NV5600 Installed Into A 1998 12 Valve
 

J. P. Callan


Installation infromation provide to the web by J. P. Callan who has installed the NV5600 in his 1998 12 Valve Ram.

Here's some info on the 6-speed transmission for the Dodge Rams. Some changes are on the wind. I'm planning
a swap-out of the NV4500HD in my 1998 2500 4x4 Quadcab for a 2000 1/2 NV5600 6-speed transmission. I don't
know if you driven a new Dodge with the 6-speed, but let me tell you, it's sweet.

The 1999 1/2 and 2000 0/2 NV5600 6-speed has a 1 1/4" input spline shaft. Starting in January or so, the revised
NV5600 gets a 1 3/8" input spline shaft and a heavier clutch with a 1 3/8" bore.

The new transmission is 5 1/2" longer, so the rear drive shaft must be shortened by 5 1/2" and the front drive
shaft lengthened by the same. While I could by 2000 vintage drive shafts as spare part, it's much cheaper to have a local
driveline shop make the changes and rebalance the existing drive shafts. A new 5 1/2" longer shift linkage rod from the
high/low/4WD range shift lever to the NV241HD transfer case is needed as is a different rear transmission mounting
bracket. Otherwise, that's it for parts.

The 6-speed is installed in my 1998 12-valve 2500 Quad-cab 4x4 and fits like a glove! I used a 2001 NV-5600
instead of a 1999 or 2000 version.

Chrylser and New Venture Gear beefed up the NV-5600 and the clutch for 2001 to better support up-rating the
engine. Research at the Chrylser Proving Ground and using test trucks with uprated engines revealed that the
transmission's input spline shaft sheared off (metal fatigue) after about 150,000 miles of towing their 20,000 lb.test trailer
all around the western USA. So for 2001, the NV-5600 has a 1 3/8" input spline shaft instead the 1 1/4" shaft used in
prior years. I had to replace my fly-wheel and clutch to accommodate the larger spline shaft. The new fly-wheel has an
improved, larger pilot bearing, too. The clutch is 330 mm in diameter instead of the 300 mm version found in the 2000
and prior years. The new clutch can handle much more torque and is quite a bit bigger, using double the number of bolts
to hold it to the fly-wheel.

J. P. Callan Portland, Ore.

Awesome right up. I will definetly be doing this conversion in the future.

Do you know how I can get a hold of J.P. Callan in Portland? I live in Portland and it would be great to get some help with the conversion. But I wanna go from a 47re to a nv5600.

Wow thats pretty cool