B&M 20260 SHIFT IMPROVER KIT - Manual

9500019-11
Printed in the U.S.A.
IMPORTANT NOTICE: Hydra-
Matic introduced a revised transmis-
sion case just after the beginning of the
1988 model year. If you are installing
the B&M TH-400 Shift Improver Kit in
a late model vehicle which has had the
transmission replaced after 1988 you
must check the Julian date stamped on
the transmissions I.D. tag (See Fig. 1)
before attempting to install this kit. Do
not use this kit (#20260) in transmis-
sions built on or after November 23,
1987 (Julian date 327), use instead our
#20261 Shift Improver Kit which is
designed to be used with the new style
case. If the I.D. tag is unreadable or
missing you will have to remove the oil
pan and valve body from the transmis-
sion to determine if your transmission
has an early or late style case (See
Fig. 2). This kit (#20260) will work
correctly in all 1965 through 1987 TH-
400 transmissions.
We recommend that you read
through the instructions completely
before beginning the installation so
you can familiarize yourself with
the installation procedure and tools
required.
Check the tool list at the end of
these instructions for the tools re-
quired to install your B&M TH-400
Shift Improver Kit.
Installation of the B&M TH-400 Shift
Improver Kit can be accomplished by
anyone with minimum mechanical ex-
perience. It is however, important to
closely follow the instructions. Read
each step carefully before proceeding,
if you do not understand, go back and
read the step again.
NOTICE: The B&M TH-400 Shift Im-
prover Kit is not a cure-all for an ailing
transmission. If your transmission is
slipping, chatters or is in poor general
shape, the installation of this Transpak
may worsen the condition. However on
a properly operating transmission in
average condition, the B&M TH-400
Shift Improver Kit will provide the kind
of transmission performance you are
looking for.
When installing your B&M TH-400
Shift Improver Kit there are several
other B&M performance products you
may wish to consider:
TRANSMISSION OIL COOLER We
feel that it is very important that every
vehicle used in heavy duty and hi per-
formance applications (racing, towing,
RV, etc.) should have an oil cooler.
Heat is the major cause of transmis-
sion failures, and an oil cooler is an
inexpensive safeguard against overheat-
ing and transmission failure. B&M of-
fers a wide variety of transmission cool-
ers to suit every application.
TRICK SHIFT PERFORMANCE ATF
#80259 Trick Shift performance auto-
matic transmission fluid is the indus-
try’s only real performance ATF. A
specially blended oil with foam inhib-
itors, extreme pressure agents and
shift improvers, this fluid assures pro-
tection while delivering the fastest pos-
sible shifts. You literally “Pour in per-
formance.”
DRAIN PLUG KIT #80250 The TH-400
transmission is not factory equipped
with a drain plug. The B&M Drain plug
kit is inexpensive and easy to install. It
eliminates the mess of pan removal and
gasket replacement normally required
when changing fluid.
DEEP PAN #20289 B&M offers deep
pans for the TH-400 transmission that
provide 3 to 4 quarts additional oil ca-
pacity which significantly contributes
to the cooling ability of the oil. No
modifications to the dip stick are nec-
essary and a fluid pickup extension is
provided.
TORQUE CONVERTERS B&M offers
a wide range of street torque convert-
ers for the TH-400 transmission. See
your B&M dealer for details of the
correct torque converter for your ve-
hicle.
ADJUSTABLE VACUUM MODULATOR
I
nstallation Instructions
Shift Improver Kit
1965-1987 Turbo Hydra-Matic 400
TH-400/TH-475 (3L80/3L80-HD)
Part Number 20260
© 2000, 2001 by B&M Racing & Performance Products