BabyBlue49

right now my truck is sitting on a 1991 3L htp 4x4 rear axle. i am going to do one of 2 things for this swap, either keep that rear axle on and put a 1985 4runner sfa if the gear ratio's match up. or, put put a landcruiser front and back axles.
that brings me to my first question.: what is the gear ratio of a 1991 3L htp 4x4 rear axle compared to a 1985 4runner front axle?
and my second question: can i do the sas with a landcruiser axle? if so what year does it have to be? and will the rear axle fit?

waskillywabbit

iTrader: (-1)

One thread would suffice.

:wabbit2:

85celicagthatchback

85 runner axle with link system jeep wanger front coil springs and Chevy 63 very nice lift and very good flex!!!!!!!

Dreidel

ive been looking up the landcruiser axles to replace mine and was concerned about the offset diff in the rear , some people say it works flawless without modification and others say they had to move the gas tank ( i think the people that "had to" move the tank thought it was going to hit so they did it as a just in case)
you could pick any year landcruiser you just have to decide what length you want iirc the 40 (58in from wms-wms), the 60 has 60in wms-wms i believe, and the 80 has 63 wms-wms and you can get a full floating rear with disk brakes with potential for elockers with the 80 axles
i dont really understand what you mean by "3l htp" assuming the 3l is motor ?
toyota axle came with a range of factory gear ratios. 4.10, 4.30, 4.56, 4.88 im pretty sure were the popular ones. you can either pull the diff out and count the teeth, my 2wd diff had the ratio stamped on the ring gear (which would be convenient if you were going to rebuild the axles before putting them in) or do it the quick and easy way that youll have to look up online.

BabyBlue49

it was my brothers truck, he gave it to me because i've always wanted it. he blew the rear diff one day and thats why i have the other diff in. i had asked my bros friend what diff and gear ratio it was because it came from his old truck but he didnt know. he texted me back with what truck the diff came from so i could look up the gear ratio, its a 3 liter but i dont know what the htp means to be honest,.
and as for figuering out the gear ratio, i'll just have to mark my driveshaft, turn the wheel and count, but i'll have to look that up some more cause i cant remember how many turns is what ratio

rokblok

iTrader: (1)

If you have a locked diff, you lift both tires off the ground, then you turn the driveshaft just barely over 4 times to the tires 1 revolution, that wouldbe 4.10s. Just under, 3.90s. 4 & 1/2 times would be 4.56. Etc....

If you have an open diff, you would double these numbers and divide in half. I think.... An open diff requires double the revolutions because only one tire will turn. I lifted one tire and had to turn my driveshaft about 8.25 times. Which would be 4.10/4.11.

Or you could just count driveshaft turns to a half revolution of the tire....