CCut

iTrader: (1)

Ok so I bought a built 4l60e and it has vacuum modulation, now heres question: how do you hook up the line and what needs to be done?

TIA
Chris

gen 3 bu

iTrader: (2)

i have never seen a 4l60e with a vacuum port

Ken95Z28

iTrader: (1)

It T's in the Brake Booster Line. The "T" should have came with the vacuum modulator.

Zippinzee

T off of the power brake line and hook your transmission line to it. The vacume modulaton for a 4l60 comes from transgo.

1998TA__1991RS

iTrader: (23)

what does it do

Black02Z71

It controls line pressure based on vacuum, instead of the pcm.

What do you set the pressures to, and how do you set it.

NC00Z28

It is supposed to bypass the electronic pressure controls to give you quicker pressure rise

gen 3 bu

iTrader: (2)

do you have any links and/or more info on this

RevGTO

iTrader: (12)

Search ... there are many threads on this.

Automatics

The EPC solenoid (force motor) has a preset of about 170-180 psi of main line pressure at WOT in the "D" position. When using the Trans-Go modulator, and the Trans-Go main boost valve, and you install the modulator pin "as is" (no grinding), it will put out about 220-235 psi at WOT in the "D" position. This can give you a much longer 3-4 clutch life. It also allows for a much faster downshift than its computer controlled couterpart.