Correct, the NV3500 and NV5600 both use a 5w30 weight gear oil, not an 80w90 gear oil. In simpler terms use either Pennzoil Syncromesh, Redline MTL (not MT-90), or Amsoil MTF (manual transmission fluid)…these are all “correct” fluids for the NV5600 and the NV3500.

The NV3500 is manufactured for both four-wheel drive and two-wheel drive vehicles. The current NV3500 is found in full size GM trucks from 1988 and newer, S10 trucks from 1990 and newer, and Dodge Dakota V8 Ram trucks from 1994 and newer. The NV3500 is a five-speed manual transmission.

New Venture Gear 3500 transmission

The actual capacity is 2.2 quarts for those who need to know. Once it spills out, insert the fill plug and torque to 15ft/lbs or 20 Nm. You are now done changing the transmission fluid on your NV3500.

NV3500 is light duty and aluminum with the bellhousing made as part of the case. A NV4500 has a much higher load rating, granny 1st gear, cast iron case with bolt on aluminum bell, much larger overall and has PTO ports.

To identify your Chevy, Dodge, GMC, or Ram truck’s New Venture NV4500 transmission assembly number, you need to locate one of the two factory data tags. For trucks that still have the original transmission, you can usually order parts based on the truck year/model/engine.

The New Venture Gear 4500, commonly called NV4500, is a 5-speed manual transmission manufactured by New Venture Gear and used in General Motors and Chrysler products from 1991–2007.

The NV5600 is the workhorse trans that has tighter ratios (ending with the same final drive) than the NV4500. The gap between 3rd and 4th in my 4500 is considerable, so towing lots of weight uphill takes forethought on what gear you wanna be in/what point you need to shift, but nothing crazy.

They are all very similar with the same case and most of the same parts. The 32 spine has a big conkin vibration dampener on the output side but that it is. The 23 spline is the most interchangable with everything else. You can also put a Chevy input shaft into a Dodge NV4500 to get a fairly easy chevy install.

You could change a GM case with early gear ratio into a dodge. But it’d require you to have the input and output shafts changed along with the internal gearsets. The cases are not the same. A GM NV4500 will not bolt to a Dodge bellhousing.

The NV5600 was used in 1998-2005 Dodge 2500 and 3500 Series ¾ ton and 1 ton Trucks with the 5.9L Cummins Engines.

a stock nv5600 with a big input will hold over 500 pretty easly but dont excpect to be doing power shifts or drag racing with it, sled pulling it should last at over 500 no problem but shifting uder power im sure it will bust.

The price for a rebuild will depend on the damage. It’s gonna start around $1500 and go up from there. If it’s running good now, just needing Synchro’s, it’s gonna run around $1500 with a bearing kit, and add around $550-650 for shipping.

Yes it will. You need the engine adapter/ flywheel and clutch for the NV5600 unless it is a small shaft 5600. If its a small shaft you can use the getrag clutch.

It is not. In your NV4500 4th gear is 1.0 to 1.0 ratio. The NV5600 is 1.0 to 1.0 ratio in 5th gear. As has been pointed out three times now, the final gear ratios are almost the same.

As the NV5600 manual transmission has good reliability and is long lasting, is suitable for towing with high horsepower. Common problems generally result from significant usage and defective 6th gear. Losing fluid causes problems for 1st gear and the output bearing.

The single advantage to the NV5600 is the higher OD ratio than the G56 in the pre-emission years. Some say there isn’t enough main shaft supports and the aluminum case flexes too much on the G56 when used hard. The NV5600 is heavy and requires oil changes often, IMO at 20K miles, as it shears it’s oil down.