2000, Jeep began using the NV3550 in Wrangler TJs and Cherokees. It
has become the medium duty 5 speed of choice. It is plenty strong for
a medium size small block V8. All five gears are fully synchronized
and shift very smoothly and easily.
unit is conservatively rated by New Venture Gear at 300 ft/lbs torque
handling capacity. The NV3500, used by GM and Dodge with V8 engines,
is an earlier version of the same transmission.
16.75" Including integral Tcase adapter
Shaft/spline: 1-1/8" 10 spline
pattern, with 9 metric bolts. It shares the same bolt pattern with the
Japanese made AX15 as used in wranglers 1989-1999.
|Length (OAL from Engine to Tcase)
||24 (incl Bellhousing & Tcase adapter)
||300 ft/lbs (conservative)
shaft & spline
Jeep/Dodge have a part number for Lubricant for the NV3550: 4874464
We have been advised, however, by our New Venture rep that a 30 wt non
foaming gear oil is suitable for this transmission, and will be
covered under warranty. It uses about 2.2 qts. NOTE: It is NOT recommended to use ATF in this
style: Square shift stub: Shift handle fits on and is located with a
Style: Round shift stub with a female thread.
is also a type where the stub comes up and is flattened, and has two
holes drilled though it around 3/8 dia. A shift handle is mounted parallel
to this using two thru bolts
Both B&M (available from Summit Racing PN BMM 45048) as well as
Hurst (PN 3910113) make aftermarket short throw shifters. (We do not
light switch wiring:
customer has advised me that wiring pigtails and kits to build
compatible connectors are available from
to Order: (from) LedFoote
Impact offers custom engineered conversion packages. Complete NV3550
installation packages are available for MANY vehicles. These include
needed Bellhousing or adapter, any needed clutch components, transfer
case adapters. Transmissions are custom configured with correct
input/output shaft as is optimum for the application.
The fine print: As for "is it 100%
Bolt-in", yes, all the components should bolt together fine.
However, I would never consider or assume any installation of a
transmission that did not come in the vehicle was going to be 100%
bolt in: 1. Might work out that way. 2. Most cases have a
few issues you will need to figure out on the fly. 3. Occasionally
there is some issue we did not anticipate that turns out to be a
hassle. That is rare. In any event, our customer service is always
available to help you resolve whatever issues may arise in your
Tech Support is generally quite a bit more knowledgeable than the
average Joe you get on the line!
list of Applications:
We have on-line kit descriptions up for these items:
Wrangler 2.5L 4cyl (replacing AX5)
Wrangler 87-88: Peugeot Replacement
Wrangler NV3550 replacing automatic
Wrangler w GM V8
CJ with GM engine and Dana 18 or 20 Tcase
CJ with GM engine and Dana 300 Tcase
CJ with AMC engine
Wrangler w/ Ford V8
Behind Chrysler 5.2 / 5.9L motor