sti diff/rex tranny

[GhettoscoobGC]

Ok, easy one. Does a rear sti differential (4.44) fit with a rex tranny? This driveline is going into my L, so i'm curious if it will work. And does anyone know what else i'll need for the tranny swap or does it all fit nice and snug? Thanks.

[skyphix]

I am fairly certain the answer is no.

[nicad]

no.  the front diff in a 5spd is 3.90 (for USDM anyway), the rear is a 3.54.  there is a 1.1 stepper in the ass end of the transmission that makes the rear effectively a 3.90

if you run a 4.44 rear, you need a 4.44 front, and it will change if you keep the 1.1 stepper, so calculate accordingly.  otherwise your center diff will scream in pain


or weld up the tranny and RWD and run whatever the fuck rear diff you want.  gas mileage beware