B&M 70365 TRANSPAK - Manual

1
Thank you for choosing B&M, The
performance company with over 40
years experience designing and
manufacturing quality high
performance automotive driveline
components.
Before proceeding with the
installation please read all of the B&M
4L60E Shift Improver Kit installation
instructions so y ou will be familiar
with the series of steps required too
install this kit. We have made every
effort to include more than enough
information to assist any-one with
minimum mechanical experi ence to
install this kit.
The B&M 4L60E Shift Improver
Kit mechanically recalibrates your
transmission to produce firm positive
shifts, this helps reduce clutch pack
heat build up and improves
transmission durability. This kit does
not change or modify shift point RPM
in any range. All transmission shift
point RPM and pressure control
functions remain under full PCM
(Powertrain Control Module) control
as they were originally.
No recalibration kit can fix an
already ailing transmission. If your
4L60E is slipping, overheating,
Installation Instructions
Transpak
1991-2001 GM 4L60E
Part Number 70365
(see www.bmracing.com for the latest application and fitment information)
©2006, 2002 B&M Racing and Performance Products
9500582-03
Printed in U.S.A,
shifting irregularly or making noise,
you should have it repaired before or,
in conjunc-tion with the installation of
your B&M 4L60E Shift Improver Kit.
General 4L60E Information
B&M’s 4L60E Shift Improver Kit was
designed to provide firm positive shift
quality and improve transmission
du-rability in original vehicle
installations and those with moderate
engine power improvements. This kit
was not de-signed for and is not
suitable for all out racing applications.
Your 4L60E Transmission is
controlled by the (PCM) which has
full control of the 4L60E’s operation.
All of the param-eters that control
fluid pressures, shift point RPM and
TCC (Torque Converter Clutch)
Iockup speed have been
preprogramed into the PCM at the
fac-tory. We
have designed this kit as an easy
way to overcome the less desir-able
features of the factory calibrated
imperceptible shifts. With this kit you
can set the shifting characteristics of
your 4L60E to one of two levels of
per-formance, Heavy Duty or Street.
Heavy Duty level produces a solid,
noticeably firm shift when compared
to the stock shift feel. While Street
level produces a slightly quicker and
more ag-gressive shift compared to
Heavy Duty level. After installing the
B&M Shift Im-prover Kit the actual
shift feel you get will depend on the
factory PCM calibration, Automatic
Transmission Fluid (ATF)
temperature and the type of ATF you
have used. As ATF temperature
increases it becomes thinner (less
viscous) which allows the fluid to flow
faster through small orifices thereby
producing faster shift rates. In
addition to the effects of temperature,
each type of ATF (B&M Synthetic
Trick Shift, Dexron III, Mercon etc.)
has a specific characteristic friction
property. This characteristic friction
property is one of the variables that
determines shift feel and clutch torque
capacity. Dexron/Mercon type ATF’s
were formulated to produce smooth
imperceptible shifts. Both Mercon/
Dexcron III and B&M Synthetic
Trick Shift ATF’s are suitable for use
in your 4L60E transmission. For
Maximum performance and positive
shift feel we recommend B&M
Synthetic Trick Shift ATF.
PLEASE READ INSTRUCTIONS BEFORE
SETTING UP TO INSTALL KIT