tampa mike

iTrader: (2)

Is there any list of rearends that will bolt into our cars?

I know of all the different supras, but I was wondering what years do the GS300, GS400, SC430, LS400 and so on.

For all of us 3 speed guys looking for taller gears and dont want to pay 900-1000 for an Auto TT unit, is there anything else with a taller gear that can bolt right into our chassis?

Im looking for something in the 3.6 ratio and I hear that sc430s and LS400s had something in that range but wasnt sure if the years were correct.

I have searched and basically found info on the supra stuff and the SC400 3.92 but I still think thats too short for my car


Thanks in advance

ScottURnot

iTrader: (33)

Don't have a complete list of bolt in diffs but........

Here are all the gear ratios for the SC and Supras.


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

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

92-97 SC400
8 cyl (3.92 ratio)

98-00 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

tampa mike

iTrader: (2)

Thanks Scott

I can get a 3.92 SC4 rearend here locally from a regiular salvage yard fairly cheap(sub $200) and I figure its better than my 4.08

Just wanted to see what others were using, Im not worried about the highway so much as it may not see alot but I do need more MPH and a little less immediate wheelspin on the track

v8soarer91

If you are going to use it on the track and you have a TT i suggest looking into an lsd diff.
Pay more now so that you do not have to double dip later on when you are not happy.

If you are set on the sc400 diff. Use the speed sensor off a v8 so that the speedo is correct.

2250rpm @ 100kph

tampa mike

iTrader: (2)

is that RPM@100km from the auto SC400 tranny? I have a 3 speed GM trans, no speedo right now either

99SC42

iTrader: (44)

Hey Mike from 4.08 to 3.92 you will not see that much of a difference i think 3.26 i what you want .GL

ScottURnot

iTrader: (33)

Hey Mike,

For the amount of change you are looking for how about stuffing some 28" tall tires on the rear for the track?

tampa mike

iTrader: (2)

Thats what Dave from boostwerx said too. I had looked into the 255-60-15 mickey thompsom which measures right at 27in. right now i have the 235-60-15 and really the open diff is whats killin me, im sure if both tires were applying power it wouldnt be so bad