I did search but everything seems conflicting so does anybody know for sure the ratios?

I ask because I feel like my sc400 gearing is a bit sluggish and if I remember properly the auto sc300 had a 4.27 vs the 3.xx that is in the car now so I am just looking to wake it up a bit in the 1/4 mile and 0-60.

 

Found this but I honestly think some of the info is wrong.

92-97 SC300
6 cyl, AT (4.27 ratio)
6 cyl, MT (4.08 ratio)

98-00 SC300
6 cyl, AT (4.27 ratio)

92-96 SC400
8 cyl (3.92 ratio)

97-00 SC400
8 cyl (3.266 ratio)

92-96 MKIV Supra

w/o turbo; (4.27 ratio) Limited Slip
w/o turbo; (4.27 ratio)
w/turbo, MT (3.133 ratio) Limited Slip
w/turbo, AT (3.769 ratio) Limited Slip

97-98 MKIV Supra
w/o turbo; (4.08 ratio) Limited Slip
w/o turbo; (4.08 ratio)
w/turbo, MT (3.133 ratio) Limited Slip
w/turbo, AT (3.769 ratio)
w/turbo, AT (3.769 ratio) Limited Slip

all taken from clubna-t

 

100% accurate.

 

from what ive read, the gearing will be better but gas mileage will be worst

I plan on pulling a diff off an auto sc300 in a junkyard and see if its any better

 

good info for the track

 

97-00 SC400 VVTI
8 cyl (3.266 ratio)

 

No limited slip though right?

 

So what is faster accel? lower or higher numbers? and what ones are posi trac?

 

The higher the number, the faster the acceleration from a dead standstill.

 

And none of them are lsd.

 

I am putting the 3.26 ratio into a lsd. Will go with my w58 swap in my SC400. Let everyone know how it works out.

 

according to what I read the higher the number the faster the acceleration but the crappier the gas mileage. You sacrifice top speed for acceleration. In other words the speed you have at 2500 RPM is lower with a 4.27 than a 3.76 since you would need 4.27 turns of the shaft to equal 1 turn of the wheel vs 3.76 for every turn.

 

Thanks xspsi6, I have been looking for this.

Much appreciated!

 

97 is not VVTi

98-2000 are VVTi

97 SC400 is 3.92

 

Hello ...my son has a auto 1998 SC 300 with the 4.27 ...can I use a rear diff from an earlier year - like '94 thru '97?