Does anyone know the stock rear end ratio in an SC300 auto? Also what is the min and max voltage that the 1JZGTE TPS reads??

 

This was posted by ScottURnot & I beleave it is correct.

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
__________________
Later,
Scott M.

I cant say anything about searching as it was in the classifieds - LOL
John

 

thanks! I got the voltages for the TPS, this is going to help out alot also

 

Sorry, I hope someone can explain this to me.. as i know absolutely nothing about ratios/rear ends... Im guessing the lower the ratio the better?

I have an auto SC, and i plan on dropping a 2JZGTE in her, and also doinig a standard w58 swap. Should I also swap out the 5speed rear end? what about drive shaft? Will I be fine/safe using the auto rear diff/shaft? Should I just look for a TT reardiff/shaft?

 

Think of gear ratio's this way.

The lower the # the lower your rpm in top gear @ a specific highway speed.
Just a example:
3.00 = 2,100 rpm
4.00 = 2,800 rpm

In the opposite view, the higher the ratio # the more "pull/ launch" off the line.
But your distance/ mph in 1st gear will be shorter/ lower.

In general for a "swap" if the ratio's are reasonably close you'll be fine unless
you are looking for a "race" set up.

I can't comment on the SC auto rear w/ 5peed trans set up as I have never
driven this combo. Although there are a lot of people here that do run this.
In theory 1st gear may be a little short, & rev a little higher on the highway.

 

Do you know if the differential from a 98-00 SC400 will bolt up to a 1992 SC300 Manual? I think it would be great to lengthen my gears a little bit with a lower rear end ratio.

 

Anyone know? I would love to have a 3.266 differential! It would allow me to put off getting a six speed a little longer and give me a little better gas mileage.