Factory rears for mk3 A70 Supra from lowest to highest:
3.727, 3.909, 4.100, 4.300,
And there is a Turbo A spec rear end of 3.2 which is very very rare! :aigo:
We can go lower until 3.5 which is the limit on our rear 'case'....:naughty:
Jawsgear custom made this 3.5 gear and pinion...
The mk4 rear diff is only good for the V160/V161 Getrag 6 speed manual trans. Otherwise there is no need going that route.:nono:
The twin-turbos mk4 supras that came with the 6 speed getrag... had either a 3.1 or a 3.2 rear (jdm spec only).
So with the 5 speed R154 trans of the mk3 and the mk4 rear (3.1 or 3.2 rear) is useless. Some people even
say that the 3.7 rear is quite tall....figure out. Though I love tall gearing,and the 3.7 is ok with me!
The mk3 rear is an 8 inch diff
The mk4 rear is an 8.5 inch diff for the first years (93.5 - 95 models)...
after 1995 the mk4 had a 8 inch rear diff like the mk3 :biglaugh:
Stock mk3 trans & rear diff can hold up to 600 rwhp with all kinds of abuse
and driving style.And up to 800 rwhp being gentle with 'it' and not doing
1/4 miles on the dragstrip :sarcasm: