lift question

johnj87 · 10-21-2009, 09:31 PM

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?

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whokrz · 10-21-2009, 09:47 PM

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.

ocdropzone · 10-21-2009, 09:47 PM

'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)

johnj87 · 10-22-2009, 07:11 AM

i have a auto. with the stock 31 inch tire package.i looked on 4crawler and i thought it said that the 31s with auto came with 4.88 gears?

whokrz · 10-23-2009, 04:52 PM

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.

Quote:

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.

Use this method, then you will know for sure what you have.

Quote:

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.

johnj87 · 10-24-2009, 10:20 AM

ok thanks for the help! i found the g144 code so im positive i have 4.88s

10-21-2009, 09:47 PM	#2 (permalink)
whokrz Registered User Join Date: Apr 2009 Location: Suisun City, California Posts: 355	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. __________________ 1990 4runner, 22re, R151, 4.7, 5.29s, E-locker front, Lock-Rite rear, 37" MTRs, 51" rears all around Trail Reviews http://www.gentryoffroad.com Toyota Factory Service Manuals http://ncttora.com/fsm/index.html

10-21-2009, 09:47 PM	#3 (permalink)
ocdropzone Contributing Member Join Date: Oct 2005 Location: PDX, OR Posts: 4,720	'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) __________________ ~Robb '81 Trekker The B4Runner Build TREKKER Forum Mini FAQ/Misc Ideas Thread TRY THESE SEARCH LINKS GOOGLE FOR TOYOTA WEBSITES LINK TO ONLINE FACTORY SERVICE MANUALS Drive a real 1st Gen Wheel Responsibly, Don't Screw It Up for Others

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10-22-2009, 07:11 AM	#4 (permalink)
johnj87 Registered User Join Date: Oct 2009 Posts: 16	i have a auto. with the stock 31 inch tire package.i looked on 4crawler and i thought it said that the 31s with auto came with 4.88 gears?

10-24-2009, 10:20 AM	#6 (permalink)
johnj87 Registered User Join Date: Oct 2009 Posts: 16	ok thanks for the help! i found the g144 code so im positive i have 4.88s