understand the significance of either.
The junkyard has 2 rangers with a lsd 8.8, one has the 3.73, the other has the 4.10 gearing.
Which should I go with? Currently have a 7.5 with 3.73, one wheel wonder.
My plans are to use the truck 'occasionally' on the highway, mostly commuting to work and around town. I'm going to put on a 3" lift and 31" tires eventually, as well as a locker. Thats the extent of my modding.
The junkyard has 2 rangers with a lsd 8.8, one has the 3.73, the other has the 4.10 gearing.
Which should I go with? Currently have a 7.5 with 3.73, one wheel wonder.
My plans are to use the truck 'occasionally' on the highway, mostly commuting to work and around town. I'm going to put on a 3" lift and 31" tires eventually, as well as a locker. Thats the extent of my modding.
#2
#5
I have the 3.0 and recently changed from 4.10 to 3.73. I felt a little more torquey you could say off the line with the 4.10, but in the end I prefer the feeling of the 3.73s to the off the line movement of the 4.10. Your rpm's with the 4.10 are much higher and gas mileage suffers as a result. I didn't see any decrease in power with the 3.73s, just different times when the power comes in, but then again its the 3.slow and power isn't there to begin with, haha.
#6
Go 4.10 for the pure fact that I read '31's. Which also leads me to thinking that you'll upsize again down the road some. Gas mileage won't suffer too much if any at all, there's the possibility it'll increase....at 80mph with my 4.88's and 35's, i'm pulling about 3100 rpm and get 19-22mpg on the freeway doing so. My setup is geared 4% lower than factory.....rpms are 4% higher than stock at the same speed.
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#8
#9
#10
Overall....it'll be more driveable. And most likely, you'll gain mpg in both city and freeway driving. Those seem like good advantages to me.
Use this calculater....
Gear Calculator
#11
#14
#15
I have pretty close to the same set up. I had stock tires and 3.73's and then moved to 31" tires. You could feel the lose in power and mostly on the highway. I did the explorer axle swap and went with 4.10's and a LSD. The power was incredible. Sooo much different than with the 3.73's. Even so that I still have the axle and the front end has 4.10's now too. Go 4.10's or you'll regret it.
#16
Ok, cool.
I'm really hoping that LSD is going to help this thing out in the snow a little. Today it snowed here, and I put 500lbs in the back, and it still did really badly getting me home from work.
I hate to say that I'm going to have to park the truck and drive the car until the snow is gone, lol.
I'm really hoping that LSD is going to help this thing out in the snow a little. Today it snowed here, and I put 500lbs in the back, and it still did really badly getting me home from work.
I hate to say that I'm going to have to park the truck and drive the car until the snow is gone, lol.
#17
I wouldnt take it off-road, lift it or put big tires on it. 4x2 in the mud is no fun at all man especially if its wet stay with the same gearing and keep it stock. If you wanna off-road then buy a 4x4. Even with bigger mud tires your still gonna say !@#$ when you get stuck lol cuz I know you will unless you drive it on dry grass with no hills or anything, I have an open diff. in the rear and I hate it thank god for the 4x4.
#18
I might have missed it but what motor do you have? Ford’s OHC motors are happier with taller gears. Really will improve the vehicles responsiveness and keep the motor in the right RPM range. My Cadillac has a lot of low end torque so it is happy with 2.71 gears. Its all about finding a happy medium with your combination. That being said in almost any ranger will be better with 4.10’s compared to 3.73’s (not a real big jump but enought to notice)
#20
I have pretty close to the same set up. I had stock tires and 3.73's and then moved to 31" tires. You could feel the lose in power and mostly on the highway. I did the explorer axle swap and went with 4.10's and a LSD. The power was incredible. Sooo much different than with the 3.73's. Even so that I still have the axle and the front end has 4.10's now too. Go 4.10's or you'll regret it.
you thought you had it bad i went from 235s and 3.27s to 3.27s and 31s. i could barely hold 5th gear on the highway. now i have 3.73s and 31s and its much nicer. but i wanted 4.10s couldnt find any. i would go 4.10s tho
#21
I wouldnt take it off-road, lift it or put big tires on it. 4x2 in the mud is no fun at all man especially if its wet stay with the same gearing and keep it stock. If you wanna off-road then buy a 4x4. Even with bigger mud tires your still gonna say !@#$ when you get stuck lol cuz I know you will unless you drive it on dry grass with no hills or anything, I have an open diff. in the rear and I hate it thank god for the 4x4.
#22
Well either way you go on the gearing, having the LS will definitely help a bunch. It did for me on my '86 when I did the V8 conversion. Until I installed a 8.8" 3.73 LS it was useless. Afterword, I put weight in the back and with good tires it does surprisingly well (although obviously not as well as my '07 4x4). My only suggestion would be to check the condition of the LS you intend to get before you buy it. Just because it is LS doesn't mean the clutches aren't worn out. I had to put new discs in my LS before I installed it 'cause I could overcome the clutches too easily (now it's tight and smooth).
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