NV3550 conversion
The NV3550 is an excellent option to consider in smallblock Ford V8
(289-302-351 Windsor series motors) Jeep applications. It will
comfortably handle a mild V8 in a vehicle such a as a Jeep, and will
fit under the body in a Jeep with very few additional modifications.
NV4500 Conversion
There is one other popular replacement option for
these Jeeps: The NV4500. This trans is way-oversize for the
application, and requires a body lift or extensive floor pan
modification to fit. The usual incentive for this conversion is to get
the truck style wide ratio, almost granny 1st gear which
can be useful for offroad use. On the other hand, this conversion will
make a your jeep drive more like a truck. If this looks like the
option or you, High impact does have available a package using the NV4500
.
NV3550 / Klune-V Extreme underdrive
Rather than a granny gear 4 or 5 speed, a more
"premium" alternative to achieve extreme gearing would be an
NV3550 combined with a Klune-V
Extreme Underdrive.
NV3550 conversion Details
Conversion Package
High Impact has available a package providing you
with all the primary essential ingredients to this installation. The
NV3550 will fit under the stock body without a body lift. Only
minor floor pan mods are needed where the shifter handle comes up.
Adapting to the Transfer case
NP231 - This is the transfer case
found stock in Jeeps from 1989 - 2000, and most jeeps (except Rubicon)
from 200-up. Some 87-88 Jeeps will have the 231. Units that came with
the 2.5L 4 cyl engine, and units that came behind the Peugeot 5spd
(1987-88) will have 21 spline input gears. If you wish to retain this
transfer case, you will need to replace the input gear with a 23
spline part (Listed below). The remainder of the NP231 Tcases came
with a 23 spline input, and will bolt up directly to a NV3550
transmission
Atlas II Transfer Case - This case is
available in configurations for direct bolt up
Klune-V Extreme
Underdrive - This unit is a premium option where extreme offroad
gearing options are desired. The unit fits between the transmission
and transfer case. Due to the additional length when adding this unit,
there are various issues that must be addressed to ensure proper
driveshaft operation. While all options are not discussed, an article
installing a Klune into a
Wrangler YJ will give an overview. Other options combining a Klune-Atlas
or Klune-Bronco Dana20 make
shorter, no-compromise systems. Please call us if you are considering
such a system and have concerns not covered in the website.
Package:
*NOTE: The prices below are PACKAGE prices:
The prices for the installation kit parts will be 10-20% higher when
purchased separately
Different Packages for both the internal and external slave
versions of his kit are listed below.
(We can also provide custom packages where needed)
| # |
NV3550
into Jeep with Ford smallblock |
Priced
Separately |
Pkg
Price*
$2219.43
|
| 1 |
NV3550 Jeep 5spd 4WD Transmission |
$1,750.00 |
$1,656.50 |
| 1 |
NV3550/ Bronco
Dana 20 adapter kit |
$345.28 |
$345.28 |
| 1 |
Shift
Handle |
$20.59 |
$20.59 |
|
Shift Handle: You
will need to modify this shifter by cutting off the current end,
and welding on a steel plate and drilling holes thru the steel
plate to bolt up to the stub sticking out of the trans. |
|
|
|
Installation kit:
This kit is designed to work with a standard
Ford car/truck-type BH with a 4.848 index dia.. (Listed
below if you do not have one) The
transmission has a different dia input shaft, thus the clutch
disc will need to be changed. It is always recommended to use a
fresh throwout bearing, and it is a good idea to replace the
pressure plate unless you know it is fresh |
|
|
| 1 |
Ford BH adapter
kit, incl new clutch disc (works with a stock Ford bellhousing.
) |
$197.31 |
$197.31 |
|
Adapting
to the transfer case: You will
need to add in the needed adapter components below |
|
|
|
NV3550 to Dana
18/20 adapter |
$345.28 |
$0.00 |
|
NV3550 to Dana
300: The Dana 300 will bolt up, however
the bolt pattern rotation in the NV3550 will likely cause the
D300 to hang excessively low. This can be corrected by using a
gasket as a template and re-drilling the pattern in the adapter
of the NV3550. If preferred a bolt on rotation adapter is
available: |
|
|
|
Option:
Dana 300 Rotation Adapter kit. (3/4" thick) |
$172.65 |
$0.00 |
|
NV3550 to
NP231 - In most cases a Jeep NP231 case
will bolt up directly. The exception: A 231 from behind the
87-88 Peugeot 5sped and a 231 from a 2.5L 4cyl app will have a
21 spline input. This gear will need to be changed to the 23 spl
part. |
|
|
|
(NP231) Tcase
shifter bracket/linkage |
$29.60 |
$0.00 |
|
NP231
input gear, 23 spline, 1987-94 |
$190.00 |
$0.00 |
|
NP231
input gear, 23 spline, 1995-up |
$190.00 |
$0.00 |
|
NV3550 to
NP207 - The NP207 was used in some Jeeps 1987-88. Most will
bolt up directly, however some will have a 21 spl input gear. In
this case, the input gear must be replaced with the 23 spl part. |
$190.00 |
$0.00 |
|
Optional |
|
|
|
Usually the stock
pressure plate and T/O bearing will work. Parts known to work in
this system specified below. These parts should be replaced if
not fresh. |
|
|
|
Throwout bearing |
$36.56 |
|
|
Pressure
Plate |
$164.22 |
|
|
|
|
|
|
Other
Items you may need: |
|
|
|
Flywheel |
$250.00 |
|
|
Dust
shield/engine plate |
$65.00 |
|
|
Ford Bellhousing |
$250.00 |
|
|
Dust Boot |
$8.00 |
|
|
Fork |
$22.00 |
|
|
Master cyl |
$160.00 |
|
|
