lift question
Oct 21, 2009 | 08:31 PM
#1
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lift question
im wanting to do the LC, BJ spacer lift on my 95 4runner. i believe it has 4.88 factory gears with 31s on now. if i go up to 33s would i need to regear to keep the same amount of power? some people say that 5.29s and 33s is a good combo, but will i still have enough power in the mountains, that is my main concern?
Oct 21, 2009 | 08:47 PM
#2
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From: Suisun City, California
Here is a good read http://www.4crawler.com/4x4/4R_TechI...#Differentials
I would guess that you have 4.10 or 4.56 gears. The above link well help you figure out what you have.
I would not bother regearing for 33s, and yes it will take away toque. If you have money to blow then yes 5.29 and 33s are nice.
I would guess that you have 4.10 or 4.56 gears. The above link well help you figure out what you have.
I would not bother regearing for 33s, and yes it will take away toque. If you have money to blow then yes 5.29 and 33s are nice.
Oct 21, 2009 | 08:47 PM
#3
'powerswise' alot of it will depend on auto/manual and which engine you have.
in a heavy vehicle like a 4Runner I would say 5.29's.
you could always try the 33's and see how it is before spending the $1000 or so it will run to do a gear swap (IFS front diff usually more expensive to set up)
in a heavy vehicle like a 4Runner I would say 5.29's.
you could always try the 33's and see how it is before spending the $1000 or so it will run to do a gear swap (IFS front diff usually more expensive to set up)
Oct 23, 2009 | 03:52 PM
#5
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From: Suisun City, California
You may have 4.88. If you do I would not bother gearing to 5.29, it is not that much lower for the cost.
Use this method, then you will know for sure what you have.
Originally Posted by http://www.4crawler.com/4x4/4R_TechInfo.shtml#Differentials
Note that the color codes above are not an absolute way to determine gear ratio, nor is the vehicle's model info/VIN sticker.
Originally Posted by http://www.4crawler.com/4x4/4R_TechInfo.shtml#Differentials
If the differential is still installed inside an axle, then assuming you have open differentials, lift one wheel on the axle in question off the ground. Put the tranny in neutral, transfer case in 2H, e-brake off (if is the rear axle you are testing) and put a chalk mark on the driveshaft and on the tire. Now turn the tire in the air through 2 full revolutions, while counting the revolutions that the driveshaft makes. The number of which will be equal to your gear ratio. You can get a more accurate count by doing 10 or 20 wheel revolutions and dividing the driveshaft turns accordingly.
Why 2 wheel revolutions? Because, the ring gear in an open differential turns at the average speed of the two axle shafts connected to it. Since one is on the ground (and thus not turning) the other axle shaft (i.e. the one you are turning) must turn twice as fast as the ring gear, so 2 revolutions on one axle + 0 revolutions on the other shaft averages out to 1 revolution on the ring gear.
Why 2 wheel revolutions? Because, the ring gear in an open differential turns at the average speed of the two axle shafts connected to it. Since one is on the ground (and thus not turning) the other axle shaft (i.e. the one you are turning) must turn twice as fast as the ring gear, so 2 revolutions on one axle + 0 revolutions on the other shaft averages out to 1 revolution on the ring gear.
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